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The inequality operator was given as "!=", should be "<>".

The until construct was described as not returning a value: it always returns true if it finishes.
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Peter Lewerin 2018-11-24 20:21:26 +01:00 committed by GitHub
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1 changed files with 3 additions and 3 deletions
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@ -114,12 +114,12 @@ i2 * i1 ; result 2
i1 / i2 ; result 0 (0.5, but truncated towards 0) i1 / i2 ; result 0 (0.5, but truncated towards 0)
; Comparison operators are probably familiar, and unlike in other languages ; Comparison operators are probably familiar, and unlike in other languages
; you only need a single '=' sign for comparison. ; you only need a single '=' sign for comparison. Inequality is '<>' like in Pascal.
; There is a boolean like type in Red. It has values true and false, but also ; There is a boolean like type in Red. It has values true and false, but also
; the values on/off or yes/no can be used ; the values on/off or yes/no can be used
3 = 2 ; result false 3 = 2 ; result false
3 != 2 ; result true 3 <> 2 ; result true
3 > 2 ; result true 3 > 2 ; result true
3 < 2 ; result false 3 < 2 ; result false
2 <= 2 ; result true 2 <= 2 ; result true
@ -165,7 +165,7 @@ print ["a is " msg lf]
; until ; until
; Loop over a block of code until the condition at end of block, is met. ; Loop over a block of code until the condition at end of block, is met.
; UNTIL does not return any value, so it cannot be used in an expression. ; UNTIL always returns the 'true' value from the final evaluation of the last expression.
c: 5 c: 5
until [ until [
prin "o" prin "o"