Control flow

if, while, and guards

Use if / elsif / else for branching and while for loops. A trailing if is useful for single-line guards:

print "passing" if score >= 60

Ranges and match

Inclusive ranges use from..to. Sapphire v0.8.0 also adds match, with literal and range patterns plus _ as the wildcard arm.

score = 87

grade = match score {
  90..100 => { "A" }
  80..89 => { "B" }
  70..79 => { "C" }
  _ => { "keep going" }
}

print "grade: #{grade}"

(1..5).each { |n|
  print "even: #{n}" if n % 2 == 0
}