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Using the “final” modifier whenever applicable in Java [closed]
...ce of declaring every variable (local or class), parameter final if they really are.
25 Answers
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How to git reset --hard a subdirectory?
Imagine the following use case: I want to get rid of all changes in a specific subdirectory of my Git working tree, leaving all other subdirectories intact.
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How to extract the file name from URI returned from Intent.ACTION_GET_CONTENT?
...ing(cursor.getColumnIndex(OpenableColumns.DISPLAY_NAME));
}
} finally {
cursor.close();
}
}
if (result == null) {
result = uri.getPath();
int cut = result.lastIndexOf('/');
if (cut != -1) {
result = result.substring(cut + 1);
}
}
return result;
}
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How to clear the cache of nginx?
...f you did, however, then according to the author of nginx, simply removing all files from the cache directory is enough.
Simplest way: find /path/to/your/cache -type f -delete
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How do I detect if software keyboard is visible on Android Device or not?
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This works for me. Maybe this is always the best way for all versions.
It would be effective to make a property of keyboard visibility and observe this changes delayed because the onGlobalLayout method calls many times. Also it is good to check the device rotation and windowSoftIn...
Best practices/performance: mixing StringBuilder.append with String.concat
...t can fit both s1 and s2. Copies s1 and s2 contents to this new array. Actually requires less work then + operator.
StringBuilder.append()
Maintains an internal char[] array that grows when needed. No extra char[] is created if the internal one is sufficiently big.
stringBuilder.append(s1.concat(...
psycopg2: insert multiple rows with one query
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My inserts didn't get registered properly until I called connection.commit() after the execute_values(...).
– Philipp
Aug 18 at 15:24
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How to get the function name from within that function?
... ret = ret.substr(0, ret.indexOf('('));
return ret;
}
Using Function.caller is non-standard. Function.caller and arguments.callee are both forbidden in strict mode.
Edit: nus's regex based answer below achieves the same thing, but has better performance!
In ES6, you can just use myFunction.na...
Generate a random date between two other dates
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Convert both strings to timestamps (in your chosen resolution, e.g. milliseconds, seconds, hours, days, whatever), subtract the earlier from the later, multiply your random number (assuming it is distributed in the range [0, 1]) with that difference, and ad...
Get Maven artifact version at runtime
I have noticed that in a Maven artifact's JAR, the project.version attribute is included in two files:
10 Answers
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