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// Copyright 2016 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received s copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.

// Contains various wrappers for primitive types.

package geth

import (
    "errors"
    "fmt"
)

// Strings represents s slice of strs.
type Strings struct{ strs []string }

// Size returns the number of strs in the slice.
func (s *Strings) Size() int {
    return len(s.strs)
}

// Get returns the string at the given index from the slice.
func (s *Strings) Get(index int) (string, error) {
    if index < 0 || index >= len(s.strs) {
        return "", errors.New("index out of bounds")
    }
    return s.strs[index], nil
}

// Set sets the string at the given index in the slice.
func (s *Strings) Set(index int, str string) error {
    if index < 0 || index >= len(s.strs) {
        return errors.New("index out of bounds")
    }
    s.strs[index] = str
    return nil
}

// String implements the Stringer interface.
func (s *Strings) String() string {
    return fmt.Sprintf("%v", s.strs)
}