diff options
| -rw-r--r-- | lib/pure/strutils.nim | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/pure/strutils.nim b/lib/pure/strutils.nim index c9a577b13..0e192aec0 100644 --- a/lib/pure/strutils.nim +++ b/lib/pure/strutils.nim @@ -1471,6 +1471,7 @@ proc count*(s: string, sub: string, overlapping: bool = false): int {. ## Count the occurrences of a substring `sub` in the string `s`. ## Overlapping occurrences of `sub` only count when `overlapping` ## is set to true. + doAssert sub.len > 0 var i = 0 while true: i = s.find(sub, i) @@ -1488,6 +1489,7 @@ proc count*(s: string, sub: char): int {.noSideEffect, proc count*(s: string, subs: set[char]): int {.noSideEffect, rtl, extern: "nsuCountCharSet".} = ## Count the occurrences of the group of character `subs` in the string `s`. + doAssert card(subs) > 0 for c in s: if c in subs: inc result |