//通过凭证日期排序 recordList.sortBy({it.loanDate}) var certificateNumber = 1 recordList.forEachIndexed{index,item -> (index > 0).y { (item.loanDate == recordList.get(index - 1).loanDate).y { item.certificateNumber = certificateNumber } other { certificateNumber++ item.certificateNumber = certificateNumber } } other { item.certificateNumber = certificateNumber } }
kotlin 通过 下标比对
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转载自www.cnblogs.com/xiaowoniulx/p/10160861.html
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