Hi Mark, Am 27.04.2009 um 23:42 schrieb Mark Volkmann:
Is there something in core or contrib that supports creating a map where gets on undefined keys return a specified default value? For example, I'd like to create a hashmap where the default value for missing keys is zero.
You can specify the default value when retrieving the value:
(def m {:a 1 :b 2})
(get m :c 0) => 0
(m :c 0) => 0 (untested)
maybe also: (:c m 0) => 0 (also untested)
Sincerely
Meikel
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