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How do I add the contents of an iterable to a set?
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answered Oct 28 '10 at 17:25
SingleNegationEliminationSingleNegationElimination
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Creating an empty list in Python
...how you can test which piece of code is faster:
% python -mtimeit "l=[]"
10000000 loops, best of 3: 0.0711 usec per loop
% python -mtimeit "l=list()"
1000000 loops, best of 3: 0.297 usec per loop
However, in practice, this initialization is most likely an extremely small part of your program, ...
Types in Objective-C on iOS
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answered Jan 21 '10 at 7:28
Philippe LeybaertPhilippe Leybaert
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Count the occurrences of DISTINCT values
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answered Aug 28 '09 at 11:10
AmberAmber
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Rails 3 execute custom sql query without a model
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100
connection = ActiveRecord::Base.connection
connection.execute("SQL query")
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Is it possible to reference one CSS rule within another?
...s: 15px;
border-top-right-radius: 5px;
-moz-border-radius-topleft: 10px;
-moz-border-radius-topright: 10px;
}
You can also apply multiple classes to a single HTML element (the class attribute takes a space separated list).
<div class="opacity radius">
Either of those appro...
What is the >>>= operator in C?
...1 )
or, equivalently:
while( a[0] /= 2 )
The initial value of a[0] is 10. After shifting right once, it become 5, then (rounding down) 2, then 1 and finally 0, at which point the loop ends. Thus, the loop body gets executed three times.
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Trimming a huge (3.5 GB) csv file to read into R
...rge is one pack
while(length(x)) {
ind <- grep("^[^;]*;[^;]*; 20(09|10)", x)
if (length(ind)) writeLines(x[ind], file_out)
x <- readLines(file_in, n=B)
}
close(file_in)
close(file_out)
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Library not loaded: libmysqlclient.16.dylib error when trying to run 'rails server' on OS X 10.6 wit
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apneadiving
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answered Dec 30 '10 at 4:57
Jonty BrookJ...
In Jinja2, how do you test if a variable is undefined?
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answered Oct 1 '10 at 20:14
GarrettGarrett
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