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Why switch is faster than if
... between JVM's LookupSwitch and TableSwitch?
So as far as which one is fastest, use this approach:
If you have 3 or more cases whose values are consecutive or nearly consecutive, always use a switch.
If you have 2 cases, use an if statement.
For any other situation, switch is most likely faster, ...
Why does Lua have no “continue” statement?
... a=1 --change outer a
end
local a=f() -- inner a
until a==0 -- test inner a
The declaration of local a inside the loop body masks the outer variable named a, and the scope of that local extends across the condition of the until statement so the condition is testing the innermost a.
If...
How do I speed up the gwt compiler?
... for IE and FF only. If you know you are using only a specific browser for testing, you can use this little hack.
Another option: if you are using several locales, and again using only one for testing, you can comment them all out so that GWT will use the default locale, this shaves off some additi...
Which method performs better: .Any() vs .Count() > 0?
...n<T>, IList<T>, List<T>, etc) - then this will be the fastest option, since it doesn't need to go through the GetEnumerator()/MoveNext()/Dispose() sequence required by Any() to check for a non-empty IEnumerable<T> sequence.
For just IEnumerable<T>, then Any() will gene...
PHPUnit: assert two arrays are equal, but order of elements not important
...th a new assertion method. But here's an idea for a simpler way for now. Untested code, please verify:
Somewhere in your app:
/**
* Determine if two associative arrays are similar
*
* Both arrays must have the same indexes with identical values
* without respect to key ordering
*
* @param...
JSON.net: how to deserialize without using the default constructor?
...; method.Invoke(null, a);
}
}
I'm using it like this.
public struct Test {
public readonly int A;
public readonly string B;
public Test(int a, string b) {
A = a;
B = b;
}
}
var json = JsonConvert.SerializeObject(new Test(1, "Test"), new JsonSerializerSettings {
ContractRes...
How do I compile C++ with Clang?
...lang++. For example, the following works for me:
clang++ -Wall -std=c++11 test.cc -o test
If compiled correctly, it will produce the executable file test, and you can run the file by using ./test.
Or you can just use clang++ test.cc to compile the program. It will produce a default executable fi...
How to split one string into multiple strings separated by at least one space in bash shell?
...or start with a dash. For example:
text="This is a test"
set -- junk $text
shift
for word; do
echo "[$word]"
done
This prints
[This]
[is]
[a]
[test]
share
|
improve th...
How to replace an entire line in a text file by line number
...
Not the greatest, but this should work:
sed -i 'Ns/.*/replacement-line/' file.txt
where N should be replaced by your target line number. This replaces the line in the original file. To save the changed text in a different file, drop t...
Can't choose class as main class in IntelliJ
...ded a bunch of files in a nested folder hierarchy. Many of these files are tests and include the main method, so I should be able to run them. However I cannot figure out how to do this.
...