On 19 June 2016 at 00:07, Olek <aleksander.nas...@gmail.com> wrote: > > Now lets talk about "difficulties" which I have found. > For example when we talk about removing element from collection. > > Why there is no one operation which could behave the same for set, vector, > list, string, and map? Let the community talk by themselves: > http://stackoverflow.com/questions/28844647/why-are-disj-and-dissoc-distinct-functions-in-clojure >
I guess the difference is intent, but you'd have to ask Rich. > Why there is no one operation for checking if an element is in a > collection/keys of map/string? > > http://stackoverflow.com/questions/3249334/test-whether-a-list-contains-a-specific-value-in-clojure > You can use "some" to achieve this effect for most collections. Maps are a little tricky, because you could be checking for the existence of a key, a value, or a key-value pair. It might be nice to have an "includes?" function, though, particularly one that was more efficient. > There is no even simple method for saying that element is not a nil. This > requires from me the (not (nil? %)) combo. > There is. "clojure.core/some?" is the same as #(not (nil? #)). - James -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups "Clojure" group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
