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What is the effect of extern “C” in C++?
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extern "C" makes a function-name in C++ have C linkage (compiler does not mangle the name) so that client C code can link to (use) your function using a C compatible header file that contains just the declaration of your function. Your function...
Check if a file exists with wildcard in shell script [duplicate]
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You should add unsetopt nomatch if zsh reports errors.
– Chih-Hsuan Yen
Jan 3 '15 at 9:38
7
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Why are there two kinds of functions in Elixir?
I'm learning Elixir and wonder why it has two types of function definitions:
8 Answers
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Javascript reduce on array of objects
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TL;DR, set the initial value
Using destructuring
arr.reduce( ( sum, { x } ) => sum + x , 0)
Without destructuring
arr.reduce( ( sum , cur ) => sum + cur.x , 0)
With Typescript
arr.reduce( ( sum, { x } : { x: number } ) => s...
How to run the sftp command with a password from Bash script?
...istory.
A more secure alternative which is available since LFTP 4.5.0 is setting the LFTP_PASSWORDenvironment variable and executing lftp with --env-password. Here's a full example:
LFTP_PASSWORD="just_an_example"
lftp --env-password sftp://user@host -e "put local-file.name; bye"
LFTP also inc...
Efficient Algorithm for Bit Reversal (from MSB->LSB to LSB->MSB) in C
What is the most efficient algorithm to achieve the following:
27 Answers
27
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How can I remove a commit on GitHub? [duplicate]
...se see alternative to git rebase -i in the comments below—
git reset --soft HEAD^
First, remove the commit on your local repository. You can do this using git rebase -i. For example, if it's your last commit, you can do git rebase -i HEAD~2 and delete the second line within the editor window that...
Is there a printf converter to print in binary format?
I can print with printf as a hex or octal number. Is there a format tag to print as binary, or arbitrary base?
52 Answer...
Force “git push” to overwrite remote files
...remote> and <branch> will force push all local branches that have set --set-upstream.
Just be warned, if other people are sharing this repository their revision history will conflict with the new one. And if they have any local commits after the point of change they will become invalid.
U...
How to fix corrupted git repository?
...o is corrupted, and you know the url to the remote, you can use this to re-set your .git to match the remote (replacing ${url} with the remote url):
mv -v .git .git_old && # remove old git
git init && # initialise new repo
git remote add origin "${ur...