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How to manually expand a special variable (ex: ~ tilde) in bash
...r of these two:
Charle's Duffy's solution
Håkon Hægland's solution
Original answer for historic purposes (but please don't use this)
If I'm not mistaken, "~" will not be expanded by a bash script in that manner because it is treated as a literal string "~". You can force expansion via eval ...
How to compute the sum and average of elements in an array?
...
var sum = 0;
for( var i = 0; i < elmt.length; i++ ){
sum += parseInt( elmt[i], 10 ); //don't forget to add the base
}
var avg = sum/elmt.length;
document.write( "The sum of all the elements is: " + sum + " The average is: " + avg ...
JavaScript equivalent of PHP’s die
... something like "die" in JavaScript? I've tried with "break", but doesn't work :)
14 Answers
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How do I use Wget to download all images into a single folder, from a URL?
I am using wget to download all images from a website and it works fine but it stores the original hierarchy of the site with all the subfolders and so the images are dotted around. Is there a way so that it will just download all the images into a single folder? The syntax I'm using at the moment i...
How to find out what character key is pressed?
...;
}
alert(String.fromCharCode(keynum));
}
</script>
<form>
<input type="text" onkeypress="return myKeyPress(event)" />
</form>
JQuery:
$(document).keypress(function(event){
alert(String.fromCharCode(event.which));
});
...
Ruby on Rails and Rake problems: uninitialized constant Rake::DSL
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This worked for me. I needed to do bundle update rake first. Then I checked with bundle show rake. It should say 0.8.7. Then rake db:migrate.
– B Seven
May 23 '11 at 1:25
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Create a folder inside documents folder in iOS apps
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I do that the following way:
NSError *error;
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0]; // Get documents folder
NSString *dataPath = [documentsDire...
UITapGestureRecognizer - single tap and double tap
I am trying to add 2 UITapGestureRecognizers to a view, one for single tap and one for double tap events. The single tap recognizer is working as expected (on its own). But I don't seem to be able to get the double tap recognizer working.
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What does “opt” mean (as in the “opt” directory)? Is it an abbreviation? [closed]
What does "opt" mean (as in the "opt" directory)? I commonly see this directory in Unix systems with development tools inside.
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How do I run a program with a different working directory from current, from Linux shell?
Using a Linux shell , how do I start a program with a different working directory from the current working directory?
11 A...