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authorPeter Lewerin <peter.lewerin@tele2.se>2018-11-24 20:21:26 +0100
committerGitHub <noreply@github.com>2018-11-24 20:21:26 +0100
commit63ab96e72a704175133901657bfc52fb9b45d132 (patch)
treed4dacd7391129af85eaa8c2c098eba18e3505c70
parentb93ea7add75f774fd7d1f2b450a3517ea924bff4 (diff)
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.
-rw-r--r--red.html.markdown6
1 files changed, 3 insertions, 3 deletions
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"