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How do you rename a Git tag?
...gh the logs for a project and realized that I fat fingered a tag name some time ago. Is there some way to rename the tag? Google hasn't turned up anything useful.
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What does the Q_OBJECT macro do? Why do all Qt objects need this macro?
...a-object code is required for the
signals and slots mechanism, the
run-time type information, and the
dynamic property system.
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Binding multiple events to a listener (without JQuery)?
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In POJS, you add one listener at a time. It is not common to add the same listener for two different events on the same element. You could write your own small function to do the job, e.g.:
/* Add one or more listeners to an element
** @param {DOMElement} ele...
How can I pretty-print JSON in a shell script?
...he above cases. You can put this in .bashrc and it will be available every time in shell. Invoke it like prettyjson_s '{"foo": "lorem", "bar": "ipsum"}'.
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Efficiently updating database using SQLAlchemy ORM
...l the objects from the database, modify all the objects and then when it's time to flush the changes to the database, update the rows one by one.
Instead you should do this:
session.execute(update(stuff_table, values={stuff_table.c.foo: stuff_table.c.foo + 1}))
session.commit()
This will execute...
Evenly distributing n points on a sphere
...Wonderful, thanks for the explanation. I'll try it out later, as I haven't time currently, but thank you so much for helping me out. I'll let you know how it ends up working for my purposes. ^^
– Befall
Mar 7 '12 at 21:06
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Using custom std::set comparator
...&)> mySet(&comparator);
which is irritating to type out every time you need a set of that type, and can cause issues if you don't create all sets with the same comparator.
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Creating a singleton in Python
...s Logger(metaclass=Singleton):
pass
If you want to run __init__ every time the class is called, add
else:
cls._instances[cls].__init__(*args, **kwargs)
to the if statement in Singleton.__call__.
A few words about metaclasses. A metaclass is the class of a class; that is, a ...
PHP Array to CSV
...hp://memory','w');
$header=array("asdf ","asdf","asd","Calasdflee","Start Time","End Time" );
fputcsv($f,$header);
fputcsv($f,$header);
fputcsv($f,$header);
fseek($f,0);
header('content-type:text/csv');
header('Content-Disposition: attachment; filename="' . $filename . '";');
fpassth...
Why doesn't Objective-C support private methods?
...me dynamic method resolution point as every other method dispatch. At runtime, every method implementation has the exact same exposure and all of the APIs provided by the Objective-C runtime that work with methods and selectors work equally the same across all methods.
As many have answered (both...