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call a static method inside a class?
...ic method in the same class, you have to use self::. So to avoid potential errors (and strict warnings) it is better to use self.
– jeroen
Mar 31 '12 at 13:00
1
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What's the difference between commit() and apply() in SharedPreferences
...nd apply() method from shared preference. When I use AVD 2.3 it shows no error, but when I run the code in AVD 2.1, apply() method shows error.
...
IntelliJ and Tomcat.. Howto..?
...cts correctly. I found no way to generate a war that won't result in a 404 error because index.gsp isn't handled by grails. Could you please add some instructions regarding facets and artifacts or advise under stackoverflow.com/questions/20053061/… - thanks.
– HAL 9000
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Fastest way to determine if record exists
...know when you'll have to go back. Aliasing helps preventing stupid runtime errors; for example, unique column name that didn't need an alias is not unique any more because somebody created a column of same name in another, joined table.
– Nikola Markovinović
A...
How to debug PDO database queries?
...ated SQL queries in PHP by concatenating strings. If I got database syntax error, I could just echo the final SQL query string, try it myself on the database, and tweak it until I fixed the error, then put that back into the code.
...
Why do loggers recommend using a logger per class?
...ImportantLogs" />
<logger name="StupidLibrary.*" minlevel="Error" writeTo="StupidLibraryLogs" />
<!-- Hide other messages from StupidLibrary -->
<logger name="StupidLibrary.*" final="true" />
<!-- Log all but hidden messages -->
<logger name="*" writeTo="Al...
How to check version of python modules?
...nt call last):
File "<string>", line 1, in <module>
AttributeError: 'module' object has no attribute '__version__'
Lastly, as the commands in your question are prefixed with sudo, it appears you're installing to the global python environment. Strongly advise to take look into python ...
How can I extend typed Arrays in Swift?
...core }
}
}
Trying to do this with a struct or typealias will give an error:
Type 'Element' constrained to a non-protocol type 'HighScoreEntry'
Update:
To extend typed arrays with non-classes use the following approach:
typealias HighScoreEntry = (Int)
extension SequenceType where Genera...
403 Forbidden vs 401 Unauthorized HTTP responses
...s a problem with 401 Unauthorized, the HTTP status code for authentication errors. And that’s just it: it’s for authentication, not authorization.
Receiving a 401 response is the server telling you, “you aren’t
authenticated–either not authenticated at all or authenticated
incorrectl...
Is #pragma once a safe include guard?
... on using #pragma once as opposed to include guards is to avoid copy/paste errors.
Let's face it: most of us hardly start a new header file from scratch, but rather just copy an existing one and modify it to our needs. It is much easier to create a working template using #pragma once instead of inc...