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How to assign the output of a Bash command to a variable? [duplicate]
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In shell you assign to a variable without the dollar-sign:
TEST=`pwd`
echo $TEST
that's better (and can be nested) but is not as portable as the backtics:
TEST=$(pwd)
echo $TEST
Always remember: the dollar-sign is only used when reading a variable.
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Can I set an opacity only to the background image of a div?
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top: 0;
bottom: 0;
left: 0;
right: 0;
background: url(test.jpg) center center;
opacity: .4;
width: 100%;
height: 100%;
}
See test case on jsFiddle
:before and ::before pseudo-element
Another trick is to use the CSS 2.1 :before or CSS 3 ::before pseudo-elements. :...
How to remove leading zeros from alphanumeric text?
...$) negative lookahead ensures that not the entire string will be matched.
Test harness:
String[] in = {
"01234", // "[1234]"
"0001234a", // "[1234a]"
"101234", // "[101234]"
"000002829839", // "[2829839]"
"0", // "[0]"
"0000000", // "[...
Java NIO FileChannel versus FileOutputstream performance / usefulness
...s comparing these two methods. Here is the code I used, the file that I am testing with is around 350MB . Is it a good option to use NIO based classes for File I/O, if I am not looking at random access or other such advanced features?
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How do I achieve the theoretical maximum of 4 FLOPs per cycle?
...doesn't have enough registers for this to compile well.
This code has been tested to work well on Visual Studio 2010/2012 and GCC 4.6.ICC 11 (Intel Compiler 11) surprisingly has trouble compiling it well.
These are for pre-FMA processors. In order to achieve peak FLOPS on Intel Haswell and AMD Bulld...
Returning from a finally block in Java
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A simple Groovy Test:
public class Instance {
List<String> runningThreads = new ArrayList<String>()
void test(boolean returnInFinally) {
println "\ntest(returnInFinally: $returnInFinally)"
println "---------------...
Processing $http response in service
...then function, which also returns a promise
var promise = $http.get('test.json').then(function (response) {
// The then function here is an opportunity to modify the response
console.log(response);
// The return value gets picked up by the then in the controller.
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Can Mockito stub a method without regard to the argument?
I'm trying to test some legacy code, using Mockito.
4 Answers
4
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Regular expression to get a string between two strings in Javascript
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When I test this, the provided Regex expression includes both "cow" and "milk"...
– TheCascadian
Apr 27 '18 at 3:39
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How do you detect Credit card type based on number?
...1|1800|35\d{3})\d{11}$/
}
for(var key in re) {
if(re[key].test(number)) {
return key
}
}
}
Unit test:
describe('CreditCard', function() {
describe('#detectCardType', function() {
var cards = {
'8800000000000000': 'UNIONPAY',
...