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What is the difference between a mutable and immutable string in C#?
..."cannot change" respectively. The meaning of the words is the same in the IT context; i.e.
a mutable string can be changed, and
an immutable string cannot be changed.
The meanings of these words are the same in C# / .NET as in other programming languages / environments, though (obviously) the n...
How to merge lists into a list of tuples?
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edited Mar 5 '19 at 16:27
mrgloom
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Is it possible to get the non-enumerable inherited property names of an object?
...yNames can get you non-enumerable properties, you can use that and combine it with walking up the prototype chain.
function getAllProperties(obj){
var allProps = []
, curr = obj
do{
var props = Object.getOwnPropertyNames(curr)
props.forEach(function(prop){
...
How to step through Python code to help debug issues?
...es to remember are:
b: set a breakpoint
c: continue debugging until you hit a breakpoint
s: step through the code
n: to go to next line of code
l: list source code for the current file (default: 11 lines including the line being executed)
u: navigate up a stack frame
d: navigate down a stack frame...
If table exists drop table then create it, if it does not exist just create it
...e`; before your CREATE TABLE statement.
That statement drops the table if it exists but will not throw an error if it does not.
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Access multiple elements of list knowing their index
... index. Let say I would like to create a new list, which contains element with index 1, 2, 5, from given list [-2, 1, 5, 3, 8, 5, 6]. What I did is:
...
Python list subtraction operation
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Use a list comprehension:
[item for item in x if item not in y]
If you want to use the - infix syntax, you can just do:
class MyList(list):
def __init__(self, *args):
super(MyList, self).__init__(args)
def __sub__(self, other):
...
Timeout a command in bash without unnecessary delay
...cripts/timeout3
#!/bin/bash
#
# The Bash shell script executes a command with a time-out.
# Upon time-out expiration SIGTERM (15) is sent to the process. If the signal
# is blocked, then the subsequent SIGKILL (9) terminates it.
#
# Based on the Bash documentation example.
# Hello Chet,
# please f...
Can I use multiple versions of jQuery on the same page?
...
Yes, it's doable due to jQuery's noconflict mode. http://blog.nemikor.com/2009/10/03/using-multiple-versions-of-jquery/
<!-- load jQuery 1.1.3 -->
<script type="text/javascript" src="http://example.com/jquery-1.1.3.js"&g...
How do I pass extra arguments to a Python decorator?
...
Since you are calling the decorator like a function, it needs to return another function which is the actual decorator:
def my_decorator(param):
def actual_decorator(func):
print("Decorating function {}, with parameter {}".format(func.__name__, param))
retu...