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What does the @ symbol represent in objective-c?
...reely intermix with the C or C++ part.
Thus with very few exceptions, any time you see @ in some Objective-C code, you're looking at Objective-C constructs rather than C or C++ constructs.
The major exceptions are id, Class, nil, and Nil, which are generally treated as language keywords even thoug...
Dynamic Sorting within SQL Stored Procedures
...ulating. I twitch and have to hold back urges to fix glaring mistakes any time I have to perform maintenance on any of them.
– Sean Hanley
Sep 29 '08 at 21:12
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Is it a bad practice to use break in a for loop? [closed]
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Yes.. For a time I didn't like the idea and coded around it, but it didn't take long before I realized the... "workaround" was often a maintenance nightmare. Well, not a nightmare, but more error-prone.
– MetalMike...
SQLite string contains other string query
...own test, instr(...) is a little bit faster (0.32s vs 0.34s). You can use .timer on in SQLite to measure the execution time.
– Arnie97
Sep 5 '19 at 7:58
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Smooth GPS data
...y second and displaying current position on a map. The problem is that sometimes (specially when accuracy is low) the values vary a lot, making the current position to "jump" between distant points in the map.
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What is the difference between String and string in C#?
...Int32.
As far as guidelines, it's generally recommended to use string any time you're referring to an object.
e.g.
string place = "world";
Likewise, I think it's generally recommended to use String if you need to refer specifically to the class.
e.g.
string greet = String.Format("Hello {0}!"...
live output from subprocess command
...using a python script as a driver for a hydrodynamics code. When it comes time to run the simulation, I use subprocess.Popen to run the code, collect the output from stdout and stderr into a subprocess.PIPE --- then I can print (and save to a log-file) the output information, and check for any ...
Delete directories recursively in Java
...'t consider Apache's commons-io to have reliable symlink detection at this time, as it doesn't handle links on Windows created with mklink.)
For the sake of history, here's a pre-Java 7 answer, which follows symlinks.
void delete(File f) throws IOException {
if (f.isDirectory()) {
for (File ...
JQuery: detect change in input field [duplicate]
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You can bind the 'input' event to the textbox. This would fire every time the input changes, so when you paste something (even with right click), delete and type anything.
$('#myTextbox').on('input', function() {
// do something
});
If you use the change handler, this will only fire aft...
SVN repository backup strategies
...D:\backups\svn\repo
As per the book:
You can run this command at any time and make a safe copy of the repository, regardless of whether other processes are using the repository.
You can of course ZIP (preferably 7-Zip) the backup copy. IMHO It's the most straightforward of the backup options...