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What is the 'cls' variable used for in Python classes?
...lass method. Check this reference for further details.
EDIT: As clarified by Adrien, it's a convention. You can actually use anything but cls and self are used (PEP8).
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Nested or Inner Class in PHP
...B needs access to
members of A that would otherwise be declared private. By hiding class
B within class A, A's members can be declared private and B can access
them. In addition, B itself can be hidden from the outside world.
Nested classes can lead to more readable and maintainable code.
...
Confused about stdin, stdout and stderr?
...That's about as dumbed-down as I can make it :-)
Of course, that's mostly by convention. There's nothing stopping you from writing your error information to standard output if you wish. You can even close the three file handles totally and open your own files for I/O.
When your process starts, it ...
Immutable vs Unmodifiable collection
.... It just makes sure that the collection itself cannot be altered (and not by wrapping, but by copying). The objects which are present in the collection can still be altered, and no guarantee is given on those.
– Hiery Nomus
Jan 17 '12 at 9:44
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Automatically enter SSH password with script
...r password from commands like ps -aux, you shouldn't normally run commands by typing your password because other users on the same computer may be able to see the password by running ps -aux. if practical, you also want to use public key authentication instead, as mentioned in the other answer. th...
AngularJS UI Router - change url without reloading state
...alse . For example:
$state.go('.detail', {id: newId})
can be replaced by
$state.transitionTo('.detail', {id: newId}, {
location: true,
inherit: true,
relative: $state.$current,
notify: false
})
Edit: As suggested by fracz it can simply be:
$state.go('.detail', {id: newId}, ...
Try/Catch block in PHP not catching Exception
...n another language like C# (Csharp).
If you do this:
try{
//division by zero
$number = 5/0;
}
catch(Exception $ex){
echo 'Got it!';
}
You will not see the 'Got it!' message never. Why? It's just because PHP always needs an Exception to be "Thrown". You need to set your own error hand...
How do I execute a bash script in Terminal?
...
Change your directory to where script is located by using cd command
Then type
bash program-name.sh
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How do you clear the SQL Server transaction log?
...e log file will grow to the same size again, not very much is accomplished by shrinking it temporarily. Now, depending on the recovery goals of your database, these are the actions you should take.
First, take a full backup
Never make any changes to your database without ensuring you can restore i...
How do you take a git diff file, and apply it to a local branch that is a copy of the same repositor
I have a .diff file created by a coworker, and would like to apply the changes listed in that diff file to my local branch of the exact same repository. I do not have access to that worker's pc or branch that was used to generate this diff file.
...