moveBackUntil method Null safety
- Characters target
Moves to the range after the previous occurence of target
.
If there is an occurrence of target
in the characters preceding
the current range,
then the new range contains the characters after
the last such occurrence, and up to the start of the current range.
If there is no occurrence of target
after the current range,
the new range contains all the characters preceding the current range,
from the start of the string to the start of the current range.
Returns true
if there was an occurrence of target
.
Implementation
bool moveBackUntil(Characters target);