// Copyright 2017 gf Author(https://gitee.com/johng/gf). All Rights Reserved.
//
// This Source Code Form is subject to the terms of the MIT License.
// If a copy of the MIT was not distributed with this file,
// You can obtain one at https://gitee.com/johng/gf.

// 其他工具包
package gutil

// 便利数组查找字符串索引位置，如果不存在则返回-1，使用完整遍历查找
func StringSearch (a []string, s string) int {
    for i, v := range a {
        if s == v {
            return i
        }
    }
    return -1
}

// 判断字符串是否在数组中
func StringInArray (a []string, s string) bool {
    return StringSearch(a, s) != -1
}

// 判断给定字符是否小写
func IsLetterLower(b byte) bool {
    if b >= byte('a') && b <= byte('z') {
        return true
    }
    return false
}

// 判断给定字符是否大写
func IsLetterUpper(b byte) bool {
    if b >= byte('A') && b <= byte('Z') {
        return true
    }
    return false
}