libcore: fix doc for char::to_digit

Closes #3249.
rust-lang · Aug 22, 2012 · 493117d · 493117d
1 parent 907f5b4
commit 493117d
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/libcore/char.rs b/src/libcore/char.rs
@@ -107,7 +107,7 @@ pure fn is_digit(c: char) -> bool {
  *
  * # Safety note
  *
- * This function fails if `c` is not a valid char
+ * This function returns none if `c` is not a valid char
  *
  * # Return value
  *