Thread¶ Threads a function over corresponding list elements. $ wo 'Thread[f[{a, b}, {x, y}]]' {f[a, x], f[b, y]} $ wo 'Thread[Plus[{1, 2}, {3, 4}]]' {4, 6} $ wo 'Thread[g[{a, b, c}, {1, 2, 3}]]' {g[a, 1], g[b, 2], g[c, 3]}