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How can you sort an array without mutating the original array?
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the spread-syntax as array literal (copied from mdn):
var arr = [1, 2, 3];
var arr2 = [...arr]; // like arr.slice()
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Spread_operator
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How to get one value at a time from a generator function in Python?
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Yes, or next(gen) in 2.6+.
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Java 8: performance of Streams vs Collections
... List<Double> result = new ArrayList<>(sourceList.size() / 2 + 1);
for (Integer i : sourceList) {
if (i % 2 == 0){
result.add(Math.sqrt(i));
}
}
return result;
}
@Benchmark
public List<Double> stream()...
Uses of content-disposition in an HTTP response header
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Note that RFC 6266 supersedes the RFCs referenced below. Section 7 outlines some of the related security concerns.
The authority on the content-disposition header is RFC 1806 and RFC 2183. People have also devised content-disposition hacki...
PowerShell: Store Entire Text File Contents in Variable
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124
To get the entire contents of a file:
$content = [IO.File]::ReadAllText(".\test.txt")
Number...
Why in Java 8 split sometimes removes empty strings at start of result array?
...Java 8. The code is retrieved from grepcode, for version 7u40-b43 and 8-b132.
Java 7
public String[] split(CharSequence input, int limit) {
int index = 0;
boolean matchLimited = limit > 0;
ArrayList<String> matchList = new ArrayList<>();
Matcher m = matcher(input);
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How to select Python version in PyCharm?
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152
File -> Settings
Preferences->Project Interpreter->Python Interpreters
If it's not li...
Visual Studio jump to next error shortcut?
When a compile fails in VB.NET in Visual Studio 2008, an Error List pops up at the bottom of the screen. To jump to an error, I double click on an error in the error list.
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How do we control web page caching, across all browsers?
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29 Answers
29
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Passing a function with parameters as a parameter?
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249
Use a "closure":
$(edit_link).click(function(){ return changeViewMode(myvar); });
This crea...