正则表达式,在Ruby中具有前瞻性
我当前的正则表达式之争是在字符串中的数字前替换所有逗号。 然后正则表达式必须忽略所有后续逗号。 我已经在rubular上拧了大约一个小时,看起来似乎无法正常工作。
测试字符串……
'this is, a , sentence33 Here, is another.'
期望的输出……
'this is comma a comma sentence33 Here, is another.'
所以有些东西……
testString.gsub(/\,*\d\d/,"comma")
为了给你一些背景知识,我正在做一些有趣的侧面项目。 我收集的元素主要以逗号分隔,从两位数年龄开始。 然而,有时候可能包含逗号的年龄前的标题。 为了保留我稍后设置的结构,我需要替换标题中的逗号。
在尝试叠加溢出之后的答案……
我还有一些问题。 不要笑,但这里是从屏幕抓取导致问题的实际线…
statsString = " 23, 5'9\", 140lb, 29w, Slim, Brown Hair, Shaved Body, White, Looking for Friendship, 1-on-1 Sex, Relationship. Out Yes,SmokeNo,DrinkNo,DrugsNo,ZodiacCancer. Versatile, 7.5\" Cut, Safe Sex Only, HIV Negative, Prefer meeting at:Public Place. PerformerContact xxxxxx87 This user has TURNED OFF his IM Send Smile Write xxxxxx87 a message:"
首先对所有这些片段添加“xx”,以便我的逗号过滤在所有情况下都能正常工作,那些在年龄之前有文本和没有文本的情况。 接下来是实际修复。 输出低于……
statsString = 'xx, ' + statsString statsString = statsString.gsub(/\,(?=.*\d)/, 'comma'); => "xxcomma 23comma 5'9\"comma 140lbcomma 29wcomma Slimcomma Brown Haircomma Shaved Bodycomma Whitecomma Looking for Friendshipcomma 1-on-1 Sexcomma Relationship. Out YescommaSmokeNocommaDrinkNocommaDrugsNocommaZodiacCancer. Versatilecomma 7.5\" Cutcomma Safe Sex Onlycomma HIV Negativecomma Prefer meeting at:Public Place. PerformerContact xxxxx87 This user has TURNED OFF his IM Send Smile Write xxxxxxx87 a message:"
码:
testString = 'this is, a , sentence33 Here, is another.'; result = testString.gsub(/\,(?=.*\d)/, 'comma'); print result;
输出:
this iscomma a comma sentence33 Here, is another.
测试:
不是那么短暂,但似乎解决了你的任务:
str = 'this is, a , sentence33 Here, is another.' str = str.match(/(.*)(\d+.*)/) do before = $1 tail = $2 before.gsub( /,/, 'comma' ) + tail end print str