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How can I start an interactive console for Perl?
...trol+L doesn't work under this command interface, how should I refresh the screen?
– Zen
Feb 26 '15 at 11:13
1
...
Detect all Firefox versions in JS
...ozIndexedDB !== "undefined" &&
typeof document.mozFullScreenEnabled === "undefined") {
firefoxVersion = "9";
}
// Firefox 10 released January 31, 2012
// mozFullScreenEnabled reports if full-screen mode is available
else if (typ...
How can I validate a string to only allow alphanumeric characters in it?
...ine, but I guess that's C#/Java/C++ style -- the coders seem to be paid by screen real estate. Anyway, this is the right direction, so +1.
– Svante
Jun 26 '09 at 0:40
3
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Regex: Remove lines containing “help”, etc
...
Update
To clarify it, the normal behavior will be printing the lines on screen. To pipe it to a file, the > can be used. Thus, in this command:
grep -v help filename > newFileName
grep calls the grep program, obviously
-v is a flag to inverse the output. By defaulf, grep prints the line...
Best way to convert an ArrayList to a string
...
In fact, I think that having any sort of output (be it to disk or to the screen) will be at least an order of a magnitude slower than having to worry about the performance of string concatenations.
Edit: As pointed out in the comments, the above compiler optimization is indeed creating a new inst...
View a list of recent documents in Vim
...y help you.
the opened file list is displayed on the top or bottom of the screen:
in vim normal mode, type :b${bufid} to jump to the ${bufid}_th buffer, for example: type :b13 to jump to the 13th buffer, ie. ngx_mail_ssl_module.c.
besidies, you can map some convenient bindings in your vimrc, su...
Is AsyncTask really conceptually flawed or am I just missing something?
...downloads something off the internet. Using this approach, if you flip the screen 3 times while the task is running, it will be restarted with every screen rotation, and every task except the last throws its result away because its activity reference is null.
– Matthias
...
Xcode without Storyboard and ARC
...ry *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
TestViewController *test = [[TestViewController alloc] initWithNibName:@"TestViewController" bundle:nil];
UINavigationCon...
OS X: equivalent of Linux's wget
...The -o parameter is required on a Mac for output into a file instead of on screen. Specify a different target name for renaming the downloaded file.
Use capital -O for renaming with wget. Lowercase -o will specify output file for transfer log.
...
Android phone orientation overview including compass
...
You might want to check out the One Screen Turn Deserves Another article. It explains why you need the rotation matrix.
In a nutshell, the phone's sensors always use the same coordinate system, even when the device is rotated.
In applications that are not l...