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__FILE__, __LINE__, and __FUNCTION__ usage in C++
...factor since it is a compile time macro expansion; it will never effect performance in any way.
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Django - what is the difference between render(), render_to_response() and direct_to_template()?
... in using it here because there is overhead over render_to_response in the form of view function.
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What is the best place for storing uploaded images, SQL database or disk file system? [closed]
...ere are exceptions. For files, the file-system is the most flexible and performant solution (usually).
There are a few problems with storing files on a database - files are generally much larger than your average row - result-sets containing many large files will consume a lot of memory. Also, if y...
List all svn:externals recursively?
... working with an older SVN because in 1.6.1 the output does contain this information.
– Wim Coenen
Jun 18 '09 at 9:35
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Why don't structs support inheritance?
...n't support inheritance is because of arrays.
The problem is that, for performance and GC reasons, arrays of value types are stored "inline". For example, given new FooType[10] {...}, if FooType is a reference type, 11 objects will be created on the managed heap (one for the array, and 10 for each...
How to refer environment variable in POM.xml?
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Also, it makes your build platform- and system-dependant.
– lhunath
Dec 2 '12 at 4:22
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How can I call a custom Django manage.py command directly from a test driver?
... additional requirements.
But if you by some reason cannot decouple logic form command you can call it from any code using call_command method like this:
from django.core.management import call_command
call_command('my_command', 'foo', bar='baz')
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Overloading member access operators ->, .*
...member function, and it takes no arguments. The return value is used to perform the member lookup.
If the return value is another object of class type, not a pointer, then the subsequent member lookup is also handled by an operator-> function. This is called the "drill-down behavior." The langua...
How does the MapReduce sort algorithm work?
...o Codasyl programmers, noting both are "writing in a low-level language performing low-level record manipulation". MapReduce's use of input files and lack of schema support prevents the performance improvements enabled by common database system features such as B-trees and hash partitioning, though ...
How to calculate the bounding box for a given lat/lng location?
...atuschek.de/LatitudeLongitudeBoundingCoordinates
The article explains the formulae and also provides a Java implementation. (It also shows why Federico's formula for the min/max longitude is inaccurate.)
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