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Explicitly calling return in a function or not

... Question was: Why is not (explicitly) calling return faster or better, and thus preferable? There is no statement in R documentation making such an assumption. The main page ?'function' says: function( arglist ) expr return(value) Is it faster without calling return? Both function() and re...
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How to execute ipdb.set_trace() at will while running pytest tests

...my_test.py --pdb --pdbcls=IPython.terminal.debugger:Pdb From the help command: pytest -h --pdb start the interactive Python debugger on errors. --pdbcls=modulename:classname start a custom interactive Python debugger on errors. Fo...
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Pass request headers in a jQuery AJAX GET call

...xhr.setRequestHeader('X-Test-Header', 'test-value');} works well in chrome and firefox but not in IE8. there is no X-Test-Header send. how to fix it? Thx – user1940268 Jan 31 '15 at 0:01 ...
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What is the easiest/best/most correct way to iterate through the characters of a string in Java?

StringTokenizer ? Convert the String to a char[] and iterate over that? Something else? 15 Answers ...
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window.close and self.close do not close the window in Chrome

...curity feature, introduced a while ago, to stop various malicious exploits and annoyances. From the latest working spec for window.close(): The close() method on Window objects should, if all the following conditions are met, close the browsing context A: The corresponding browsing cont...
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How can I check the size of a collection within a Django template?

... |length I always get confused with jinja templating in Flask and with django. Thanks for the information. Really helpful. – Doogle Jul 29 '18 at 9:42 7 ...
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Python timedelta in years

...een since some date. Currently I've got timedelta from datetime module and I don't know how to convert it to years. 16 ...
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Check if string begins with something? [duplicate]

I know that I can do like ^= to see if an id starts with something, and I tried using that for this, but it didn't work... Basically, I'm retrieving the url and I want to set a class for an element for pathnames that start in a certain way... ...
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Print the contents of a DIV

... Firefox or other browsers too). The best way i found is to run the print (and close) only after windows is loaded. So after: mywindow.document.write(data); Add this: mywindow.document.write('<script type="text/javascript">$(window).load(function() { window.print(); window.close(); });</scr...
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Rails: FATAL - Peer authentication failed for user (PG::Error)

I am running my development on Ubuntu 11.10, and RubyMine 8 Answers 8 ...