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Select 50 items from list at random to write to file
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If the list is in random order, you can just take the first 50.
Otherwise, use
import random
random.sample(the_list, 50)
random.sample help text:
sample(self, population, k) method of random.Random instance
Chooses k unique random elements f...
Mathematical functions in Swift
...I use mathematical functions like sqrt() , floor() , round() , sin() , etc?
6 Answers
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Building a fat jar using maven
... the manifest file for me.
I had to add it to the maven-assembly-plugin in order to get that in the manifest
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PyPy — How can it possibly beat CPython?
... of Python that can be translated by PyPy's translation framework". But in order to be translated, RPython code has to be statically typed (the types are inferred, you don't declare them, but it's still strictly one type per variable), and you can't do things like declaring/modifying functions/class...
Android: Difference between onInterceptTouchEvent and dispatchTouchEvent?
...nsumes all subsequent events
For each child view (in reverse order they were added)
If touch is relevant (inside view), child.dispatchTouchEvent()
If it is not handled by a previous, dispatch to next view
If no children handles the event, the listene...
What is the significance of #pragma marks? Why do we need #pragma marks?
... Table View Protocol Methods, AlertView Methods, Init Methods, Declaration etc.
#pragma mark is the facility for XCode but it has no impact on your code. It merely helps to make it easier to find methods while coding.
shar...
How to construct a WebSocket URI relative to the page URI?
...es by the websocket server such as passing tokens (e.g. via query params), etc.
– kanaka
Apr 11 '17 at 20:54
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Rebase array keys after unsetting elements
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+1. I note that the manual does not explicitly state that ordering will be maintained, but I can't see why it wouldn't be.
– Lightness Races in Orbit
May 9 '11 at 22:20
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Need to list all triggers in SQL Server database with table name and table's schema
...were attempting to pull the parent tables schema information, I believe in order to do so you would also need to join the sysobjects table on itself so that you can correctly get the schema information for the parent table. the query above does this. Also the sysusers table wasn't needed in the resu...
Why is `std::move` named `std::move`?
...by the rest of the program (nobody else has
a reference to the rvalue in order to detect a difference).
If at the time swap was instead presented like this:
template <class T>
void
swap(T& a, T& b)
{
T tmp(cast_to_rvalue(a));
a = cast_to_rvalue(b);
b = cast_to_rvalue(t...