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What are the use cases for selecting CHAR over VARCHAR in SQL?
...the word "FooBar"
CHAR(6) = 6 bytes (no overhead)
VARCHAR(100) = 8 bytes (2 bytes of overhead)
CHAR(10) = 10 bytes (4 bytes of waste)
The bottom line is CHAR can be faster and more space-efficient for data of relatively the same length (within two characters length difference).
Note: Microsoft SQL...
How to use ADB to send touch events to device using sendevent command?
... simulate tapping, it's:
input tap x y
You can use the adb shell ( > 2.3.5) to run the command remotely:
adb shell input tap x y
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How should I edit an Entity Framework connection string?
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Mosh Feu
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answered Mar 14 '11 at 15:21
Fabian Nicol...
How to split a file into equal parts, without breaking individual lines? [duplicate]
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wc -l xyzzy.*
This outputs:
Total lines = 70
Lines per file = 12
12 xyzzy.aa
12 xyzzy.ab
12 xyzzy.ac
12 xyzzy.ad
12 xyzzy.ae
10 xyzzy.af
70 total
More recent versions of split allow you to specify a number of CHUNKS with the -n/--number option. You can therefore use som...
Check if value already exists within list of dictionaries?
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273
Here's one way to do it:
if not any(d['main_color'] == 'red' for d in a):
# does not exist...
In java how to get substring from a string till a character c?
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edited May 28 '13 at 17:40
Anirudha
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$PHP_AUTOCONF errors on mac os x 10.7.3 when trying to install pecl extensions
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answered Mar 2 '12 at 2:29
Bob SprynBob Spryn
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Delete column from SQLite table
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206
From: http://www.sqlite.org/faq.html:
(11) How do I add or delete columns from an existing...
Convert object to JSON in Android
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281
Most people are using gson : check this
Gson gson = new Gson();
String json = gson.toJson(myO...
Suppress/ print without b' prefix for bytes in Python 3
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Use decode:
print(curses.version.decode())
# 2.2
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