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How to mkdir only if a directory does not already exist?
... to use the mkdir command to create a directory. But the directory may already exist, in which case I do not want to do anything. So I want to either test to see that the directory does not exist, or suppress the "File exists" error that mkdir throws when it tries to create an existing directory...
Why is the .bss segment required?
...ems need to have values before the program begins running.
When you’re reading data from a disk file, for example, you need to have a
place for the data to go after it comes in from disk. Data buffers like that are
defined in the .bss section of your program. You set aside some number of
b...
How to correctly close a feature branch in Mercurial?
...it --close-branch
hg up default
hg merge myBranch
Hope this helps future readers.
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Batch script: how to check for admin rights
...wo cases an IF and ELSE case, and some ascii art to ensure people actually read it. :)
Minimal Version
Rushyo posted this solution here: How to detect if CMD is running as Administrator/has elevated privileges?
NET SESSION >nul 2>&1
IF %ERRORLEVEL% EQU 0 (
ECHO Administrator PRIVIL...
What's the better (cleaner) way to ignore output in PowerShell? [closed]
...g but Out-Null due to overhead. The next important thing, to me, would be readability. I kind of like redirecting to $null and setting equal to $null myself. I use to prefer casting to [Void], but that may not be as understandable when glancing at code or for new users.
I guess I slightly prefer...
How to optimize for-comprehensions and loops in Scala?
...ance in simple cases:
http://groups.google.com/group/scala-user/browse_thread/thread/86adb44d72ef4498
http://groups.google.com/group/scala-language/browse_thread/thread/94740a10205dddd2
Here is the issue in the bug tracker:
https://issues.scala-lang.org/browse/SI-4633
Update 5/28:
As a short ...
Avoiding SQL injection without parameters
... Why are you trying to re-implement something that's built in? it's there, readily available, easy to use and already debugged on a global scale. If future bugs are found in it, they'll be fixed and available to everyone very quickly without you having to do anything.
2) What processes are in place...
Typical AngularJS workflow and project structure (with Python Flask)
...st for development:
return make_response(open('templates/index.html').read())
Afterwards, build out the AngularJS part of your app, modifying the app structure so that it looks like this:
app
|-- app.py
|-- static
|-- css
|-- img
|-- js
|-- app.js, controllers.js, etc.
...
What is the preferred/idiomatic way to insert into a map?
...nserted key
The insert member function will have no effect if the key is already present in the map and, although it is often forgotten, returns an std::pair<iterator, bool> which can be of interest (most notably to determine if insertion has actually been done).
From all the listed possibil...
What is the difference between customErrors and httpErrors?
...m.webServer>
Reference: HTTP Errors (www.iis.net)
for more details, read the www.iis.net link above
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