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What is the difference between ${var}, “$var”, and “${var}” in the Bash shell?
...out a subscript is equivalent to referencing the array with a subscript of 0.
In other words, if you don't supply an index with [], you get the first element of the array:
foo=(a b c)
echo $foo
# a
Which is exactly the same as
foo=(a b c)
echo ${foo}
# a
To get all the elements of an array, ...
How to initialise a string from NSData in Swift
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Adding two numbers concatenates them instead of calculating the sum
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350
They are actually strings, not numbers. The easiest way to produce a number from a string is to ...
Why are arrays covariant but generics are invariant?
...nimals = dogs; // Awooga awooga
animals.add(new Cat());
Dog dog = dogs.get(0); // This should be safe, right?
Suddenly you have a very confused cat.
The original motivation for making arrays covariant described in the wikipedia article didn't apply to generics because wildcards made the expr...
Is there a __CLASS__ macro in C++?
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edited Nov 3 '09 at 11:55
answered Nov 3 '09 at 11:44
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What is the javascript MIME type for the type attribute of a script tag? [duplicate]
...script is concerned, but it's part of the spec for both HTML 4 and XHTML 1.0.
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Rename all files in directory from $filename_h to $filename_half?
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308
Just use bash, no need to call external commands.
for file in *_h.png
do
mv "$file" "${file/...
How to put a delay on AngularJS instant search?
...(function() {
$scope.filterText = tempFilterText;
}, 250); // delay 250 ms
})
});
HTML:
<input id="searchText" type="search" placeholder="live search..." ng-model="searchText" />
<div class="entry" ng-repeat="entry in entries | filter:filterText">
<span&...