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What is the difference between exit and return? [duplicate]
... _Exit from #include <stdlib.h>) terminates the process immediately.
Now there are also issues that are specific to C++.
C++ performs much more work than C when it is exiting from functions (return-ing). Specifically it calls destructors of local objects going out of scope. In most cases progr...
Passing command line arguments to R CMD BATCH
... R CMD BATCH my_script.R from a terminal to execute an R script. I am now at the point where I would like to pass an argument to the command, but am having some issues getting it working. If I do R CMD BATCH my_script.R blabla then blabla becomes the output file, rather than being interpre...
Reverting a single file to a previous version in git [duplicate]
...work tree, along with some metadata (e.g. commit message). So, we have to know which commit has the version of the file we want. Once we know that, we'll need to make a new commit reverting the file to that state. (We can't just muck around with history, because we've already pushed this content, an...
Alter column, add default constraint
...s the drop constraint query too.if someone had added getdate() earlier and now he needs to alter it to getutcdate(). he might get some help through this answer. @RalfFriedl
– Abhijit Poojari
Jun 22 '19 at 10:19
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Remove the complete styling of an HTML button/submit
...s "Internet Explorer," but for those interested in other browsers, you can now use all: unset on buttons to unstyle them.
It doesn't work in IE or Edge 18, but it's well-supported everywhere else.
https://caniuse.com/#feat=css-all
Safari color warning: Setting the text color of the button after usin...
MYSQL OR vs IN performance
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I needed to know this for sure, so I benchmarked both methods. I consistenly found IN to be much faster than using OR.
Do not believe people who give their "opinion", science is all about testing and evidence.
I ran a loop of 1000x the ...
sed whole word search and replace
...nside sed for matching whole words
\bmyWord\b
\<myWord\>
Hear me now and believe me later, this ugly syntax is what you need to use:
/[[:<:]]myWord[[:>:]]/
So, for example, to replace mint with minty for whole words only:
sed "s/[[:<:]]mint[[:>:]]/minty/g"
Source: re_fo...
Can we append to a {% block %} rather than overwrite?
...it contents of templates which are before or after the point where you are now. Also I wanted duplicates to be removed. As a result I wrote django-sekizai, which does exactly that. It's similar to blocks, just instead of inheriting them, you extend them.
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What is the difference between pip and conda?
I know pip is a package manager for python packages. However, I saw the installation on IPython's website use conda to install IPython.
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Most common C# bitwise operations on enums
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In .NET 4 you can now write:
flags.HasFlag(FlagsEnum.Bit4)
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