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How can I get the DateTime for the start of the week?

... This doesn't work if dt is UTC and is already the start of the week e.g. 2012-09-02 16:00:00Z which is Mon, 03 Sep 2012 00:00:00 in local time. So it needs to convert dt to local time or do something a bit smarter. It would also ...
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Most efficient way to convert an HTMLCollection to an Array

...ion); But note per @JussiR's comment, that unlike the "verbose" form, it does create an empty, unused, and indeed unusable array instance in the process. What compilers do about this is outside the programmer's ken. Edit Since ECMAScript 2015 (ES 6) there is also Array.from: var arr = Array.fr...
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Regular Expression for alphanumeric and underscores

... Um...question: Does it need to have at least one character or no? Can it be an empty string? ^[A-Za-z0-9_]+$ Will do at least one upper or lower case alphanumeric or underscore. If it can be zero length, then just substitute the + for ...
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JPA: unidirectional many-to-one and cascading delete

...o the parent is enough to automatically remove all children. This solution does not need any listeners etc. Also a query like DELETE FROM Parent WHERE id = 1 will remove the children. share | improv...
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Removing white space around a saved image in matplotlib

... This simply doesn't work, you still get whitespace around the figure. Setting the transparent option (as mentioned in some answers) doesn't really help either, the whitespace is still there, it's only transparent. –...
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How to build & install GLFW 3 and use it in a Linux project

... Break Debian) Ideally I, or someone else, should propose a solution which does not just install lib files etc into the system default directories as these should be managed by package managers such as apt, and doing so may cause a conflict and break your package management system. See the new "2020...
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Is there any way to do HTTP PUT in python

...g HTTP PUT in python. From my brief reading of the urllib2 docs, it only does HTTP POST . Is there any way to do an HTTP PUT in python? ...
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SQL exclude a column using SELECT * [except columnA] FROM tableA?

...ct * Except ABC" is no more problematic that "Select *" which the language does support. The OP is clearly asking for a way to accomplish something. The person answering this question has no way of knowing if the OP wants to use this in production code or if they just have an immediate need to run...
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How to log a method's execution time exactly in milliseconds?

... "One does not simply...convert to Swift" - Ned Stark – stonedauwg Aug 21 '15 at 16:44 ...
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How do I get an ISO 8601 date on iOS?

...(for example, 2004-02-12T15:19:21+00:00 ) in PHP via date('c') , but how does one get it in Objective-C (iPhone)? Is there a similarly short way to do it? ...