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Why are trailing commas allowed in a list?
...
It helps to eliminate a certain kind of bug. It's sometimes clearer to write lists on multiple lines.
But in, later maintenace you may want to rearrange the items.
l1 = [
1,
2,
3,
4,
5
]
# Now you want to rearrange
l1 = [
1,
...
How to get the last character of a string in a shell?
...rreal, quoting variables is important, but because I read this post like 5 times before finding a simpler approach to the question at hand in the comments...
str='abcd/'
echo "${str: -1}"
Output: /
str='abcd*'
echo "${str: -1}"
Output: *
Thanks to everyone who participated in this above; I've...
Git authentication fails after enabling 2FA
...thub.com/owner/repo.git
You can persist your password by run this for one time only:
$ git config credential.helper store
and then your future git password(s) will be stored in ~/.git-credentials, in plaintext, using the format https://user:PlaintextPassword@example.com.
Storing password(s) in p...
The function to show current file's full path in mini buffer
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I have the following code already in use for a long time.
It copies the full file path to the kill ring when I press the middle mouse button on the buffer name in the mode-line. It copies just the buffer name to the kill-ring when I press shift-mouse-2 on the buffer-name in th...
Programmatically retrieve memory usage on iPhone
I'm trying to retrieve the amount of memory my iPhone app is using at anytime, programmatically. Yes I'm aware about ObjectAlloc/Leaks. I'm not interested in those, only to know if it's possible to write some code and get the amount of bytes being used and report it via NSLog.
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Is the practice of returning a C++ reference variable evil?
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In general, returning a reference is perfectly normal and happens all the time.
If you mean:
int& getInt() {
int i;
return i; // DON'T DO THIS.
}
That is all sorts of evil. The stack-allocated i will go away and you are referring to nothing. This is also evil:
int& getInt() {
...
Remove all special characters, punctuation and spaces from string
... the provided answers by finding out which executes in the least amount of time, so I went through and checked some of the proposed answers with timeit against two of the example strings:
string1 = 'Special $#! characters spaces 888323'
string2 = 'how much for the maple syrup? $20.99? That s ric...
How to get the changes on a branch in Git
What is the best way to get a log of commits on a branch since the time it was branched from the current branch? My solution so far is:
...
VS 2010 Test Runner error “The agent process was stopped while the test was running.”
...udio 2010, I have a number of unit tests. When I run multiple tests at one time using test lists, I sometimes reveive the following error for one or more of the tests:
...
My docker container has no internet
... Docker basically copies the host's /etc/resolv.conf to the container everytime a container is started. So if the host's /etc/resolv.conf is wrong, then so will the docker container.
If you have found that the host's /etc/resolv.conf is wrong, then you have 2 options:
Hardcode the DNS server in d...