Need help on replace using regular expression

Question

Hi. I have the following string aaaaaa££aaaaa£aaaaa££ and i want to replace £ for € and ££ for £. (the string may change but the rules are the same) i've tried doing the following : stringvar.replace(/[£]/g€)).replace(/[££]/g£) It's obvious that the first replace replaces all £ by €..so the second replace never happens. I'm trying to find a regular expression that helps me on this case like saying to the replace that if he find a £ isolated from other £ he can replace for €. If not replace with £. Hope you can help. Cheers.

Edgar Santos · Answer

Ok thank you. Problem solved. Cheers.

Alan · Answer

The trick here is to replace ££ not with £ but with something that your string will never contain such as a null character. You can then replace £ with the euro symbol and finally replace the null character with a £. I don't know what the code is in Javascript but in C# it's: string stringvar = aaaaaa££aaaaa£aaaaa££; string euro = \u20AC; stringvar = Regex.Replace(stringvar££\0); stringvar = Regex.Replace(stringvar£euro); stringvar = Regex.Replace(stringvar\0£); MessageBox.Show(stringvar);

Bechir Bejaoui · Answer

You can prevent headake by using this line of code Of Corse add using System.Threading; to your project then Add this line of code to your current thread Thread.CurrentThread.CurrentCulture = new System.Globalization.CultureInfo(en-UK); you can change the en-UK to many other cultures to suite your needs Ohter solution is to use the Expresso 3.0 software witch is a regular expressions builder