startsWith method
Implementation
bool startsWith(MutableStringSlice other) {
if (other.length > this.length) {
return false;
}
if (other == this) {
return true;
}
for (int i = _startIndex, j = other._startIndex;
j < other.length;
i++, j++) {
if (other._source.codeUnitAt(j) != _source.codeUnitAt(i)) {
return false;
}
}
return true;
}