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ferret/pkg/stdlib/arrays/last.go
Tim Voronov 1af8b37a0f
New type system ()
* New type system

* Fixed dot notation for HTML elements
2019-02-13 12:31:18 -05:00

31 lines
660 B
Go

package arrays
import (
"context"
"github.com/MontFerret/ferret/pkg/runtime/core"
"github.com/MontFerret/ferret/pkg/runtime/values"
"github.com/MontFerret/ferret/pkg/runtime/values/types"
)
// Last returns the last element of an array.
// @param array (Array) - The target array.
// @returns (Read) - Last element of an array.
func Last(_ context.Context, args ...core.Value) (core.Value, error) {
err := core.ValidateArgs(args, 1, 1)
if err != nil {
return values.None, err
}
err = core.ValidateType(args[0], types.Array)
if err != nil {
return values.None, nil
}
arr := args[0].(*values.Array)
return arr.Get(arr.Length() - 1), nil
}