Fuzion • Idioms • Idiom # 11: Pick a random element from a list

Idiom # 11: Pick a random element from a list

A random number in Fuzion is obtained via the effect random, operation next_i32 returns a positive integer smaller than the argument.

Code

x.drop (random.next_i32 x.length)
 .first

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x.drop (random.next_i32 x.length)
 .first
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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What are effects?

Running Example

x := ["red", "pink", "lilac", "purple", "rose", "lavender", "mauve", "violet", "plum" ]

for _ in 1..10 do
  c := x.drop (random.next_i32 x.length)
        .first
  say "color: $c"

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x := ["red", "pink", "lilac", "purple", "rose", "lavender", "mauve", "violet", "plum" ]
for _ in 1..10 do
  c := x.drop (random.next_i32 x.length)
        .first
  say "color: $c"
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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What are effects?

last changed: 2025-05-13

next: Idiom # 12: Check if list contains a value