From 63ab96e72a704175133901657bfc52fb9b45d132 Mon Sep 17 00:00:00 2001 From: Peter Lewerin Date: Sat, 24 Nov 2018 20:21:26 +0100 Subject: Update red.html.markdown 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. --- red.html.markdown | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'red.html.markdown') diff --git a/red.html.markdown b/red.html.markdown index 73baf462..9cf6c31d 100644 --- a/red.html.markdown +++ b/red.html.markdown @@ -114,12 +114,12 @@ i2 * i1 ; result 2 i1 / i2 ; result 0 (0.5, but truncated towards 0) ; 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 ; the values on/off or yes/no can be used 3 = 2 ; result false -3 != 2 ; result true +3 <> 2 ; result true 3 > 2 ; result true 3 < 2 ; result false 2 <= 2 ; result true @@ -165,7 +165,7 @@ print ["a is " msg lf] ; until ; 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 until [ prin "o" -- cgit v1.2.3