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Use curly braces to initialize a Set in Python
...yntax:
my_set = {'foo', 'bar', 'baz'}
It's not available before Python 2.7
There's no way to express an empty set using that syntax (using {} creates an empty dict)
Those may or may not be important to you.
The section of the docs outlining this syntax is here.
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How to import load a .sql or .csv file into SQLite?
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162
To import from an SQL file use the following:
sqlite> .read <filename>
To import fro...
Rotating a point about another point (2D)
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twe4ked
2,6091717 silver badges2323 bronze badges
answered Feb 13 '10 at 23:18
Nils PipenbrinckNils Pipenbrin...
How to find the size of an array in postgresql
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112
As vyegorov mentioned, array_length will do the trick. Or if you know that the array is 1-dimen...
Find files and tar them (with spaces)
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218
Use this:
find . -type f -print0 | tar -czvf backup.tar.gz --null -T -
It will:
deal with...
How can I list ALL grants a user received?
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142
If you want more than just direct table grants (e.g., grants via roles, system privileges such a...
Python dict how to create key or append an element to key?
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263
Use dict.setdefault():
dic.setdefault(key,[]).append(value)
help(dict.setdefault):
set...
Prevent ViewPager from destroying off-screen views
...e, rather than the default which is 1.
In your case, you want to specify 2, so that when you are on the third page, the first one is not destroyed, and vice-versa.
mViewPager = (ViewPager)findViewById(R.id.pager);
mViewPager.setOffscreenPageLimit(2);
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Getting full JS autocompletion under Sublime Text
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answered Dec 16 '12 at 22:45
dbndbn
9,59522 gold badges4949 silver badges8181 bronze badges
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Remove substring from the string
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264
You can use the slice method:
a = "foobar"
a.slice! "foo"
=> "foo"
a
=> "bar"
there i...