I think this is not a bad idea. ;)
At all, a method/function name should describe what it does. And if
'contains?' only looks for keys, then 'contains-key?' would be a better
descriptor for it.
Am 03.09.2012 13:29, schrieb Jim - FooBar();:
this is probably the single most confusing name in clojure! :-)
why can't we make it "contains-key?" ?
Jim
On 03/09/12 12:14, Goldritter wrote:
Ah ok. So I need to transform a vector and/or a list into a set first.
Thanks.
Am Montag, 3. September 2012 13:05:52 UTC+2 schrieb Ambrose
Bonnaire-Sergeant:
'contains?' tests if a key is in a collection.
Vector is an associative data structure, with keys being indexes.
A vector of length 3 has the key 2, but not key 3.
Thanks,
Ambrose
On Mon, Sep 3, 2012 at 7:03 PM, Goldritter
<marcus.goldr...@googlemail.com <javascript:>> wrote:
I use Clojure 1.4.0 and wanted to use 'contains?' on a vector
and get following results:
=> (contains? [1 2 3] 3)
false
=> (contains? [1 2 3] 2)
true
As it seems 'contains?' does not check for the last entry in
the vector.
And an other question.
Why does contains? returns everytime 'false' when used on a list?
=> (contains? (list 1 2 3) 1)
false
=> (contains? (list 1 2 3) 2)
false
=> (contains? (list 1 2 3) 3)
false
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