Append

Append(expr, item)

returns expr with item appended to its leaves.

Examples

>> Append({1, 2, 3}, 4)
{1,2,3,4}

Append works on expressions with heads other than List:

>> Append(f(a, b), c)
f(a,b,c)

Unlike Join, Append does not flatten lists in item:

>> Append({a, b}, {c, d})
{a,b,{c,d}}

Nonatomic expression expected.

>> Append(a, b)
Append(a,b)

Implementation status

• ✅ - full supported

Github

• Implementation of Append