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Returning value from called function in a shell script
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A Bash function can't return a string directly like you want it to. You can do three things:
Echo a string
Return an exit status, which is a number, not a string
Share a variable
This is also true for some other shells.
Here's how to do each of those options:
1. Echo strings
loc...
Where do I put image files, css, js, etc. in Codeigniter?
Where is it acceptable to put css folders and image file folders? I was thinking inside the view folder? However the controller always reroutes the path to the base url so I have to specify the path in the .html file to where it sits, which is redundant.
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Ruby on Rails: Where to define global constants?
I'm just getting started with my first Ruby on Rails webapp. I've got a bunch of different models, views, controllers, and so on.
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Errors: “INSERT EXEC statement cannot be nested.” and “Cannot use the ROLLBACK statement within an I
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broken link OR unresponsive site.
– SouravA
Mar 8 '18 at 15:13
6
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How to debug apk signed for release?
...phone. I would like to debug this release apk (by means of Eclipse) whilst it is running on my phone. I have done this before (and remember it being with one of the Android development tools; perhaps Dalvik Debug Monitor) but unfortunately cannot remember how to do it and have been unable to find an...
Can you remove elements from a std::list while iterating through it?
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You have to increment the iterator first (with i++) and then remove the previous element (e.g., by using the returned value from i++). You can change the code to a while loop like so:
std::list<item*>::iterator i = items.begin();
while (i != i...
What's the best way to parse command line arguments? [closed]
... more information.
As other people pointed out, you are better off going with optparse over getopt. getopt is pretty much a one-to-one mapping of the standard getopt(3) C library functions, and not very easy to use.
optparse, while being a bit more verbose, is much better structured and simpler t...
Python's many ways of string formatting — are the older ones (going to be) deprecated?
...% strings, there's no surviving plan to ever deprecate the latter.
In commit Issue #14123: Explicitly mention that old style % string formatting has caveats but is not going away any time soon., inspired by issue Indicate that there are no current plans to deprecate printf-style formatting, the doc...
What's the difference between ContentControl and ContentPresenter?
...control templates to display content.
ContentControl, when used directly (it's supposed to be used as a base class), has a control template that uses ContentPresenter to display it's content.
My rules of thumb (not applicable in every case, use your judgment):
Inside ControlTemplate use ContentP...
iOS Detection of Screenshot?
... app Snapchat , on the App Store, is an app that lets you share pictures with a self-destruct on them. You can only view the pics for X seconds. If you attempt to take a screenshot while the picture is showing using the home-power key combo, it will tell the sender you tried to take a screenshot.
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