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Check if something is (not) in a list in Python
...lement is at the start of the list, in evaluates faster:
lst = list(range(10001))
%timeit 1 in lst
%timeit 10000 in lst # Expected to take longer time.
68.9 ns ± 0.613 ns per loop (mean ± std. dev. of 7 runs, 10000000 loops each)
178 µs ± 5.01 µs per loop (mean ± std. dev. of 7 runs, 10000 ...
Set value for particular cell in pandas DataFrame using index
... 10
which does modify df.
In [18]: %timeit df.set_value('C', 'x', 10)
100000 loops, best of 3: 2.9 µs per loop
In [20]: %timeit df['x']['C'] = 10
100000 loops, best of 3: 6.31 µs per loop
In [81]: %timeit df.at['C', 'x'] = 10
100000 loops, best of 3: 9.2 µs per loop
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Command-line Unix ASCII-based charting / plotting tool
... | ** |
1000 ++ * ++
| * |
| * ...
jQuery .ready in a dynamically inserted iframe
...ame').contents());
if (el.length != 1) {
setTimeout(manipIframe, 100);
return;
}
el.html('Hello World!');
}
manipIframe();
});
This doesn't require code in the called iframe pages. All code resides and executes from the parent frame/window.
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How to apply specific CSS rules to Chrome only?
...fari and Chrome, if Chrome rule needed */
.container {
margin-top:100px;
}
/* Safari 5+ ONLY */
::i-block-chrome, .container {
margin-top:0px;
}
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Check if a Windows service exists and delete in PowerShell
...ause it doesn't throw an error. I was very wrong. Running each in a loop 100 times, Get-Service took 0.16 seconds while Get-WmiObject took 9.66 seconds. So Get-Service is 60x faster than Get-WmiObject.
– Simon Tewsi
Mar 27 '17 at 2:01
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Which terminal command to get just IP address and nothing else?
...
hostname -i on mine it returns: ::1 127.0.1.1 192.168.1.100
– Book Of Zeus
Dec 16 '11 at 2:52
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Show history of a file? [duplicate]
...
ralphtheninjaralphtheninja
100k1919 gold badges9797 silver badges117117 bronze badges
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Grep characters before and after match?
...mall amounts of data, but it starts getting slow when you are matching >100 characters - e.g. in my giant xml file, I want {1,200} before and after, and it is too slow to use.
– Benubird
Oct 18 '13 at 11:27
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How to merge a transparent png image with another image using PIL
....png")
fg_img = Image.open("fg.png")
p = trans_paste(fg_img,bg_img,.7,(250,100))
p.show()
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