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Is an index needed for a primary key in SQLite?
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150
It does it for you.
INTEGER PRIMARY KEY columns aside, both UNIQUE and PRIMARY KEY
const...
Why is Class.newInstance() “evil”?
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81
The Java API documentation explains why (http://java.sun.com/javase/6/docs/api/java/lang/Class.h...
SQL Server - stop or break execution of a SQL script
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The raiserror method
raiserror('Oh no a fatal error', 20, -1) with log
This will terminate the connection, thereby stopping the rest of the script from running.
Note that both severity level 20 or higher and the WITH LOG option are necessary for it to work this way.
This even wor...
How to find a parent with a known class in jQuery?
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501
Assuming that this is .d, you can write
$(this).closest('.a');
The closest method returns the...
UUID max character length
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174
Section 3 of RFC4122 provides the formal definition of UUID string representations. It's 36 c...
Building and running app via Gradle and Android Studio is slower than via Eclipse
I have a multi-project (~10 modules) of which building takes about 20-30 seconds each time. When I press Run in Android Studio, I have to wait every time to rebuild the app, which is extremely slow.
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What are the differences between local branch, local tracking branch, remote branch and remote track
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124
A local branch is a branch that only you (the local user) can see. It exists only on your loca...
Passing argument to alias in bash [duplicate]
...on without needing to be or able to be passed as explicit arguments (e.g. $1).
$ alias foo='/path/to/bar'
$ foo some args
will get expanded to
$ /path/to/bar some args
If you want to use explicit arguments, you'll need to use a function
$ foo () { /path/to/bar "$@" fixed args; }
$ foo abc 123...
What does @: (at symbol colon) mean in a Makefile?
...hat you've got an obscure combination of two different syntaxes. The make(1) syntax is the use of an action starting with @, which is simply not to echo the command. So a rule like
always:
@echo this always happens
won't emit
echo this always happens
this always happens
Now, th...