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Fuzion • Idioms • Idiom # 78: do while loop

Idiom # 78: do while loop

See programming-idioms.org:

Code

do
  some_thing
until !c

What are effects?

Running Example

ex78 is

  # let's print the 3x+1 sequence starting at 27
  # (see https://mathworld.wolfram.com/CollatzProblem.html):
  #
  start := 27
  for
    n in 1..
    x := start, if x %% 2 then x/2 else 3*x+1
    mx := x, max mx x
  do
    say "$n: $x {if x=mx then "new max" else ""}"
  until x <= 1
    say "total $n steps, maximum reached was $mx"

  unit

What are effects?

next: Idiom # 79: Convert integer to floating point number