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Effective way to find any file's Encoding
... == 0xff) return new UTF32Encoding(true, true); //UTF-32BE
// We actually have no idea what the encoding is if we reach this point, so
// you may wish to return null instead of defaulting to ASCII
return Encoding.ASCII;
}
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Is there a version control system for database structure changes?
...keeps track of your current db version.
To migrate up, you run a command called "db:migrate" which looks at your version and applies the needed scripts. You can migrate down in a similar way.
The migration scripts themselves are kept in a version control system -- whenever you change the database ...
How to iterate over associative arrays in Bash
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This is now if assign all keys to an array: array=(${!hash[@]})
– Michael-O
Jun 6 '13 at 10:54
12
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setResult does not work when BACK button pressed
I am trying to setResult after the BACK button was pressed. I call in onDestroy
10 Answers
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Detect if homebrew package is installed
...out to write a shell script to detect if several homebrew packages are installed in the system. Is there a way to use a brew command to achieve that?
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Why is there no std::stou?
...rary has no corresponding “strtou”, and the C++11 string functions are all just thinly veiled wrappers around the C library functions: The std::sto* functions mirror strto*, and the std::to_string functions use sprintf.
Edit: As KennyTM points out, both stoi and stol use strtol as the underly...
What happens when a duplicate key is put into a HashMap?
...laces the previous value associated with the given key in the map (conceptually like an array indexing operation for primitive types).
The map simply drops its reference to the value. If nothing else holds a reference to the object, that object becomes eligible for garbage collection. Additionall...
XML schema or DTD for logback.xml?
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It is not supported officially according to the documentation, but there is an independent project to provide Schema for Logback
However, due to extreme flexibility of the Logback configuration, Schema cannot support all possible configuration option...
How can I do something like a FlowLayout in Android?
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thanks romain guy, that really helps. how about just giving the solution? or link?... I dont get how you answer was accepted.
– Johann Hilbold
Aug 2 '12 at 14:52
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C: What is the difference between ++i and i++?
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jonnyflash, both will operate identically, since the increment of i and the print are in different statements. This should be the case for any language that supports C-style ++. The only difference between ++i and i++ will be when using the value of the operat...