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How do I pick 2 random items from a Python set? [duplicate]
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Use the random module: http://docs.python.org/library/random.html
import random
random.sample(set([1, 2, 3, 4, 5, 6]), 2)
This samples the two values without replacement (so the two values are different).
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How to make certain text not selectable with CSS [duplicate]
...Firefox */
-ms-user-select: none; /* IE10+/Edge */
user-select: none; /* Standard */
To target IE9 downwards the html attribute unselectable must be used instead:
<p unselectable="on">Test Text</p>
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Unable to install R package in Ubuntu 11.04 [closed]
I'm new to Linux and R.
2 Answers
2
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Correct use of transactions in SQL Server
I have 2 commands and need both of them executed correctly or none of them executed. So I think I need a transaction, but I don't know how to use it correctly.
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“while :” vs. “while true” [duplicate]
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from manual:
: [arguments]
No effect; the command does nothing beyond expanding arguments and performing any specified
redirections. A zero exit code is returned.
As this returns always zero therefore is is similar to be used as true
Check out this answ...
How to condense if/else into one line in Python? [duplicate]
...statement to one line in Python?
I oftentimes see all sorts of shortcuts and suspect it can apply here too.
4 Answers
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How do I find the length (or dimensions, size) of a numpy matrix in python? [duplicate]
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shape is a property of both numpy ndarray's and matrices.
A.shape
will return a tuple (m, n), where m is the number of rows, and n is the number of columns.
In fact, the numpy matrix object is built on top of the ndarray object, one of numpy's two fundamental objec...
ImportError: No module named dateutil.parser
I am receiving the following error when importing pandas in a Python program
10 Answers
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Fastest way to determine if an integer is between two integers (inclusive) with known sets of values
...arison/branch. Whether it'll really improve speed may be open to question, and even if it does, it's probably too little to notice or care about, but when you're only starting with two comparisons, the chances of a huge improvement are pretty remote. The code looks like:
// use a < for an inclus...
Read input from console in Ruby?
...ing like that?
Update
Kernel.gets tries to read the params found in ARGV and only asks to console if not ARGV found. To force to read from console even if ARGV is not empty use STDIN.gets
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