项目实战字符串分割函数--lua
项目实现:实现字符串制定字符分割,返回一个lua表格,可指定获取分割的数量。
字符串 str = "1-2-3-4-5-6-7"
分割效果
strTable = {
[1] = 1,
[2] = 2,
[3] = 3,
[4] = 4,
[5] = 5,
[6] = 6,
[7] = 7,
}
function Split(str, delim, num) if string.find(str, delim) == nil then return {str} end if num == nil or num < 1 then num = 0 end local result = {} local pat = "(.-)"..delim.."()" local nNum = 0 local lastPos for part, pos in string.gfind(str, pat) do --string.gfind 返回一个迭代器,迭代器每执行一次,返回下一个匹配字符串 nNum = nNum + 1 result[nNum] = part lastPos = pos if nNum == num then break end end if nNum ~= num then result[nNum+1] = string.sub(str,lastPos) end return result end
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