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Closing WebSocket correctly (HTML5, Javascript)
...g around with HTML5 WebSockets. I was wondering, how do I close the connection gracefully? Like, what happens if user refreshes the page, or just closes the browser?
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Where does the “flatmap that s***” idiomatic expression in Scala come from?
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The reasoning behind this phrase is that you can replace a lot of tedious if/then/else code you would write with calls to flatMap (and other higher order functions).
This is especially true for Options (see http://tonymorris.github.io/blog/posts/scalaoption-cheat-sheet/)
But it applies to o...
App Inventor 2 倒计时与计时器教程 - Clock组件详解 · App Inventor 2 中文网
... 组件参考文档 拓展参考文档 概念参考文档 IoT 参考文档 技术和其他指南 中文网原创 VIP 专享 App教程 入门必读 App上架指南 特色 AI 助手 · 一句话生成 App 鸿蒙 · 一套...
How to replace captured groups only?
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A solution is to add captures for the preceding and following text:
str.replace(/(.*name="\w+)(\d+)(\w+".*)/, "$1!NEW_ID!$3")
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Reading file contents on the client-side in javascript in various browsers
I'm attempting to provide a script-only solution for reading the contents of a file on a client machine through a browser.
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What happens to an open file handle on Linux if the pointed file gets moved or deleted
...file is moved onto the existing file using rename(), it's the same as deletion (see above) - that is, the file handle will continue to refer to the original version of the file.
In general, once the file is open, the file is open, and nobody changing the directory structure can change that - they c...
Is functional GUI programming possible? [closed]
...nd I've been really impressed with what I've seen so far (first-class functions, lazy evaluation, and all the other goodies). I'm no expert yet, but I've already begun to find it easier to reason "functionally" than imperatively for basic algorithms (and I'm having trouble going back where I have t...
Is it ok to use dashes in Python files when trying to import them?
... may be a problem when the code is transported to older Mac or Windows versions, or DOS.
In other words: rename your file :)
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Difference between Java SE/EE/ME?
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Java SE = Standard Edition. This is the core Java programming platform. It contains all of the libraries and APIs that any Java programmer should learn (java.lang, java.io, java.math, java.net, java.util, etc...).
Java EE = Enterprise Edition....
Difference between 'python setup.py install' and 'pip install'
...r you, with a minimum amount of fuss.
However, using pip offers some additional advantages that make it much nicer to use.
pip will automatically download all dependencies for a package for you. In contrast, if you use setup.py, you often have to manually search out and download dependencies, whi...