CODE EXAMPLE FOR TYPESCRIPT

Arrays example in typescript

interface Movie {
  title: string;
  lengthMinutes: number;
}

// The array is typed using the Movie interface
var movies: Movie[] = [];

// Each item added to the array is checked for type compatibility
movies.push({
  title: 'American History X',
  lengthMinutes: 119,
  production: 'USA'    // example of structural typing
});

movies.push({
  title: 'Sherlock Holmes',
  lengthMinutes: 128,
});

movies.push({
  title: 'Scent of a Woman',
  lengthMinutes: 157
});

function compareMovieLengths(x: Movie, y: Movie) {
  if (x.lengthMinutes > y.lengthMinutes) {
    return -1;
  }
  if (x.lengthMinutes < y.lengthMinutes) {
    return 1;
  }
  return 0;
}

// The array.sort method expects a comparer that accepts 2 Movies
var moviesOrderedLength = movies.sort(compareMovieLengths);

// Get the first element from the array, which is the longest
var longestMovie = moviesOrderedLength[0];

console.log(longestMovie.title); // Scent of a Woman