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Does pandas iterrows have performance issues?
...ateen Ulhaq
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answered Jul 21 '14 at 17:39
JeffJeff
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parseInt vs unary plus, when to use which?
..., here are a few differences I know of:
An empty string "" evaluates to a 0, while parseInt evaluates it to NaN. IMO, a blank string should be a NaN.
+'' === 0; //true
isNaN(parseInt('',10)); //true
The unary + acts more like parseFloat since it also accepts decimals.
parseInt on...
Is a Python list guaranteed to have its elements stay in the order they are inserted in?
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answered Dec 4 '12 at 0:11
sgesge
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How do you convert a byte array to a hexadecimal string, and vice versa?
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1402
Either:
public static string ByteArrayToString(byte[] ba)
{
StringBuilder hex = new StringBu...
How to make rounded percentages add up to 100%
...ff = target - _.reduce(l, function(acc, x) { return acc + Math.round(x) }, 0);
return _.chain(l).
sortBy(function(x) { return Math.round(x) - x }).
map(function(x, i) { return Math.round(x) + (off > i) - (i >= (l.length + off)) }).
value();
}
foo([13.62...
How do you validate a URL with a regular expression in Python?
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answered May 6 '09 at 1:09
S.LottS.Lott
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Prevent body scrolling but allow overlay scrolling
...and overflow-y: scroll, with top, left, right and bottom properties set to 0: this style makes the overlay fill the whole viewport.
The div inside the overlay is instead just in position: static then the vertical scrollbar you see is related to that element. As a result the content is scrollable b...
Does opacity:0 have exactly the same effect as visibility:hidden
... in the taborder
collapse events taborder
opacity: 0 No Yes Yes
visibility: hidden No No No
visibility: collapse Yes* No No
display: none Yes No No
* Yes inside a table element, otherwise No.
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How to get the first element of an array?
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like this
alert(ary[0])
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Add single element to array in numpy
...mal to use the proper method for adding an element:
a = numpy.append(a, a[0])
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