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How do I check for C++11 support?
...ive page is at https://isocpp.org/std/standing-documents/sd-6-sg10-feature-test-recommendations
In summary, each feature has a standard macro defined that you can check with #ifdef. For example, to check for user defined literals, you can use
#ifdef __cpp_user_defined_literals
...
How do I iterate through children elements of a div using jQuery?
...selector to children
$('#mydiv').children('input').each(function () {
alert(this.value); // "this" is the current element in the loop
});
You could also just use the immediate child selector:
$('#mydiv > input').each(function () { /* ... */ });
...
Test if lists share any items in python
...
Short answer: use not set(a).isdisjoint(b), it's generally the fastest.
There are four common ways to test if two lists a and b share any items. The first option is to convert both to sets and check their intersection, as such:
bool(set(a) & set(b))
Because sets are stored using a h...
How to check a string for specific characters?
...nformation on strings, including about using the in operator for substring tests.
Update: This does the same job as my above suggestion with less repetition:
# When looking for single characters, this checks for any of the characters...
# ...since strings are collections of characters
any(i in '&l...
How to solve Operator '!=' cannot be applied to operands of type 'T' and 'T' [duplicate]
...
using System.Collections.Generic;
public class Test<T>
{
public T Value
{
get => _Value;
set
{
// operator== is undefined for generic T; EqualityComparer solves this
if (!EqualityComparer<T>.Defaul...
Symfony 2 EntityManager injection in service
...anymore. According to the documentation You would pass in:
services:
test.common.userservice:
class: Test\CommonBundle\Services\UserService
arguments: [ "@doctrine.orm.entity_manager" ]
And then they would be available in the order they were listed via the arguments (if ther...
How do I check if a string is a number (float)?
...but I think it's very close): it is more usual to put only the part being "tested" in the try clause, so I would put the return True in an else clause of the try. One of the reasons is that with the code in the question, if I had to review it, I would have to check that the second statement in the ...
jQuery Tips and Tricks
...ght() > 100;
}
});
$(".box:over100pixels").click(function ()
{
alert("The element you clicked is over 100 pixels height");
});
share
edited Mar 23 '11 at 18:51
...
Why should I use a semicolon after every function in javascript?
...le, you will get completely undesired results:
var myFn = function () {
alert("Surprise!");
} // <-- No semicolon!
(function () {
//...
})();
The first function will be executed immediately, because the parentheses surrounding the second one, will be interpreted as the Arguments of a func...
How can we match a^n b^n with Java regex?
...ge used to develop the solution will be PHP for its conciseness. The final test once the pattern is finalized will be done in Java.
Step 1: Lookahead for assertion
Let's start with a simpler problem: we want to match a+ at the beginning of a string, but only if it's followed immediately by b+. We c...