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Linux: copy and create destination dir if it does not exist
...ly an option to cp) that creates the destination directory if it does not exist.
21 Answers
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What is a segmentation fault?
... results in a segfault
Dangling pointer points to a thing that does not exist any more, like here:
char *p = NULL;
{
char c;
p = &c;
}
// Now p is dangling
The pointer p dangles because it points to character variable c that ceased to exist after the block ended. And when you try to...
What is __init__.py for?
...and namespace packages. Regular packages are traditional packages as they existed in Python 3.2 and earlier. A regular package is typically implemented as a directory containing an __init__.py file. When a regular package is imported, this __init__.py file is implicitly executed, and the objects it ...
How to run an EXE file in PowerShell with parameters with spaces and quotes
...t evaluates the string, that is, it typically echos it to the screen, for example:
PS> "Hello World"
Hello World
If you want PowerShell to interpret the string as a command name then use the call operator (&) like so:
PS> & 'C:\Program Files\IIS\Microsoft Web Deploy\msdeploy.exe'
...
Getting the name of a variable as a string
...of(foo)
# fooname == 'foo'
Note that this is working in this case as you expected:
n_jobs = <original_value>
d = n_jobs
nameof(d) # will return d, instead of n_jobs
# nameof only works directly with the variable
I am the author of this package. Please let me know if you have any questions o...
Doing a cleanup action just before Node.js exits
I want to tell Node.js to always do something just before it exits, for whatever reason — Ctrl + C , an exception, or any other reason.
...
difference between css height : 100% vs height : auto
...ement height will depend upon the height of its children.
Consider these examples:
height: 100%
<div style="height: 50px">
<div id="innerDiv" style="height: 100%">
</div>
</div>
#innerDiv is going to have height: 50px
height: auto
<div style="height: 50px"&g...
Flask-SQLAlchemy how to delete all rows in a single table
....User.query.delete()
From the docs: Returns the number of rows deleted, excluding any cascades.
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Redirect all to index.php using htaccess
...e that your .htaccess file is in your document root (the same place as index.php) or it'll only affect the sub-folder it's in (and any sub-folders within that - recursively).
Next make a slight change to your rule so it looks something like:
RewriteEngine on
RewriteCond %{REQUEST_FILENAME} !-f
Rew...
What is your most productive shortcut with Vim?
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