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PostgreSQL: Difference between text and varchar (character varying)
...h array).
Check this article from Depesz: http://www.depesz.com/index.php/2010/03/02/charx-vs-varcharx-vs-varchar-vs-text/
A couple of highlights:
To sum it all up:
char(n) – takes too much space when dealing with values shorter than n (pads them to n), and can lead to subtle errors ...
Annotating text on individual facet in ggplot2
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@user3420448 The same, you just have to specify values for each faceting variable.
– joran
Mar 15 '17 at 17:56
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Applying function with multiple arguments to create a new pandas column
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>>> import numpy as np
>>> df = pd.DataFrame({"A": [10,20,30], "B": [20, 30, 10]})
>>> df['new_column'] = np.multiply(df['A'], df['B'])
>>> df
A B new_column
0 10 20 200
1 20 30 600
2 30 10 300
or vectorize arbitrary functi...
Accessing elements of Python dictionary by index
..., 'Mexican':10, 'Chinese':5},
'Grapes':{'Arabian':'25','Indian':'20'} }
print myDict['Apple']['American']
as others suggested. If instead the questions is, you don't know whether 'Apple' as a fruit and 'American' as a type of 'Apple' exist when you read an arbitrary file into your dict...
What is a None value?
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answered Oct 20 '13 at 5:29
DSMDSM
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How to remove item from list in C#?
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answered Apr 4 '12 at 20:47
Wouter de KortWouter de Kort
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How to remove single character from a String
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edited Nov 14 '12 at 20:20
Jamey Sharp
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answ...
How do I break out of nested loops in Java?
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answered May 20 '09 at 9:11
Jon SkeetJon Skeet
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How do you dismiss the keyboard when editing a UITextField
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edited Apr 1 '14 at 20:05
Irfan
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answered N...
Does C# have an equivalent to JavaScript's encodeURIComponent()?
...-> "Stack+Overflow"
Uri.EscapeUriString("Stack Overflow") --> "Stack%20Overflow"
Uri.EscapeDataString("Stack + Overflow") --> Also encodes "+" to "%2b" ---->Stack%20%2B%20%20Overflow
Only the last is correct when used as an actual part of the URL (as opposed to the value of one of the...