Flutter Projects

map()

The map() method transforms each element in a list and returns the result of the transformation in a new list. Let's see this method in action by editing our code:

void main() { String mySongs = sing(); print (mySongs); }String sing() {  var songs = List<String>();  songs.add('We will Rock You');  songs.add('One');  songs.add('Sultans of Swing');  var capitalSongs = songs.map((song)=> song.toUpperCase()); return capitalSongs.toString(); }

The result of this code is that the songs are now printed in uppercase, but the interesting part of the code is the following line:

var capitalSongs = songs.map((song)=> song.toUpperCase());

Here, you can see the map() method of a list in action. For each element of the list, in this case a song, the ...