id,summary,reporter,owner,description,type,status,priority,milestone,version,resolution,keywords,cc
65,Provide a invidual-item update action in mutable vector API,hvr,,"One of the operations I've caught myself defining is an `update` action for modifying an invididual item in a vector, i.e.: 
{{{
#!hs
import qualified Data.Vector.Unboxed.Mutable as VUM

update vec idx op = VUM.write vec idx . op =<< VUM.read vec idx
}}}

Could such a convenience operation (unless it's already there) be added to the mutable vector APIs?",enhancement,new,minor,0.10,,,,alexey.skladnoy@…