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In a Bash script, how can I exit the entire script if a certain condition occurs?
...tement will result in a complain (error message "return: can only `return' from a function or sourced script").
If exit <x> is used instead, when the script is invoked with source, it will result in exiting the shell that started the script, but an executable script will just terminate, as ex...
Truncate a string straight JavaScript
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If you want a substring starting from 0, then the substr function will do the exact same thing with 3 less chars ;)
– jackocnr
Sep 21 '14 at 18:55
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DynamoDB vs MongoDB NoSQL [closed]
...ing to figure it out what can I use for a future project, we plan to store from about 500k records per month in the first year and maybe more for the next years this is a vertical application so there's no need to use a database for this, that's the reason why I decided to choose a noSQL data storag...
Facebook Android Generate Key Hash
...generate key hash you need to follow some easy steps.
1) Download Openssl from: here.
2) Make a openssl folder in C drive
3) Extract Zip files into this openssl folder created in C Drive.
4) Copy the File debug.keystore from .android folder in my case (C:\Users\SYSTEM.android) and paste into JD...
Detect enter press in JTextField
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-1 :( KeyListeners are way too low level from Swing's perspective. Use the API which is intended to be used with Swing :-)
– nIcE cOw
Aug 20 '13 at 5:47
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Type definition in object literal in TypeScript
...de Pattern as Alternative)
After many years of using const and benefiting from more functional code, I would recommend against using the below in most cases. (When building objects, forcing the type system into a specific type instead of letting it infer types is often an indication that something ...
When to use self over $this?
...e Y, it calls Y::foo(). But with self::foo(), X::foo() is always called.
From http://www.phpbuilder.com/board/showthread.php?t=10354489:
By http://board.phpbuilder.com/member.php?145249-laserlight
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Git file permissions on Windows
...ions in Git and I'm still a bit confused. I've got a repo on GitHub forked from another. Post merge, they should be identical. However:
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How to stop EditText from gaining focus at Activity startup in Android
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Excellent answers from Luc and Mark however a good code sample is missing. Adding the tag android:focusableInTouchMode="true" and android:focusable="true" to parent layout (e.g. LinearLayout or ConstraintLayout) like the following example will...
Matching a space in regex
...preceding or following spaces.
For PHP specifically, this page may help.
From your edit, it appears you want to remove all non valid characters The start of this is (note the space inside the regex):
$newtag = preg_replace ("/[^a-zA-Z0-9 ]/", "", $tag);
# ^ spac...