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Check if an element is present in an array [duplicate]
...
ECMAScript 2016 incorporates an includes() method for arrays that specifically solves the problem, and so is now the preferred method.
[1, 2, 3].includes(2); // true
[1, 2, 3].includes(4); // false
[1, 2, 3].includes(1, 2); // false (second parame...
Synchronization vs Lock
...ck,
if some other thread is holding the
lock give up. This all is included
aside from the simple lock.
Intrinsic locking only offers simple
locking
Style. If both 1 and 2 do not fall
into categories of what you are
concerned with most people,
including myself, woul...
How do I strip all spaces out of a string in PHP? [duplicate]
...r_replace:
$string = str_replace(' ', '', $string);
For all whitespace (including tabs and line ends), use preg_replace:
$string = preg_replace('/\s+/', '', $string);
(From here).
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impr...
Using `textField:shouldChangeCharactersInRange:`, how do I get the text including the current typed
I'm using the code below to try and have textField2 's text content get updated to match textField1 's whenever the user types in textField1 .
...
How to overload std::swap()
...s namespace exp instead of namespace std.
// simulate <algorithm>
#include <cstdio>
namespace exp
{
template <class T>
void
swap(T& x, T& y)
{
printf("generic exp::swap\n");
T tmp = x;
x = y;
y = tmp;
}
template &...
How do I run a node.js app as a background service?
...s is taken from How we deploy node apps on Linux, 2018 edition, which also includes commands to generate an AWS/DigitalOcean/Azure CloudConfig to build Linux/node servers (including the .service file).
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How do I auto-hide placeholder text upon focus using css or jquery?
...placeholder text out. It works for any element that can use placeholders, including textarea and input tags.
::-webkit-input-placeholder { opacity: 1; -webkit-transition: opacity .5s; transition: opacity .5s; } /* Chrome <=56, Safari < 10 */
:-moz-placeholder { opacity: 1; -moz-transitio...
Favicon: .ico or .png / correct tags? [duplicate]
...
Is it alright to include both and let the browser decide which to use?
– ewall
May 27 '11 at 18:58
11
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Differences between distribute, distutils, setuptools and distutils2?
...ols:
distutils is still the standard tool for packaging in Python. It is included in the standard library (Python 2 and Python 3). It is useful for simple Python distributions, but lacks features. It introduces the distutils Python package that can be imported in your setup.py script.
Official d...
What is x after “x = x++”?
...e operation,)
the RHS of an assignment expression is completely evaluated (including any increments, decrements and/or other side-effects) before the value is assigned to the LHS.
Note that unlike C and C++, the order of evaluation of an expression in Java is totally specified and there is no room...