Pads a list on the left to a specified length.
PadLeft[list, n]
PadLeft[list, n, x]
PadLeft[list, n, {x1, x2, …}]
PadLeft[list, n, padding, m]
PadLeft[list, {n1, n2, …}]
PadLeft[list]
PadLeft[{1, 2, 3}, 5]
→ {0, 0, 1, 2, 3}PadLeft[{a, b}, 4, x]
→ {x, x, a, b}PadLeft[{1, 2, 3, 4, 5}, 3]
→ {3, 4, 5}PadLeft[{1, 2}, 7, {x, y, z}]
→ {z, x, y, z, x, 1, 2}PadLeft[{{1, 2}, {3, 4}}, {3, 4}, {{a, b}, {c, d}}]
→ {{c, d, c, d}, {a, b, 1, 2}, {c, d, 3, 4}}