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Why are side-effects modeled as monads in Haskell?
... world states?
printFile :: RealWorld -> ((), RealWorld)
printFile world0 = let (filename, world1) = getLine world0
(contents, world2) = (getContents filename) world1
in (putStrLn contents) world2 -- results in ((), world3)
We see a pattern here. The f...
Behaviour of increment and decrement operators in Python
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1091
++ is not an operator. It is two + operators. The + operator is the identity operator, which d...
How to ignore deprecation warnings in Python
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edited Sep 28 '17 at 7:00
Ioannis Filippidis
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The most accurate way to check JS object's type?
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answered Oct 25 '11 at 18:50
kmathenykmatheny
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What characters do I need to escape in XML documents?
... characters ", ' and > needn't be escaped in text:
<?xml version="1.0"?>
<valid>"'></valid>
Attributes
The safe way is to escape all five characters in attributes. However, the > character needn't be escaped in attributes:
<?xml version="1.0"?>
<valid attribu...
Entity Framework 5 Updating a Record
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680
You are looking for:
db.Users.Attach(updatedUser);
var entry = db.Entry(updatedUser);
entry.Pro...
一分钟明白 VS manifest 原理 - C/C++ - 清泛网 - 专注C/C++及内核技术
...本，相反。
为什么我的manifest明明指明
name="Microsoft.VC80.DebugCRT" version="8.0.50608.0"，
但是用depends.exe工具却发现引用的是8.00.50727.42呢？
因为在C:/WINDOWS/WinSxS/Policies下，有publisher configuration file也叫policy文件,如8.0.50727.42.policy文件...
Set 4 Space Indent in Emacs in Text Mode
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20 Answers
20
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Using Git, show all commits that are in one branch, but not the other(s)
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10 Answers
10
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Stop/Close webcam which is opened by navigator.getUserMedia
... individually.
More info here: https://developers.google.com/web/updates/2015/07/mediastream-deprecations?hl=en#stop-ended-and-active
Example (from the link above):
stream.getTracks().forEach(function(track) {
track.stop();
});
Browser support may differ.
Original answer
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