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What is the use of interface constants?
...ce constants in an appropriately named private interface nested in a class file are also good practice to group all your private constants rather than scatter them all over the file.
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How can I profile C++ code running on Linux?
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If your goal is to use a profiler, use one of the suggested ones.
However, if you're in a hurry and you can manually interrupt your program under the debugger while it's being subjectively slow, there's a simple way to find performance problems.
Just ...
Setting an object to null vs Dispose()
...es (non-memory resources). These could be UI handles, network connections, file handles etc. These are limited resources, so you generally want to release them as soon as you can. You should implement IDisposable whenever your type "owns" an unmanaged resource, either directly (usually via an IntPtr...
Reading output of a command into an array in Bash
...one line per element, there are essentially 3 ways:
With Bash≥4 use mapfile—it's the most efficient:
mapfile -t my_array < <( my_command )
Otherwise, a loop reading the output (slower, but safe):
my_array=()
while IFS= read -r line; do
my_array+=( "$line" )
done < <( my_comm...
Why is it slower to iterate over a small string than a small list?
...CONST 1 (<code object <listcomp> at 0x7f4d06b118a0, file "", line 4>)
#>>> 3 LOAD_CONST 2 ('list_iterate.<locals>.<listcomp>')
#>>> 6 MAKE_FUNCTION 0
#>>> 9 LOAD_CONST ...
Simple explanation of MapReduce?
...andled.
Every worker output (being a Map or a Reduce worker) is in fact a file stored on the distributed file system (GFS for Google) or in the distributed database for CouchDB.
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Proper practice for subclassing UIView?
...stantiating your UIView programmatically. If you are loading it from a nib file (or a storyboard), initWithCoder: will be used. And in initWithCoder: the frame hasn't been calculated yet, so you cannot modify the frame you set up in Interface Builder. As suggested in this answer you may think of cal...
How does lucene index documents?
...ly the best more recent alternative is http://lucene.apache.org/core/3_6_2/fileformats.html
There's an even more recent version at http://lucene.apache.org/core/4_10_2/core/org/apache/lucene/codecs/lucene410/package-summary.html#package_description, but it seems to have less information in it than ...
What is the difference between JSON and Object Literal Notation?
...ML.
Data can be stored in many ways, but if it should be stored in a text file and be readable by a computer, it needs to follow some structure. JSON is one of the many formats that define such a structure.
Such formats are typically language-independent, meaning they can be processed by Java, Pyt...
Is it abusive to use IDisposable and “using” as a means for getting “scoped behavior” for exception
... of politeness, not necessity. The reason you use "using" to dispose of a file when you're done with it is not because it is necessary to do so, but because it is polite -- someone else might be waiting to use that file, so saying "done now" is the morally correct thing to do. I expect that I shoul...