Favorite non-python language trick?

[Erik Max Francis]

ncf wrote:

> Eh, just figured it'd be worth noting...map, filter, and reduce should
> be possible with the extended list syntaxes. Well, filter I know is,
> but hte others /should/ be possible.
> 
> filter(lambda: <<condition>>, <<seq>>)
> [some_var for some_var in <<seq>> if <<condition>>]

reduce isn't.

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