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Django select only rows with duplicate field values
...viously had a bug on this (might have been fixed in recent versions) where if you don't specify a fieldname for the Count annotation to saved as, it defaults to [field]__count. However, that double-underscore syntax is also how Django interprets you wanting to do a join. So, essentially when you try...
Programmatically change log level in Log4j2
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EDITED to reflect changes in the API introduced in Log4j2 version 2.0.2
If you wish to change the root logger level, do something like this :
LoggerContext ctx = (LoggerContext) LogManager.getContext(false);
Configuration config = ctx.getConfiguration();
LoggerConfig loggerConfig = config.getLog...
How to undo the effect of “set -e” which makes bash exit immediately if any command fails?
...entering set -e in an interactive bash shell, bash will exit immediately if any command exits with non-zero. How can I undo this effect?
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How can I get the last 7 characters of a PHP string?
... php docs:
string substr ( string $string , int $start [, int $length ] )
If start is negative, the returned string will start at the start'th character from the end of string.
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AngularJS : Difference between the $observe and $watch methods
...$scope changes in AngularJS. But couldn't understand what exactly is the difference between the two.
4 Answers
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What happens if a finally block throws an exception?
If a finally block throws an exception, what exactly happens?
11 Answers
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Clojure differences between Ref, Var, Agent, Atom, with examples
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In coordinated access, if I want to only change state-a, but refer to state-b in doing so, I still need a ref correct? So it's not changing multiple things but referring to multiple things while changing any of them?
– event_...
Given two directory trees, how can I find out which files differ by content?
If I want find the differences between two directory trees, I usually just execute:
10 Answers
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C++ : why bool is 8 bits long?
...chitectural choice (hw level): one could very well design a system with a different "unit of addressing". For common processors, addressing a "byte" anyhow ends-up fetching more than a "byte" from external memory: this is due to efficiency reasons.
– jldupont
J...
How do I prevent angular-ui modal from closing?
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While you creating your modal you can specify its behavior:
$modal.open({
// ... other options
backdrop : 'static',
keyboard : false
});
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