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Python - When to use file vs open
...he moment. They've had a sort of strange relationship, but file() is going now, so there's no need to worry anymore.
The following is from the Python 2.6 docs. [bracket stuff] added by me.
When opening a file, it’s preferable to use open() instead of invoking this [file()] constructor directl...
Why does the C preprocessor interpret the word “linux” as the constant “1”?
...of K&R), and C code of any complexity was typically a complex maze of #ifdefs to allow for differences between systems. These macro definitions were generally set by the compiler itself, not defined in a library header file. Since there were no real rules about which identifiers could be used by...
How do I grant myself admin access to a local SQL Server instance?
...the command prompt to stop the SQL Server service:
net stop mssqlserver
Now go to the directory where SQL server is installed. The directory can for instance be one of these:
C:\Program Files\Microsoft SQL Server\MSSQL10_50.MSSQLSERVER\MSSQL\Binn
C:\Program Files\Microsoft SQL Server\MSSQL13.MS...
Advantage of switch over if-else statement
...Obviously this just moves the problem to a different area of the code, but now you have the opportunity to reuse this test. You also have more options for how to solve it. You could use std::set, for example:
bool RequiresSpecialEvent(int numError)
{
return specialSet.find(numError) != specia...
Mock functions in Go
...more modular. In this case, the Downloader object's 'get_page' behavior is now pluggable--we can dynamically change its implementation. You only have to change your main code if it was badly written in the first place.
– weberc2
May 29 '14 at 13:37
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Ignore python multiple return value
...to return the first value, x = func()[1] to return the second, and so on.
If you want to get multiple values at a time, use something like x, y = func()[2:4].
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Import a module from a relative path
...r.
import os, sys, inspect
# realpath() will make your script run, even if you symlink it :)
cmd_folder = os.path.realpath(os.path.abspath(os.path.split(inspect.getfile( inspect.currentframe() ))[0]))
if cmd_folder not in sys.path:
sys.path.insert(0, cmd_folder)
# Use this if you want to...
Add single element to array in numpy
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When appending only once or once every now and again, using np.append on your array should be fine. The drawback of this approach is that memory is allocated for a completely new array every time it is called. When growing an array for a significant amount of samp...
.trim() in JavaScript not working in IE
...e under Mozilla, but an error displays when I try it in IE8. Does anyone know what is going on here? Is there anyway I can make it work in IE?
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Why use def main()? [duplicate]
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Without the main sentinel, the code would be executed even if the script were imported as a module.
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