Fuzion • Idioms • Idiom # 224: Add element to the beginning of the list

Idiom # 224: Add element to the beginning of the list

Code

# using 'infix ++'
items := [x] ++ items

# using 'insert'
items := items.insert 0 x

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# using 'infix ++'
items := [x] ++ items
# using 'insert'
items := items.insert 0 x
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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What are effects?

Running Example

ex224 is

  items0 := [0,1,2,3]
  x := 99

  items1 := [x] ++ items0
  say items1

  items2 := items1.insert 0 x
  say items2

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ex224 is
  items0 := [0,1,2,3]
  x := 99
  items1 := [x] ++ items0
  say items1
  items2 := items1.insert 0 x
  say items2
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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What are effects?

last changed: 2024-07-01

next: Idiom # 225: Declare and use an optional argument