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package objects
// append(arr, items...)
func builtinAppend(args ...Object) (Object, error) {
if len(args) < 2 {
return nil, ErrWrongNumArguments
}
switch arg := args[0].(type) {
case *Array:
return &Array{Value: append(arg.Value, args[1:]...)}, nil
case *ImmutableArray:
return &Array{Value: append(arg.Value, args[1:]...)}, nil
default:
return nil, ErrInvalidArgumentType{
Name: "first",
Expected: "array",
Found: arg.TypeName(),
}
}
}
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