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Python Pandas: Get index of rows which column matches certain value
... frame (whose data may be gibabytes). What about dftest? Doesn't this also allocate a very large intermediate object where the returned index may be very small, or even empty. Are these magically optimized away using lazy views. If not then surely there must be an efficient way.
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Calculate the center point of multiple latitude/longitude coordinate pairs
...e of the center point of that set (aka a point that would center a view on all points)?
21 Answers
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Get number of digits with JavaScript
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length is a property, not a method. You can't call it, hence you don't need parenthesis ():
function getlength(number) {
return number.toString().length;
}
UPDATE: As discussed in the comments, the above example won't work for float numbers. To make it working we c...
Opening Vim help in a vertical split window
... when I run :help ____ it always opens like that?
– Tallboy
May 7 '12 at 20:37
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@Tallboy Try cn...
getMinutes() 0-9 - How to display two digit numbers?
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@user1063287 see here developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/…
– shlgug
Feb 21 '19 at 16:11
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Print list without brackets in a single row
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print(', '.join(names))
This, like it sounds, just takes all the elements of the list and joins them with ', '.
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Using global variables between files?
...e project, with around 50 files, and I need to define global variables for all those files.
6 Answers
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How can I rotate an HTML 90 degrees?
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Just as a suggestion to all future readers: always place the prefixed rules before the standards definition. In this case, all browser-prefixed rules should be before the transform: rotate(90deg); rule. The reason would be that typically, you want t...
Why should I use version control? [closed]
...re "advanced" features like branching and merging let you have multiple parallel lines of development. You can work in two simultaneous features without interference and switch back and forth without much hassle.
You can see "what changed". This may sound basic, but that's something I find myself ch...
Convert form data to JavaScript object with jQuery
How do I convert all elements of my form to a JavaScript object?
51 Answers
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