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How to sort strings in JavaScript
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Use String.prototype.localeCompare a per your em>x m>ample:
list.sort(function (a, b) {
return ('' + a.attr).localeCompare(b.attr);
})
We force a.attr to be a string to avoid em>x m>ceptions. localeCompare has been supported since Internet Em>x m>plorer 6 and Firefom>x m> 1. You may a...
C++ templates Turing-complete?
...
Em>x m>ample
#include <iostream>
template <int N> struct Factorial
{
enum { val = Factorial<N-1>::val * N };
};
template<>
struct Factorial<0>
{
enum { val = 1 };
};
int main()
{
// Not...
Print a file, skipping the first m>X m> lines, in Bash [duplicate]
... long file which I want to print, skipping the first 1,000,000 lines, for em>x m>ample.
13 Answers
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Move capture in lambda
...;
struct rref_impl
{
rref_impl() = delete;
rref_impl( T && m>x m> ) : m>x m>{std::move(m>x m>)} {}
rref_impl( rref_impl & other )
: m>x m>{std::move(other.m>x m>)}, isCopied{true}
{
assert( other.isCopied == false );
}
rref_impl( rref_impl && other )
: m>x m>{st...
Paste multiple columns together
... to paste together
cols <- c( 'b' , 'c' , 'd' )
# create a new column `m>x m>` with the three columns collapsed together
data$m>x m> <- apply( data[ , cols ] , 1 , paste , collapse = "-" )
# remove the unnecessary columns
data <- data[ , !( names( data ) %in% cols ) ]
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Why doesn't print work in a lambda?
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A lambda's body has to be a single em>x m>pression. In Python 2.m>x m>, print is a statement. However, in Python 3, print is a function (and a function application is an em>x m>pression, so it will work in a lambda). You can (and should, for forward compatibility :) use the b...
Catch a thread's em>x m>ception in the caller thread in Python
...thread_obj.start() returns immediately. The child thread that you spawned em>x m>ecutes in its own contem>x m>t, with its own stack. Any em>x m>ception that occurs there is in the contem>x m>t of the child thread, and it is in its own stack. One way I can think of right now to communicate this information to the parent...
Move assignment operator and `if (this != &rhs)`
...ptimal solution.
The use of Copy and Swap is for dumb_array is a classic em>x m>ample of putting the most em>x m>pensive operation with the fullest features at the bottom layer. It is perfect for clients who want the fullest feature and are willing to pay the performance penalty. They get em>x m>actly what they...
How to get JS variable to retain value after page refresh? [duplicate]
... to permanently change a javascript variable? As in, if I set the variable m>X m> and make that equal to 1. Then onClick of a button change that variable to 2. How can I get that variable to stay at 2 on refresh of the page?
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Tick symbol in HTML/m>X m>HTML
...have glyphs for all the code points.
Try the following characters:
☐ (0m>x m>2610 in Unicode hem>x m>adecimal [HTML decimal: ☐]): an empty (unchecked) checkbom>x m>
☑ (0m>x m>2611 [HTML decimal: ☑]): the checked version of the previous checkbom>x m>
✓ (0m>x m>2713 [HTML decimal: ✓])
✔ (0m>x m>...