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Regular expressions in an Objective-C Cocoa application
...e (or list of values) I care about. In fact, you can store a small library set of functions customized for particular tasks and then just call them as needed.
I don't know if it this technique scales to huge volumes of repeated parsing requests, but for quick transactional stuff it gets the job don...
How to iterate over arguments in a Bash script
...between the various "$@" notations, here is one more example:
$ cat xx.sh
set -x
al $@
al $*
al "$*"
al "$@"
$ sh xx.sh * */*
+ al He said, '"Don'\''t' do 'this!"' anotherdir my dir xx.sh anotherdir/myfile my dir/my file
He
said,
"Don't
do
this!"
anotherdir
my
dir
xx.sh
anotherdir/myfile
m...
How to sum up elements of a C++ vector?
...a, and provides the vector-like methods).
For an empty vector, the sum is set to zero. On every insertion to the vector, add the element being inserted to the sum. On every deletion, subtract it. Basically, anything that can change the underlying vector is intercepted to ensure the sum is kept cons...
How to get a Fragment to remove itself, i.e. its equivalent of finish()?
... popBackStack() is the only solution which works when you want to set the action bar title back to the previous state after you delete the fragment. Otherwise I wouldn't need to combine the both high rated solutions from stackoverflow.com/questions/13472258/… and this solution here to alw...
How do you copy a record in a SQL table but swap out the unique id of the new row?
... * INTO #TempRow FROM SourceTable WHERE KeyColumn = 'ABC';
UPDATE #TempRow SET KeyColumn = 'XYZ';
INSERT INTO SourceTable SELECT * FROM #TempRow;
DELETE #TempRow;
Once you have finished the drop the temp table.
DROP TABLE #TempRow;
...
Format floats with standard json module
...
It's good hygiene to set it back when you're done: original_float_repr = encoder.FLOAT_REPR encoder.FLOAT_REPR = lambda o: format(o, '.2f') print json.dumps(1.0001) encoder.FLOAT_REPR = original_float_repr
– Jeff Kaufman
...
C++ Tuple vs Struct
... from running this on my machine with VS2015CE using the default 'Release' settings:
Structs took 0.0814905 seconds.
Tuples took 0.282463 seconds.
Please monkey with it until you're satisfied.
#include <iostream>
#include <string>
#include <tuple>
#include <vector>
#inclu...
IntelliJ IDEA with Junit 4.7 “!!! JUnit version 3.8 or later expected:”
... to 1.8 java solved the issue.
Or, you can also do it globally via Module Settings > SDK Location > JDK, specifying Oracle's JDK 8 instead of Android SDK's copy.
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Android: Generate random color on click?
...
Random rnd = new Random();
paint.setARGB(255, rnd.nextInt(256), rnd.nextInt(256), rnd.nextInt(256));
or
Random rnd = new Random();
int color = Color.argb(255, rnd.nextInt(256), rnd.nextInt(256), rnd.nextInt(256));
view.setBackgroundColor(color);
Th...
An algorithm for inflating/deflating (offsetting, buffering) polygons
...
I thought I might briefly mention my own polygon clipping and offsetting library - Clipper.
While Clipper is primarily designed for polygon clipping operations, it does polygon offsetting too. The library is open source freeware written in Delphi, C++ and C#. It has a very unencumbered Bo...