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Gale

Booleans

Boolean has two values: true and false. Combine them with and, or, and not. Conditions must be booleans; numbers and strings are not truthy.

mod booleans


pub fn ready(warm: Boolean, dry: Boolean) -> Boolean {
  warm and dry
}


pub fn enabled(manual: Boolean, automatic: Boolean) -> Boolean {
  manual or automatic
}


pub fn toggle(value: Boolean) -> Boolean {
  not value
}


pub fn label(value: Boolean) -> String {
  if value {
    "yes"
  } else {
    "no"
  }
}

Comparisons such as count > 0 return a Boolean. An if expression always has an else branch and returns the value of the selected branch. See Matching for exhaustive patterns and multiple conditions.