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How does collections.defaultdict work?
...etdefault() for retrieving a value and establishing a default if the value does not exist. By contrast, defaultdict lets the caller specify the default(value to be returned) up front when the container is initialized."
as defined by Doug Hellmann in The Python Standard Library by Example
How to us...
What does “Auto packing the repository for optimum performance” mean?
...his message: "Auto packing the repository for optimum performance", and it does not seem to go away and return the shell.
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Why does JQuery have dollar signs everywhere?
...dollar sign serves the additional purpose of breaking everything since PHP does use the dollar sign to start all variables. (A reason that if you're sharing jQuery scripts for broad net use, it's kind to use the jQuery instead of $).
– liljoshu
Apr 26 '16 at 21...
Regular expression for a string that does not start with a sequence
...+? A string that is tbd_ also starts with that... therefore by definition doesn't need to be followed by any other characters? Otherwise, good example. It does require a regex engine that supports lookaround though.
– BenAlabaster
May 22 '09 at 19:04
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Vertically align text within a div [duplicate]
The code below (also available as a demo on JS Fiddle ) does not position the text in the middle, as I ideally would like it to. I cannot find any way to vertically centre text in a div , even using the margin-top attribute. How can I do this?
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What does the brk() system call do?
...Meantime, the stack starts at the top of memory and grows down. The stack doesn't need explicit system calls to make it bigger; either it starts off with as much RAM allocated to it as it can ever have (this was the traditional approach) or there is a region of reserved addresses below the stack, t...
Why does changing 0.1f to 0 slow down performance by 10x?
Why does this bit of code,
5 Answers
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How can I join elements of an array in Bash?
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@puchu What doesn't work is multi-character separators. To say "space doesn't work" makes it sound like joining with a space doesn't work. It does.
– Eric
Oct 7 '15 at 18:20
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test if event handler is bound to an element in jQuery [duplicate]
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Another way is you can use the following bookmarklet but obviously this does not help at runtime.
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What does “for” attribute do in HTML tag?
...ttribute is bound to the input by the id attribute, and the name attribute does not have to match. <label for="theinput">Input here:</label> <input type='text' name='notmatching' id='theinput'> Will still work
– Glo
Jan 15 '15 at 14:35
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