325 Matching Annotations
  1. Oct 2021
    1. "The story of the American college is largely the story of the rise of the slave economy in the Atlantic world," says Craig Steven Wilder, a historian at MIT and author of "Ebony and Ivy: Race, Slavery, and the Troubled History of America's Universities."

      In this way, the past seeps into the present. This is a literal example of the legacy of structural inequality.

    2. At the University of Virginia — founded and designed by Thomas Jefferson — slaves cooked and cleaned for the sons of the Southern gentry.

      As a species, as we progress ethically to more inclusive social norms, those considered the enlightened leaders of their time, like Jefferson can be seen from two contrasting perspectives, the norms of their time and the norms of our times.

      As we judge others in the past for failures to recognize unjust social norms prevalent in their time, so too will we be judged by our descendants for social norms they will recognize as unjust, but which we collectively haven’t yet.

      How long it takes to shake off the shackles that prevent the recognition of the dignity of each and every human INTERbeing. Each living person of modernity owes his or her existence to all our ancestors, whose social dynamics, for better or worse, shaped the world we inhabit today.

      As we evolve, we are engaged in a constant cultural evolutionary process, as we incrementally recognize unjust social norms and attempt to stop their further indulgence, reset our behavior and go towards new, more just ones.

    1. It was a general‑purpose tool designed to help knowledge workers perform better and faster, and that was a controversial idea. Letting nonengineers interact directly with a computer was seen as harebrained, utopian—subversive, even.

      A revolutionary idea.

    2. The mother of all demos

    1. Crowdpol is a pro-social platform, where changemakers from across the globe can work together to tackle the challenges of the century.

      Shared by Ferial Puren

    1. Annotate the web, with anyone, anywhere.

      Gyuri Lajos recommended Hypothesis to the Stop Reset Go team to simulate the experience of using the IndyWiki project that he is working on.

    1. IndyWiki

      Bootstrap self-organizing writing communities with IndyWiki, the simplest possible constellation of "web native" P2P capabilities to facilitate deep conversation, mutual learning, and co-authorship. Every author has their own personal wiki, which is shareable either publicly or privately and collaborative within trusted peer networks, who write and learn together on their own(ed) networks.

    2. Gyuri Lajos is a member of the Stop Reset Go team. He is working on IndyWiki as a Web3 Native platform for collective intelligence.

  2. Sep 2021
    1. Presentations that have a 3-act story structure, and they place the audience at the center as the hero, regularly change minds, spread ideas, and even start movements.

      Designing Presentation Slides that Pass the Glance Test

      • Each slide should communicate a single idea
      • Speak to your audiences’ needs, concerns, and fears
      • Design simple slides with a consistent visual style
      • Arrange and layout your slides with care
    1. Derick Bedzra presented the eight forms of capital during one of our meetings with the Stop Reset Go team.

    1. I connected with Gien Wong through a meeting about the Infinity Project through the work of Rūta Danyte in the Design Science Studio. The next morning, the Stop Reset Go team had their first meeting.

    1. “I think that everybody knows that we are in this incredible inflection point for humanity. And I think that what we don’t appreciate enough is that artists are the angel investors in the future that we want. They just have a different form of capital.”

      — Amanda Joy Ravenhill, Executive Director, Buckminster Fuller Institute

      (3:10:40)

      This quote connects to the Stop Reset Go meeting where Derick Bedzra walked us through the eight forms of capital.

    1. For the Stop Reset Go project, we are exploring how we achieve a group flow state that can connect us in an experience of deep humanity as we engage in a process of human inner transformation and social outer transformation. The goal of the project is bottom-up whole system change.

      The concept of a builders collective is to document what people are already doing to build a world that works for 100% of life.

    1. 71,660,160

      The topic of education is something that I have been exploring, going so far as to suggest that we can address the challenge of education through technology. This is something that Bobbi Kyle was exploring in her studies at Emily Carr University of Art + Design (ECUAD) and at the University of British Columbia (UBC).

      Stop Reset Go team member, Ferial Puren, mentioned that we have some ideas worth spreading, suggesting that we should develop a presentation for a TED talk.

    1. I think Marshall McLuhan knew it all. I really do. Not exactly what it would look like, but his view and Postman’s view that we are creating a digital global nervous system is a way they put it, it was exactly right. A nervous system, it was such the exact right metaphor. And he didn’t — it’s not that they saw it exactly, but I really love those mid-century media critics because they saw something happening clearer than we see it now. And it is a nervous system. I’m a huge Marshall McLuhan stan.

      We are creating physical infrastructure to scale, enhance, and amplify human capabilities to extend our reach beyond the constraints of time and space.

    1. We are all designers

      A design brief for a project to reimagine our social architecture. The Design Science Studio is the new Bauhaus, the community, the builders collective who are building a world that works for 100% of life. The Stop Reset Go is the project that is exploring how we imagine, design, and build the kind of world that we want to live in. How do we empower humanity to be the designers who can engage in a process of bottom-up whole system change?

    1. Stop Reset Go

      How do we engage in bottom-up whole system change? Perhaps we need a model for understanding who we are serving that transcends the bias and limitations of personas as they are used in user experience design (UX).

      What is a more holistic model for understanding human perceptions, motivations, and behaviours?

    1. The book, This is Service Design Doing, includes journey maps as a method for participatory design and co-creation workshops.

      I suggested to the Stop Reset Go team that we should map out the interactions and touch points to engage people with the process of bottom-up whole system change.

    1. Sandy Hinden is a member of the core team for the Stop Reset Go project.

    1. Leanne Betasamosake Simpson writes of all her relations with living beings, the land, and the water. She explores the disconnection that results from the building of lift locks, canals, and hydro dams in her stories of Nogojiwanong in her book, Islands of Decolonial Love.

      In our recent Stop Reset Go meeting, we discussed the goal of connection. Leanne Simpson has much to say about connection in her collection of stories.

    1. To be trauma-informed, it is essential to know what lies at the root of depression and anxiety: a lack of connection.

      In our Stop Reset Go meeting on Tuesday, Ferial Puren focused on the goal of connection. “We can leverage our technological advancements to scale our natural human technology of communication, collaboration and connection.”

    1. In our second meeting as a team, I introduced the idea of inviting people into a story where they were protagonists in an adventure. I proposed that this could be a way to include everyone in the process of imagining the kind of world that we might want to live in.

      Mythopoeia

      This is a writing prompt or design brief for building a world that we want to live in. You can find the original article on Medium.

    1. This is the second meeting of the STOP-RESET-GO Group, for November 1, 2021, the first day of COP26, to help transform Earth and humanity to be a thriving, sustainable planet based on wellness and wisdom.

      At around 1:46:00 I talk about a shift in mindset from competition to cooperation. I introduce the idea of storytelling as a prototype of the future and the Mythopoeia project.

    1. This is the other huge important theme, which is that technology alone does not lead to a better world. It can only lead to a better world in the context of good moral and social systems. One thing that I do deeply believe is that our scientific and material technology has raced ahead of our moral and social technology. We need some catch-up growth in moral and social technology.

      There is another even greater theme this article has not touched on, progress traps. Climate change is a direct result of the unintended consequences of progress, a pretty major impact.

    1. Asimov, for the uninitiated, is one of the most important figures in science fiction and is often regarded as one of the “big three” authors, along with Robert A Heinlein and Arthur C Clarke. Together they helped bring about the so-called “golden age” of science fiction in the mid-20th century.

      About Isaac Asimov. He is credited with helping bring about the “golden age” of science fiction in the mid-20th century.

    1. There is nothing wrong with your television set. Do not attempt to adjust the picture. We are controlling transmission. If we wish to make it louder, we will bring up the volume. If we wish to make it softer, we will tune it to a whisper. We will control the horizontal. We will control the vertical. We can roll the image; make it flutter. We can change the focus to a soft blur or sharpen it to crystal clarity. For the next hour, sit quietly and we will control all that you see and hear. We repeat: there is nothing wrong with your television set. You are about to participate in a great adventure. You are about to experience the awe and mystery which reaches from the inner mind to the outer limits.

      Entering Gien’s mind.

    1. A consequent period of barbarism will last for 30,000 years unless Seldon's plan, which involves setting up a Foundation to act as a repository of crucial, civilisation-preserving knowledge, is embraced. In that case, the Dark Ages might last a mere 1,000 years and the Foundation can build back better.

      The foundation is the necessary knowledge to be preserved to rebuild civilization after an apocalypse.

      What if we thought about the foundation of human experience to avoid the apocalypse? Stop Reset Go

    1. reshape the world into the one we wish to live in

      How do we engage people in an immersive story? Can we relate what we are doing with the sort of storytelling that Apple TV+ is exploring with Foundation? A computer company draws inspiration from science fiction to create a world where math nerds and creative outsiders can be empowered to change the world. Apple becomes the largest corporation in the world, then they focus on media and storytelling that is about the power of science, technology, engineering, math, art, and creativity to change the world. https://hypothes.is/a/fsveDCBiEey6SwubLsgSJA

    2. We are a growing collective of change agents

      Storytelling as a Prototype of the Future

      In our second meeting as a team, I introduced the idea of inviting people into a story where they were protagonists in an adventure. I proposed that this could be a way to include everyone in the process of imagining the kind of world that we might want to live in.

    1. Fully embracing the principles of ecology could revolutionize every aspect of design, in substance and in style.

      Visions of Earth

      On Christmas Eve 1968, Bill Anders looked out his window and saw something no one had ever seen before. Against a pitch-black sky, framed by a bone-dead, mottled-gray landscape, hovered a hazy half-dome of swirling white and brilliant blue, the only bit of color anywhere in sight. It was a stark scene, a solitary figure floating in “a vast lonely expanse of nothing,” as one of his two companions described it, yet it overwhelmed them all with emotion, a kind of awe perhaps previously unfelt by anyone in history. “It was the most beautiful, heart-catching sight of my life,” one later recalled. Anders did what every sightseer does—he took a photograph. That quick snapshot became, in the words of biophysicist John Platt, “one of the most powerful images in the minds of men today.”

      The crew of Apollo 8—Anders, Frank Borman, and Jim Lovell—not only were the first people ever to leave orbit and the first to see the dark side of the moon but also were the first to witness Earth intact, not as a fragmentary arc of horizon but as a complete being, an entire world. “We came all this way to the Moon,” Anders later recalled, “and yet the most significant thing we’re seeing is our own home planet.”

      Page 167-168

      Overview effect

    1. 45.8 percent of global household wealth is in the hands of just 1.1 percent of the world's population. Those 56 million individuals control a mind-boggling $191.6 trillion, as can be seen on the following pyramid.Below that, 583 million people own $163.9 trillion, 39.1 percent of global wealth, despite accounting for just 11.1 percent of the adult population. The base of the pyramid is the most poignant and it shows how 2.9 billion people (55 percent of the world's population) share a combined wealth of $5.5 trillion which is just 1.3 percent of total wealth.

      combine this with Oxfam's 2020 report on carbon emissions and we have the real driver's of carbon emissions, the wealthy. COP26 addresses nation states, not individuals. We need to focus on individuals as well.

    1. Global air traffic is expected to double to 8.2 billion passengers in 2037, according to IATA, which predicts that aviation's 2019 emissions peak of around 900 million metric tons of CO2 will be exceeded within the next two to three years.At the same time, the window to cut the world's reliance on fossil fuels and avoid catastrophic changes to the climate is closing rapidly. The International Energy Agency forecasts that aviation's share of global carbon emissions will increase to 3.5% by 2030 from just over 2.5% in 2019 in the absence of efforts to further decarbonize.

      SRG education campaign for air travellers ( mostly middle class and rich) to do their part and minimize air travel until the breakthrough technologies are here. Temporary abstinence or voluntary lotto system.

  3. Jun 2021
    1. "Many North American music education programs exclude in vast numbers students who do not embody Euroamerican ideals. One way to begin making music education programs more socially just is to make them more inclusive. For that to happen, we need to develop programs that actively take the standpoint of the least advantaged, and work toward a common good that seeks to undermine hierarchies of advantage and disadvantage. And that, inturn, requires the ability to discuss race directly and meaningfully. Such discussions afford valuable opportunities to confront and evaluate the practical consequences of our actions as music educators. It is only through such conversations, Connell argues, that we come to understand “the real relationships and processes that generate advantage and disadvantage”(p. 125). Unfortunately, these are also conversations many white educators find uncomfortable and prefer to avoid."

    1. Oversharing. Crying, disclosing intimate details, and telling long (unrelated and/or unsolicited) stories about one’s personal life may indicate the lack of an essential social work skill: personal boundaries.

      Testing out the annotate feature. Student 1 will highlight sections according to the prompts, as shown HERE.

      For example: "This is me during interviews. I say too much and veer off topic."

    1. I've seen (and fixed) Ruby code that needed to be refactored for the client objects to use the accessor rather than the underlying mechanism, even though instance variables aren't directly visible. The underlying mechanism isn't always an instance variable - it can be delegations to or manipulations of a class you're hiding behind a facade, or a session store with a particular format, or all kinds. And it can change. 'Self-encapsulation' can help if you need to swap a technology, a library, an object specification, etc.
    2. a principle I use is: If you have an accessor, use the accessor rather than the raw variable or mechanism it's hiding. The raw variable is the implementation, the accessor is the interface. Should I ignore the interface because I'm internal to the instance? I wouldn't if it was an attr_accessor.
    3. I have been wrapping instance variables in accessor methods whenever I can though.
    4. Also, Sandi Metz mentions this in POODR. As I recall, she also advocates wrapping bare instance variables in methods, even when they're only used internally. It helps avoid mad refactoring later.
  4. Apr 2021
  5. Mar 2021
    1. Beykat yi duñu dem tool altine.

      Les cultivateurs ne vont pas au champ le lundi.

      beykat bi -- farmer 👩🏾‍🌾 (from bey -- to farm/cultivate).

      yi -- the (indicates plurality).

      duñu -- do not/no one (?).

      dem v. -- to go, leave, etc.

      tool bi -- field, orchard.

      altine ji -- (Arabic) Monday.

  6. Feb 2021
    1. Things could go wrong in two places here. First, the validation could fail if Github sends us data we don’t understand. Second, we might not know the user signing in, meaning the “find user” logic has to error-out
    1. In the classroom, I delegate responsibilities to my students at a rate that astounds people. There is almost nothing that I will not allow my students to do, including teaching my lessons whenever possible. My students take full and complete ownership of the classroom, whether they like it or not, and as a result, they possess great ownership of their learning.
    2. They fail to understand the importance of autonomy when delegating responsibilities.
    3. They lack faith in the capacity of others.
  7. Jan 2021
    1. We recommend the Alpine image as it is tightly controlled and small in size (currently under 5 MB), while still being a full Linux distribution. This is fine advice for Go, but bad advice for Python, leading to slower builds, larger images, and obscure bugs.

      Alipne Linux isn't the most convenient OS for Python, but fine for Go

  8. Dec 2020
    1. Go is introducing publicly-visible API changes related to these issues in an upcoming major release, which risks making the vulnerabilities public without explicit public disclosure. 

      Whaaat ?!

  9. Nov 2020
    1. But what if you want a runtime with some features? what if you want, say, a runtime with very powerful coroutine support? The answer is: you write Go.
    1. In the past, I tried to create some proof of concepts with svelte, but I usually ended up missing some of the features that RxJS provides. Now that I know that they complement each other well, I will grab this combination more often
  10. Oct 2020
    1. Then at some moment I just stumbled upon limitations and inexpressiveness of templates and started to use JSX everywhere — and because JSX was not a typical thing for Vue I switched to React over time. I don’t want to make a step back.
  11. Sep 2020
    1. But if you’ve spent time building front ends with components, it’s hard to go back. Svelte lets us do that with a minimum of fuss or code bloat.
    1. El matrimonio igualitario Argentina, Uruguay, México, Brasil y Colombia son los únicos países de América Latina que han legalizado el matrimonio de parejas homosexuales, con todas las condiciones legales que tienen los matrimonios convencionales. De igual manera, Holanda, Bélgica, Suecia, Alemania, Sudáfrica, España, Inglaterra, Portugal y otras 12 naciones más han hecho lo propio.   Entretanto, sólo 11 países permiten la unión civil entre parejas del mismo sexo (no incluye todos los derechos legítimos maritales) entre estos Ecuador, Chile, Austria, Italia y Grecia. Cambio de identidad El proceso de cambio de género o sexo es un proceso quirúrgico y psicológico que contempla el cambio físico. En la actualidad, naciones como Venezuela, Colombia, Uruguay, Bolivia y Perú permiten que la transformación también sea legal, con el cambio del nombre y género en los documentos de identidad de las personas LGBTI. Sin embargo, en Brasil y Argentina, este tipo de decretos han sido desaprobados o son procesos difíciles por lo riguroso de los exámenes y requisitos que truncan el derecho al trámite. Igualdad en derechos patrimoniales Las garantías, protecciones legales en los matrimonios tras el fallecimiento y divorcio también son logros alcanzados en menos de 20 años por la comunidad LGBTI. Pero estos aún están condicionados dependiendo del país, por la diferencia entre permitir la unión civil (algunos derechos de cónyuges) o el matrimonio igualitario (derechos legítimos).   Adopción homoparental Uruguay, México, Canadá (el primer país en permitirlo en 1999) y algunos estados de EE.UU. han legalizado la adopción para personas unidas del mismo sexo. Asimismo, España, Holanda, Francia y otros permiten que las parejas no heterosexuales puedan tener hijos por medio de la adopción legal. Protección a víctimas de discriminación Hasta 1948 la homosexualidad era considerada una enfermedad mental, pero esto cambió lo que permitió la apertura de sistemas de protección a víctimas de discriminación y agresión. En la actualidad, existen programas de atención social y judicial para el seguimiento de los casos de hostigamiento y asesinatos contra los homosexuales. Además hay coberturas de salud gratuitas para tratar enfermedades como el sida y la programas de integración laboral en distintas áreas. Tags Día contra la Homofobia LGBTI Derechos Discriminación BBC - La Vanguardia - El Excelsior - La Semana Por: teleSUR- db - SB - JCM Noticias Relacionadas OLP exhorta a Oriente Medio a tomar medidas contra Guatemala Bolivia afirma que Venezuela frena dominación de EE.UU. 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  12. Aug 2020
    1. Course as community onboarding

      I like this idea - as when joining a community figuring out the 'rules of engagement' can be hard, and also

      • who to go for what
      • what do I need to know to start
      • how does this community work

      For team on-boarding, project on-boarding, etc - it can also guide people towards other courses / resources that may be more ongoing or of other types

  13. Jul 2020
    1. Go cheatsheet

      Super useful cheatsheet for the Go programming language.

  14. Jun 2020
  15. May 2020
    1. Programming languages These will probably expose my ignorance pretty nicely.

      When to use different programming languages (advice from an Amazon employee):

      • Java - enterprise applications
      • C# - Microsoft's spin on Java (useful in the Microsoft's ecosystem)
      • Ruby - when speed is more important then legibility or debugging
      • Python - same as Ruby but also for ML/AI (don't forget to use type hinting to make life a little saner)
      • Go/Rust - fresh web service where latency and performance were more important than community/library support
      • Haskell/Erlang - for very elegant/mathematical functional approach without a lot of business logic
      • Clojure - in situation when you love Lisp (?)
      • Kotlin/Scala - languages compiling to JVM bytecode (preferable over Clojure). Kotlin works with Java and has great IntelliJ support
      • C - classes of applications (operating systems, language design, low-level programming and hardware)
      • C++ - robotics, video games and high frequency trading where the performance gains from no garbage collection make it preferable to Java
      • PHP/Hack - testing server changes without rebuilding. PHP is banned at Amazon due to security reasons, but its successor, Hack, runs a lot of Facebook and Slack's backends
  16. Mar 2020
    1. It won't let me go beyond this page. I'm sure I've answered the CAPTCHA correctly at least some of the 10+ times I've tried. What's going on?

      I can't even access their static website to find contact information for how to contact them about this problem!

  17. Feb 2020
    1. k6 does not run in Node.js because it would perform poorly while running larger tests.Javascript is not generally well suited for high performance. It's a Go program - to achieve maximum performance - embedding a JavaScript runtime for running tests written in JavaScript.
  18. May 2019
  19. Mar 2019
  20. Feb 2019
    1. Exploring the usage of the CASE software through various research and development funded initiatives, is an on‐going process with the results informing the development process of the system. Future directions in the context of CASE software design include: automatic “mind‐map” diagrams; user defined highlighting and layout preferences; user special‐interest groups; automated and peer‐reviewed scoring of annotations for display; automated abuse filtering; intelligent grouping of learners; and middleware applications to support improved integration with on‐line learning environments.
    1. seems

      Look at the seed he is sowing right there.

    2. our scholars arc nol compelled to restrict their competence to the knowledge of one or another author, but can master a multiple, diversified, almost boundless domain of culture.

      As an autodidact, he would know!

  21. Nov 2018
    1. Cobra既是一个用来创建强大的现代CLI命令行的golang库,也是一个生成程序应用和命令行文件的程序。下面是Cobra使用的一个演示:
    1. 在计算机科学领域,反射是指一类应用,它们能够自描述和自控制。也就是说,这类应用通过采用某种机制来实现对自己行为的描述(self-representation)和监测(examination),并能根据自身行为的状态和结果,调整或修改应用所描述行为的状态和相关的语义
  22. Oct 2018
    1. Channels by default are blocking on sending and receiving values, so they will be waited on

      默认情况下,通道在发送和接收值时会阻塞,因此它们将被等待。

    1. Finally, we add the `xml:"sitemap"` syntax at the end for the parser to understand where it's looking when we go to unpack this with the encoding/xml package.

      最后,我们在末尾添加`xml:“sitemap”`语法,以便解析器在我们使用encoding / xml包解压缩它时的位置。

      type Sitemapindex struct {
          Locations []Location `xml:"sitemap"`
      }
      
    1. Personally, I would test both. If the gains are insignificant by using value receivers where possible and you are using pointer receivers, sure, use all pointer receivers. If you can make sizeable gains by using value receivers where possible, however, I would personally use them.

      就个人而言,我会测试两者。

      如果在可能的情况下使用值接收器并且您正在使用指针接收器,则增益无关紧要,请确保使用所有指针接收器。

      如果使用值接收器获取的收益微不足道,那么在可能的情况下,使用指针接收器,当然,所有地方都使用指针接收器

      但是,如果使用值接收器可以获得可观的收益,那么在可能的情况下,会亲自使用它们

    2. Now, we're modifying the struct itself via pointer. Now in the code we could do something like a_car.new_top_speed(500), and this would actually modify the object itself.

      现在,我们通过指针修改结构本身。现在在代码中我们可以做类似a_car.new_top_speed(500)的事情,这实际上会修改对象本身

    1. between the func keyword and the name of the function, we pass the variable and type. We use c, short for car, and then car, which is in association with the car struct. In this case, the method gets a copy of the object, so you cannot actually modify it here, you can only take actions or do something like coming up with a calculation

      func关键字和方法名之间,我们传递了变量和类型,

      我们使用c,汽车的简称,然后汽车,这是与汽车结构相关联。这样就把struct和method关联了起来

      在这种情况下,该方法获取对象的副本,因此您无法在此实际修改它,您只能执行操作或执行类似计算的操作 通过把struct和method关联了起来,使得方法获取到了对象的副本

      func (c car) kmh() float64 {
          return float64(c.gas_pedal) * (c.top_speed_kmh/usixteenbitmax)
      }
      
    2. In order to do this, we don't need to actually modify the a_car variable, so we can use a method on a value, called a value receiver:

      我们想把gas_pedal的值转化成某种实际的速度,为了做到这一点,我们不需要实际修改a_car变量,所以我们可以在值上使用一个方法,称为值 接收器

      func (c car) kmh() float64 {
          return float64(c.gas_pedal) * (c.top_speed_kmh/usixteenbitmax)
      }
      
    3. Methods that just access values are called value receivers and methods that can modify information are pointer receivers.

      只访问值的方法称为值接收器,只有获取值的需求时,用值接收器

      可以修改信息的方法是指针接收器,需要修改struct信息时,用指针接收器

    1. 可以使用内建函数 make 也可以使用 map 关键字来定义 Map:
      // 声明变量,默认 map 是 nil
      var map_variable map[key_data_type]value_data_type
      
      // 使用make 函数
      map_variable := make(map[key_data_type]value_data_type)
      
    1. /* 打印子切片从索引 0(包含) 到索引 2(不包含) */ number2 := numbers[:2] printSlice(number2) /* 打印子切片从索引 2(包含) 到索引 5(不包含) */ number3 := numbers[2:5] printSlice(number3)
      numbers := []int{0,1,2,3,4,5,6,7,8}
      

      len=2 cap=9 slice=[0 1]

      len=3 cap=7 slice=[2 3 4]

    2. 通过内置函数make()初始化切片s,[]int 标识为其元素类型为int的切片
      s := make([]int, len, cap)
      
    3. 初始化切片s,是数组arr的引用
      s := arr[:]
      
    1. /* 未定义长度的数组只能传给不限制数组长度的函数 */ setArray(array) /* 定义了长度的数组只能传给限制了相同数组长度的函数 */ var array2 = [5]int{1, 2, 3, 4, 5}
      func setArray(params []int) {
          fmt.Println("params array length of setArray is : ", len(params))
      }
      
      func setArray2(params [5]int) {
          fmt.Println("params array length of setArray2 is : ", len(params))
      }
      
    1. 注意:以上代码中倒数第二行的 } 必须要有逗号,因为最后一行的 } 不能单独一行,也可以写成这样:
      a = [3][4]int {
          {0, 1, 2, 3} ,
          {4, 5, 6, 7} ,
          {8, 9, 10, 11} ,    // 此处的逗号是必须要有的
      }
      

      上面代码也可以等价于

      a = [3][4]int {
          {0, 1, 2, 3} ,
          {4, 5, 6, 7} ,
          {8, 9, 10, 11}}
      
    1. func getSequence() func() int { i:=0 return func() int { i+=1 return i } }

      闭包,A函数 返回一个函数,假设返回的函数为B,那么函数B,可以使用A函数中的变量

      nextNumber := getSequence()

      nextNumber 是 返回函数B类型,func() int,i是函数A中的变量,初始值 i=0

      执行nextNumber(),i+=1, reuturn i ==> 1

      再执行nextNumber(),i+=1,return i ==> 2

      再执行nextNumber(),i+=1,return i ==> 3

    1. for 循环的 range 格式可以对 slice、map、数组、字符串等进行迭代循环。
      for key, value := range oldMap {
           newMap[key] = value
      }
      
    1. 以下描述了 select 语句的语法
      • 每个case都必须是一个通信
      • 所有channel表达式都会被求值
      • 所有被发送的表达式都会被求值
      • 如果任意某个通信可以进行,它就执行;其他被忽略。
      • 如果有多个case都可以运行,Select会随机公平地选出一个执行。其他不会执行。

      否则:

      1. 如果有default子句,则执行该语句。
      2. 如果没有default字句,**select将阻塞,直到某个通信可以运行**;Go不会重新对channel或值进行求值。
      
    1. iota 表示从 0 开始自动加 1,所以 i=1<<0, j=3<<1(<< 表示左移的意思),即:i=1, j=6,这没问题,关键在 k 和 l,从输出结果看 k=3<<2,l=3<<3。
      package main
      import "fmt"
      const (
          i=1<<iota
          j=3<<iota
          k
          l
      )
      func main() {
          fmt.Println("i=", i)
          fmt.Println("j=", j)
          fmt.Println("k=", k)
          fmt.Println("l=", l)
      }
      

      以上实例运行结果为:

      i=1
      j=6
      k=12
      l=24
      
    1. 这种因式分解关键字的写法一般用于声明全局变量
      var (
          vname1 v_type1
          vname2 v_type2
      )
      
    1. 以一个大写字母开头,如:Group1,那么使用这种形式的标识符的对象就可以被外部包的代码所使用(客户端程序需要先导入这个包),这被称为导出(像面向对象语言中的 public)
    2. main 函数是每一个可执行程序所必须包含的,一般来说都是在启动后第一个执行的函数(如果有 init() 函数则会先执行该函数)
  23. Aug 2018
  24. Jan 2018
  25. Nov 2017
  26. Oct 2017
  27. Sep 2017
  28. May 2017
    1. AlphaGo is going out on top. After beating Ke Jie, the world’s best player of the ancient Chinese board game Go, for the third time today at the Future of Go Summit in Wuzhen, Google’s DeepMind unit announced that it would be the last event match the AI plays.

      This makes me feel worse somehow than if it was going to continue to play. Seems like it is saying: well, tick the box for beating humans at Go...

    1. It inspired his work at Google, where he led the creation of the historical map platform Field Trip, and then, the Pokémon Go precursor, Ingress.

      I loved field trip for Glass!

    2. Niantic, the maker of Pokémon Go, is teaming up with the Knight Foundation in a multiyear commitment promoting civic engagement in communities. That means the two entities will pitch in time, money, and plenty of Pokémon to get citizens outside, exploring their towns in city-organized events.

      Very interesting development!

    1. The regulation of an entire burgeoning industry, and the interpretation of the Constitution in the digital age, could be impacted by the court’s decision in a case inspired by Pokémon.

      This is a really interesting case. How have I not heard of it?

    1. The diffusion and the public endorsement of data FAIRness has been rapid

      Good to see posts on this.

  29. Apr 2017
  30. Jan 2017
  31. Aug 2016
  32. Apr 2016
  33. Dec 2015