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How to check if a list is empty in Python? [duplicate]
...l performance pessimisation: do not spend time counting elements of potentially long collections, if all you need to know is if they are empty.
– Ad N
Aug 12 '15 at 12:38
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How can I count the number of children?
....length;
The find() method traverses DOM downwards along descendants, all the way down to the last descendant.
Note: children() method traverses a single level down the DOM tree.
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gitx How do I get my 'Detached HEAD' commits back into master [duplicate]
Using Git X and must have fumbled royally on something. Looks like a few days ago I created a branch called detached HEAD and have been committing to it. My normal process is to commit to master and then push that to origin . But I can't push detached HEAD .
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How can I stop float left?
...ve fixes worked for me (I had the same problem), but this did:
Try putting all of the floated elements in a div element:
<div class="row">...</div>.
Then add this CCS:
.row::after {content: ""; clear: both; display: table;}
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Complex numbers usage in python [closed]
...suffix comes from electrical engineering, where the variable ‘i’ is usually used for current. (Reasoning found here.)
The type of a complex number is complex, and you can use the type as a constructor if you prefer:
>>> complex(2,3)
(2+3j)
A complex number has some built-in accesso...
Get element type with jQuery
...ed by the prev(), which is specific for the example code in question. Basically, $(this).is("input");
– Fanky
Jan 9 '17 at 10:04
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How to convert integer to string in C? [duplicate]
...printf():
int someInt = 368;
char str[12];
sprintf(str, "%d", someInt);
All numbers that are representable by int will fit in a 12-char-array without overflow, unless your compiler is somehow using more than 32-bits for int. When using numbers with greater bitsize, e.g. long with most 64-bit comp...
Disable form auto submit on button click
... type to button.
But if you bind your event handler like below, you target all buttons and do not have to do it manually for each button!
$('form button').on("click",function(e){
e.preventDefault();
});
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“while :” vs. “while true” [duplicate]
...es nothing, but returns 0 (success). Thus, it's shorter (and faster) than calling an actual command to do the same thing.
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python .replace() regex [duplicate]
...waway script - both the regex approach and the string search approach have all sorts of inputs they'll fail on. For anything in production, I would want to be doing some sort of more sophisticated parsing than either regex or simple string search can accomplish.
– Julian
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