removeBefore method
Removes everything in the String
before the match of the pattern
.
Example
String test = 'hello brother what a day today';
String afterString = test.removeBefore('brother'); // returns 'brother what a day today';
Implementation
String removeBefore(String pattern) {
if (this.isBlank) {
return this;
}
if (!this.contains(pattern)) {
return '';
}
List<String> patternWords = pattern.split(' ');
if (patternWords.isEmpty) {
return '';
}
int indexOfFirstPatternWord = this.indexOf(patternWords.first);
if (patternWords.last.length == 0) {
return '';
}
return this.substring(
indexOfFirstPatternWord + 1,
this.length,
);
}