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Catch Ctrl-C in C
... printf("OUCH, did you hit Ctrl-C?\n"
"Do you really want to quit? [y/n] ");
c = getchar();
if (c == 'y' || c == 'Y')
exit(0);
else
signal(SIGINT, INThandler);
getchar(); // Get new line character
}
...
URLWithString: returns nil
...* stringURL = [NSString stringWithFormat:@"http://maps.google.com/maps/geo?q=%@,Montréal,Communauté-Urbaine-de-Montréal,Québec,Canadae&output=csv&oe=utf8&sensor=false", webName];
NSString* webStringURL = [stringURL stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
NSUR...
Is there a bash command which counts files?
...
This simple one-liner should work in any shell, not just bash:
ls -1q log* | wc -l
ls -1q will give you one line per file, even if they contain whitespace or special characters such as newlines.
The output is piped to wc -l, which counts the number of lines.
...
How do I compare two strings in Perl?
...
See perldoc perlop. Use lt, gt, eq, ne, and cmp as appropriate for string comparisons:
Binary eq returns true if the left argument is stringwise equal to the right argument.
Binary ne returns true if the left argument is stringwise not equal to the right ar...
Format a Go string without printing?
... edited Feb 21 '19 at 12:07
ndequeker
6,92366 gold badges5353 silver badges8585 bronze badges
answered Jun 20 '12 at 16:43
...
Simple (non-secure) hash function for JavaScript? [duplicate]
....hashCode(), and receive a numerical hash code (more specifically, a Java equivalent) such as 1395333309.
String.prototype.hashCode = function() {
var hash = 0;
if (this.length == 0) {
return hash;
}
for (var i = 0; i < this.length; i++) {
var char = this.charCod...
What is Delegate? [closed]
...
One question related to your answer. How is it really different from calling a function in normal way? Just because of that it is not known at runtime ?
– Naveed
Jan 11 '10 at 19:51
...
How to pass arguments into a Rake task with environment in Rails? [duplicate]
...s]
Original Answer
When you pass in arguments to rake tasks, you can require the environment using the :needs option. For example:
desc "Testing environment and variables"
task :hello, :message, :needs => :environment do |t, args|
args.with_defaults(:message => "Thanks for logging on")...
CSS selector with period in ID
...
Classic. Just after digging through all the specs writing the question, I read through it some more and found there is an escape character. I've never needed it before, but the CSS spec does allow for backslash (\) escaping like most languages. What do you know?
So in my example, the f...
How to effectively work with multiple files in Vim
...bp,
With :tabe <filepath> you can add a new tab; and with a regular :q or :wq you close a tab.
If you map :tabn and :tabp to your F7/F8 keys you can easily switch between files.
If there are not that many files or you don't have Vim 7 you can also split your screen in multiple files: :sp <...