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Javascript reduce on array of objects
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A cleaner way to accomplish this is by providing an initial value:
var arr = [{x:1}, {x:2}, {x:4}];
arr.reduce(function (acc, obj) { return acc + obj.x; }, 0); // 7
console.log(arr);
The first time the anonymous function is called, it gets called ...
Profiling Django
...e access optimization from the documentation.
And Django performance tips by
Jacob Kaplan-Moss.
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Should Javadoc comments be added to the implementation?
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The fact that some tools (I'm looking at you, Eclipse!) generate these by default when overriding a method is only a sad state of things, but doesn't justify cluttering your code with useless noise.
There can of course be the opposite case, when you actually want to add a comment to the overr...
What is the Invariant Culture?
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Specifically, you won't be caught out by different uses of commas and points in the string forms of numbers, or with odd case conversions.
– Steve Gilham
Mar 11 '10 at 8:04
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Git ignore sub folders
... There was a bug on Visual Studio related to ** . Should be fixed by now. link
– Bogac
Mar 10 '15 at 15:41
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How to get current working directory in Java?
...ocation(). This works fine in JAR files as well. You can obtain CodeSource by ProtectionDomain#getCodeSource() and the ProtectionDomain in turn can be obtained by Class#getProtectionDomain().
public class Test {
public static void main(String... args) throws Exception {
URL location = T...
console.log javascript [Function]
... imageUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454...
input() error - NameError: name '…' is not defined
...emove("/etc/hosts")
this will be evaluated as a function call expression by python and it will be executed. If you are executing Python with elevated privileges, /etc/hosts file will be deleted. See, how dangerous it could be?
To demonstrate this, let's try to execute input function again.
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Regular expression to match standard 10 digit phone number
...s use
^(\+0?1\s)?\(?\d{3}\)?[\s.-]\d{3}[\s.-]\d{4}$
Update :
As noticed by user Simon Weaver below, if you are also interested in matching on unformatted numbers just make the separator character class optional as [\s.-]?
^(\+\d{1,2}\s)?\(?\d{3}\)?[\s.-]?\d{3}[\s.-]?\d{4}$
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Convert python datetime to epoch with strftime
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@earthmeLon Your bracketing is wrong. Timedeltas (made by subtracting two datetimes) have total_seconds, but datetimes do not.
– jleahy
Aug 21 '13 at 10:24
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