Fuzion • Idioms • Idiom # 218: List intersection

Idiom # 218: List intersection

Code

creates an intersection of two sets

intersection(T type: has_equality, s1, s2 container.Set T) =>  # NYI: intersection missing from stdlib
  s1.as_list.filter (x -> s2.contains x)

c := intersection a b

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intersection(T type: has_equality, s1, s2 container.Set T) =>  # NYI: intersection missing from stdlib
  s1.as_list.filter (x -> s2.contains x)
c := intersection a b
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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What are effects?

Running Example

ex218 is

  intersection(T type: property.equatable, s1, s2 container.Set T) =>  # NYI: intersection missing from stdlib
    s1.as_list.filter (x -> s2.contains x)

  a := ["eins", "zwei", "drei"]
  b := ["drei", "vier", "fünf"]
  c := intersection (container.set_of_ordered a) (container.set_of_ordered b)
  say c

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ex218 is
  intersection(T type: property.equatable, s1, s2 container.Set T) =>  # NYI: intersection missing from stdlib
    s1.as_list.filter (x -> s2.contains x)
  a := ["eins", "zwei", "drei"]
  b := ["drei", "vier", "fünf"]
  c := intersection (container.set_of_ordered a) (container.set_of_ordered b)
  say c
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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What are effects?

last changed: 2024-07-01

next: Idiom # 219: Replace multiple spaces with single space