leftOf method
Returns the left side of the String
starting from char
.
If char
doesn't exist, null
is returned.
Example
String s = 'peanutbutter';
String foo = s.leftOf('butter'); // returns 'peanut'
Implementation
String? leftOf(String char) {
if (this.isBlank) {
return this;
}
int index = this!.indexOf(char);
if (index == -1) {
return null;
}
return this!.substring(0, index);
}