Fuzion • Idioms • Idiom # 43: Break outer loop

Idiom # 43: Break outer loop

Code

There is no break or goto in Fuzion, so we have to help ourselves differently. In Fuzion, a loop that may execute successfully (until condition become true) or not (until the iterated set is exhausted) can be used as a boolean expression. Its value is true on success. Consequently, we can use the complete inner loop as the until condition of the outer loop:

for v in m until
  for i in v until i < 0
    say "Found $i"

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for v in m until
  for i in v until i < 0
    say "Found $i"
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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What are effects?

Running Example

ex43 is

  // m is array of intervals [100..300, 80..300, 60..300, etc., -80..300]
  m := array 10 (i -> (100 - 20*i)..300)

  _ := for v in m until
         for i in v until i < 0
           say "Found $i"

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ex43 is
  // m is array of intervals [100..300, 80..300, 60..300, etc., -80..300]
  m := array 10 (i -> (100 - 20*i)..300)
  _ := for v in m until
         for i in v until i < 0
           say "Found $i"
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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What are effects?

last changed: 2024-07-01

next: Idiom # 44: Insert element in list