Thanx!,
That is exactly what I was looking for!,
Being a clojure newbie and a non-native speaker it is hard to find
the correct function among many in clojure core API :-)
If only the documentation would provide simple examples like you
provided...
On 14 okt, 18:20, liebke <lie...@gmail.com> wrote:
> Here's one approach:
>
> (into {} [[:a 1] [:b 2] [:c 3]])
>
> => {:a 1, :b 2, :c 3}
>
> On Oct 14, 11:54 am, Henk <henkp...@gmail.com> wrote:
>
>
>
> > Hi All,
>
> > In Python I was used to be able to easily create dictionaries from
> > lists of key value 'pairs' (tuples or list), e.g. like this:
>
> > dict([(10, 20), (30, 40)]) #using the dict constructor
> > =>
> > {10:20, 30:40}
>
> > What would be the equivalent in Clojure?, e.g. the normal Clojure hash-
> > map function takes a list
> > of alternating keys and values which is not quite the same.
> > This is a quite common need (especially in the context of initializing
> > a hash-map from a list comprehension, like this:
>
> > (dict (for [x programmers :when ((x :-p rogramming_skills) :java)]
> > [(x :id) (str (x :firstname) " " (x :lastname))]))
>
> > This function seems to do the trick:
>
> > (defn dict [x] (apply hash-map (apply concat x)))
>
> > but it is quite slow, e.g. much slower than the python native version
> > (I did some small benchmarks on this), while the list comprehension
> > itself is much faster than python...
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