Method eval

scripting_commands.go:46–69

(ctx context.Context, name, payload string, keys []string, args ...interface{})

}

func (c cmdable) eval(ctx context.Context, name, payload string, keys []string, args ...interface{}) *Cmd {
	cmdArgs := make([]interface{}, 3+len(keys), 3+len(keys)+len(args))
	cmdArgs[0] = name
	cmdArgs[1] = payload
	cmdArgs[2] = len(keys)
	for i, key := range keys {
		cmdArgs[3+i] = key
	}
	cmdArgs = appendArgs(cmdArgs, args)
	cmd := NewCmd(ctx, cmdArgs...)

	// it is possible that only args exist without a key.
	// rdb.eval(ctx, eval, script, nil, arg1, arg2)
	if len(keys) > 0 {
		cmd.SetFirstKeyPos(3)
	}
	_ = c(ctx, cmd)
	if err := cmd.Err(); err != nil {
		if HasErrorPrefix(err, "NOSCRIPT") {
			cmd.SetErr(ErrNoScript)
		}
	}
	return cmd
}

func (c cmdable) ScriptExists(ctx context.Context, hashes ...string) *BoolSliceCmd {
	args := make([]interface{}, 2+len(hashes))