associateBy<K, V> method
Returns a Map
containing the charachters from the string indexed by the
key from keySelector
.
If any of the returned keys would contain the same key, the last one gets added to the map.
The iteration order of the string is preserved.
final string = 'bonne journée';
// Associate each character with its code.
final result = string.associateBy((char) => char.codeUnitAt(0));
// Notice each letter occurs only once.
print(result); // {98: 'b', 111: 'o', 110: 'n', 101: 'e', 32: ' ', 106: 'j', 117: 'u', 114: 'r', 233: 'é'}
Implementation
Map<K, String> associateBy<K, V>(K Function(String value) keySelector) {
return split('').associateBy(keySelector);
}