JS notation to Immutable.js notation
Now Immutable.js made its way into many frontends. This challenge consists of a typical refactoring that many of us are facing now.
lines[1][1] = 'hello' lines[2][0] = 'world' lines[3][1] = 'whats' lines[10][2] = 'going' lines[12][1] = 'on'
lines .setIn([1, 1], 'hello') .setIn([2, 0], 'world') .setIn([3, 1], 'whats') .setIn([10, 2], 'going') .setIn([12, 1], 'on')