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Why does Python code run faster in a function?
...e names are assigned to indexes. This is possible because you can't dynamically add local variables to a function. Then retrieving a local variable is literally a pointer lookup into the list and a refcount increase on the PyObject which is trivial.
Contrast this to a global lookup (LOAD_GLOBAL), w...
Guaranteed lifetime of temporary in C++?
...or the lifetime of a temporary variable that is created within a function call but not used as a parameter? Here's an example class:
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What are my environment variables? [closed]
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I am not sure if thats what you want, but try printenv
This will show you all your environment variables.
About where they are stored
Linux: where are environment variables stored?
How to set Shell Environment Variables
http://www.codecoffee.com/tipsforlinux/articles/030.html
Happy reading :-)...
Git Blame Commit Statistics
... path or modify your path and use it like
git authors '*/*.c' # look for all files recursively ending in .c
git authors '*/*.[ch]' # look for all files recursively ending in .c or .h
git authors 'Makefile' # just count lines of authors in the Makefile
Original Answer
While the accepted answer d...
Pass request headers in a jQuery AJAX GET call
...uestHeader('X-Test-Header', 'test-value');}
– matthew_360
Jan 18 '13 at 20:50
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Asynchronous Process inside a javascript for loop [duplicate]
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The for loop runs immediately to completion while all your asynchronous operations are started. When they complete some time in the future and call their callbacks, the value of your loop index variable i will be at its last value for all the callbacks.
This is because t...
What are the main performance differences between varchar and nvarchar SQL Server data types?
I'm working on a database for a small web app at my school using SQL Server 2005 .
I see a couple of schools of thought on the issue of varchar vs nvarchar :
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Dynamically access object property using variable
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You inspired me to create an enhanced version that allows bracket notation & property names with spaces as well as validating the inputs: it.knightnet.org.uk/kb/node-js/get-properties
– Julian Knight
Jan 3 '19 at 14:04
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“The breakpoint will not currently be hit. The source code is different from the original version.”
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Using clean does not always work. I had to manually delete everything in my bin folder to get it to work again.
– Carra
May 4 '12 at 13:53
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How can I put a database under git (version control)?
... and version control that instead. This way it is a flat text file.
Personally I suggest that you keep both a data dump, and a schema dump. This way using diff it becomes fairly easy to see what changed in the schema from revision to revision.
If you are making big changes, you should have a secon...