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Idiom # 224: Add element to the beginning of the list
Idiom # 224: Add element to the beginning of the list
See
programming-idioms.org
:
Code
# using 'infix ++' items := [x] ++ items # using 'insert' items := items.insert 0 x
What are effects?
Running Example
ex224 is items := [0,1,2,3] x := 99 items := [x] ++ items say items items := items.insert 0 x say items
What are effects?
next: Idiom # 225: Declare and use an optional argument
