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Why are trailing commas allowed in a list?

... items. l1 = [ 1, 2, 3, 4, 5 ] # Now you want to rearrange l1 = [ 1, 2, 3, 5 4, ] # Now you have an error But if you allow trailing commas, and use them, you can easily rearrange the lines without introducing an er...
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PHP - how to best determine if the current invocation is from CLI or web server?

...on that next year there may be new ways to use PHP that we can't possibly know now. I'd rather not think about it when all I care about is weather I should wrap my output in HTML or not. Fortunately, PHP has a way to check for this specifically. Just use http_response_code() without any parameters ...
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Why does C# forbid generic attribute types?

...sible, but without reason. I conceptually understand your answer. Do you know of any more official documentation on the issue? – Bryan Watts Nov 16 '08 at 19:21 2 ...
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How to get the mouse position without events (without moving the mouse)?

...ge has fully loaded and don't move than. After onload the page immediatly knows the position of the mouse. No mouse movement is needed. So mouseenter is also fired, when the page has loaded and the mouse is inside the document area. That is, what the OP originally wanted. No one other provides this ...
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Retrieving the last record in each group - MySQL

... MySQL 8.0 now supports windowing functions, like almost all popular SQL implementations. With this standard syntax, we can write greatest-n-per-group queries: WITH ranked_messages AS ( SELECT m.*, ROW_NUMBER() OVER (PARTITION BY nam...
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Python progression path - From apprentice to guru

I've been learning, working, and playing with Python for a year and a half now. As a biologist slowly making the turn to bio-informatics, this language has been at the very core of all the major contributions I have made in the lab. I more or less fell in love with the way Python permits me to expre...
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Matplotlib - global legend and title aside subplots

I've started with matplot and managed some basic plots, but now I find it hard to discover how to do some stuff I need now :( ...
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Are PHP functions case sensitive?

... . '.php'; if (file_exists($filename)) { require($filename); } } Now with this code: $a = new something(); // works $b = new SomeThing(); // does not work $c = new SOMETHING(); // does not work You may made this work (ie. having effectively case insensitive class names using an autoload...
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performing HTTP requests with cURL (using PROXY)

... Most users sent me a correction, now I share that. If you want to use HTTPS connection through proxy, then you should do this: export https_proxy=your.proxy.server:port Note, that there is "http" proto in URL schema, not httpS! – airw...
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Java JUnit: The method X is ambiguous for type Y

...d some tests working fine. Then, I moved it to a different package, and am now getting errors. Here is the code: 3 Answers ...