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How to add multiple columns to a table in Postgres?
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Try this :
ALTER TABLE table ADD COLUMN col1 int, ADD COLUMN col2 int;
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Get underlying NSData from UIImage
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192
NSData *imageData = UIImageJPEGRepresentation(image, 0.7); // 0.7 is JPG quality
or
NSData ...
How to see if an NSString starts with a certain other string?
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answered Oct 28 '11 at 20:43
CyrilleCyrille
24.1k1212 gold badges6060 silver badges8787 bronze badges
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MySQL: What's the difference between float and double?
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106
They both represent floating point numbers. A FLOAT is for single-precision, while a DOUBLE is...
Python : List of dict, if exists increment a dict value, if not append a new dict
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210
That is a very strange way to organize things. If you stored in a dictionary, this is easy:
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Duplicate headers received from server
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edited May 23 '17 at 12:18
Community♦
111 silver badge
answered Feb 12 '13 at 16:10
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Convert to binary and keep leading zeros in Python
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Use the format() function:
>>> format(14, '#010b')
'0b00001110'
The format() function simply formats the input following the Format Specification mini language. The # makes the format include the 0b prefix, and the 010 size formats the output to fit in 10 chara...
How to make an app's background image repeat
...ng black while scrolling.
drawable/app_background.xml:
<?xml version="1.0" encoding="utf-8"?>
<bitmap xmlns:android="http://schemas.android.com/apk/res/android"
android:src="@drawable/actual_pattern_image"
android:tileMode="repeat" />
values/styles.xml:
<?xml ...
Stop execution of Ruby script
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103
Either abort or exit will help.
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How to copy directories in OS X 10.7.3?
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251
Is there something special with that directory or are you really just asking how to copy directo...