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Setting Windows PowerShell environment variables
...nt variable affects only the old command prompt. PowerShell seems to have different environment settings. How do I change the environment variables for PowerShell (v1)?
...
Automating the InvokeRequired code pattern
...
Lee's approach can be simplified further
public static void InvokeIfRequired(this Control control, MethodInvoker action)
{
// See Update 2 for edits Mike de Klerk suggests to insert here.
if (control.InvokeRequired) {
control.Invoke(a...
Angularjs if-then-else construction in expression
Can I somehow use if-then-else construction (ternary-operator) in angularjs expression, for example I have function $scope.isExists(item) that has to return bool value.
I want something like this,
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How do I negate a condition in PowerShell?
...
You almost had it with Not. It should be:
if (-Not (Test-Path C:\Code)) {
write "it doesn't exist!"
}
You can also use !: if (!(Test-Path C:\Code)){}
Just for fun, you could also use bitwise exclusive or, though it's not the most readable/understandable metho...
Doing something before program exit
...e atexit module:
http://docs.python.org/library/atexit.html
For example, if I wanted to print a message when my application was terminating:
import atexit
def exit_handler():
print 'My application is ending!'
atexit.register(exit_handler)
Just be aware that this works great for normal ter...
How to create a GUID/UUID in Python
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@JayPatel Does shortuuid not work for Python 3? If not, please file a bug.
– Stavros Korokithakis
Aug 22 '16 at 2:56
1
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How should one use std::optional?
... //try to parse an int from the given string,
//and return "nothing" if you fail
}
The same thing might be accomplished with a reference argument instead (as in the following signature), but using std::optional makes the signature and usage nicer.
bool try_parse_int(std::string s, int& ...
Long Press in JavaScript?
...ad steady and not moving 1px is quite hard! You need to apply a threshold (if mouse hasn't moved 10px) etc. Gets complicated quite quickly!
– Ian
Feb 18 '15 at 12:44
6
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Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)
... "127.0.0.1" the TCP/IP connector is used. You could try using "127.0.0.1" if the socket connector is not enabled/working.
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Check whether an array is empty [duplicate]
... quick workaround you can do following:
$errors = array_filter($errors);
if (!empty($errors)) {
}
array_filter() function's default behavior will remove all values from array which are equal to null, 0, '' or false.
Otherwise in your particular case empty() construct will always return true if ...