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authorDivay Prakash <divayprakash@users.noreply.github.com>2018-12-01 09:54:53 +0530
committerGitHub <noreply@github.com>2018-12-01 09:54:53 +0530
commit3fa5983bdb0bd740e21edb3eff8e75f8fe05ed38 (patch)
tree0ef96429b8e51b81122f021bb66ff9b0f9dfbe92
parentd77dcb85609dd9986e4290a0648390e282c1d680 (diff)
parent7522161aecbca946c15127cb0dd7d556a4a48f33 (diff)
Merge pull request #3409 from hoodiecrow/patch-1
[red/en] Update red.html.markdown
-rw-r--r--red.html.markdown10
1 files changed, 5 insertions, 5 deletions
diff --git a/red.html.markdown b/red.html.markdown
index 73baf462..74538bd7 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
@@ -129,8 +129,8 @@ i1 / i2 ; result 0 (0.5, but truncated towards 0)
; Control Structures
;
; if
-; Evaluate a block of code if a given condition is true. IF does not return
-; any value, so cannot be used in an expression.
+; Evaluate a block of code if a given condition is true. IF returns
+; the resulting value of the block or 'none' if the condition was false.
if a < 0 [print "a is negative"]
; either
@@ -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"