On Friday, September 9, 2016 at 6:36:17 AM UTC-5, puzzler wrote:
>
> ...
> You can use `into` to "pour" the sequence into the collection of your
> choice. If you're using `into`, then most of these sequence functions
> support transducers to avoid allocation of intermediate sequences,
> providing a speed boost.
>
I routinely use `vec` for the kind of case that Colin described. The
effect is the same as `(into [] ...)` but it's more concise and doesn't
require that extra tenth of a moment to figure out what kind of thing
`into` is sending the sequence into. I have no idea whether this is more
or less efficient than using `into`, however.
A succinct summary of the basic idea implicit or explicit in other answers
in this thread:
Most Clojure sequence functions produce lazy sequences.
If you want something anything other than a lazy sequence, convert it
(with vec, into, etc.).
Bit me, too, but the correct rule is very simple, and easy to
remember--which doesn't mean that I always remember to follow it!
Lazy sequences are the Clojure Way.
I love 'em.
And hate them.
It depends.
But they are the Clojure Way.
(Well--until transducers.)
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