用其他字符替换字符串中的字符(唯一的通配符值) [英] Replace characters (unique then wildcard value) in a string with other characters
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问题描述
我有一个 NSString,比方说H、L、K、P"如何检测特定字符而不是通配符......例如,检查,*"将返回,L" ",K" 和 ",P" 因为它们都有特定的,",然后它们后面都有一个字符.然后我想用它本身加上一个句点"来替换该字符串.
I have an NSString, let's say "H,L,K,P" how can I detect a specific character than then a wild-car character... for example, checking for ",*" would return ",L" ",K" and ",P" because they all have the specific "," and then they all have a character after them. Then I want to replace that string with itself plus a "period" appended to it.
所以H,L,K,P"会变成H,L.,K.,P"
So "H,L,K,P" would become "H,L.,K.,P."
推荐答案
使用正则表达式.搜索模式将是:
Use a regular expression. The search pattern would be:
,(.)
替换模式为:
,$1.
示例代码:
NSString *string = @"H,L,K,P";
NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:@",(.)"
options:0
error:&error];
NSString *modifiedString = [regex stringByReplacingMatchesInString:string
options:0
range:NSMakeRange(0, [string length])
withTemplate:@",$1."];
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