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How do I find if a string starts with another string in Ruby?
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263
puts 'abcdefg'.start_with?('abc') #=> true
[edit] This is something I didn't know before t...
How to convert index of a pandas dataframe into a column?
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835
either:
df['index1'] = df.index
or, .reset_index:
df.reset_index(level=0, inplace=True)
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Manifest merger failed : uses-sdk:minSdkVersion 14
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312
Note: This has been updated to reflect the release of API 21, Lollipop. Be sure to download th...
JavaScript is in array
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edited Mar 13 '12 at 3:44
adeneo
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How to use the 'sweep' function
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edited Jul 25 '19 at 10:13
Rekyt
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answered May 3 '11 at 17:52
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If list index exists, do X
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edited Dec 12 '16 at 0:03
Dimitris Fasarakis Hilliard
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How can I increment a char?
...ord('c') + 1
100
>>> chr(ord('c') + 1)
'd'
>>>
Python 3.x makes this more organized and interesting, due to its clear distinction between bytes and unicode. By default, a "string" is unicode, so the above works (ord receives Unicode chars and chr produces them).
But if you're i...
How to include “zero” / “0” results in COUNT aggregate?
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edited Feb 10 '13 at 0:09
answered Feb 10 '13 at 0:04
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Weighted random numbers
...andom number that is 0 or greater and is less than the sum of the weights
3) go through the items one at a time, subtracting their weight from your random number, until you get the item where the random number is less than that item's weight
Pseudo-code illustrating this:
int sum_of_weight = 0;
f...
How to round a number to n decimal places in Java
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