Here is the link you need. https://developer.apple.com/reference/foundation/nsregularexpression#
Zhaoxin On Sun, Jan 8, 2017 at 2:48 AM, Ethin Probst via swift-users < swift-users@swift.org> wrote: > Hello all, > This may be a very weird question. However, please bare with me while > I explain this. > I was speaking with a friend over Skype (we're both visually impaired, > so use Windows for pretty much everything) and my friend asked me to > develop a program that can take the numbers of vehicles (he's a GTA > fan, :)) in KMH (kilometers per hour) and convert it into MPH (miles > per hour). To do this, I chose Swift for this task, as I think it > might be a good challenge for it. I am using RemObjects Elements to > use Swift on .NET, Java, Cocoa, and Island to develop applications for > these platforms. Island is a new platform in RemObjects Elements that > allows developers to develop applications that use native API > functions from the operating system. For instance, on Windows, I could > directly (without any imports) use CreateWindowEx and all that to > create a new window. Sadly this cannot be ported to Mac OS X, as Cocoa > is reserved for that. :) > Anyways, back to the topic I'm trying to resolve. My friend gave me > too files, specs_cars.txt and specs_motorcycles.txt. Both files are > attached to this email (specs_cars.txt is nearly 45 KB in length and > specs_motorcycles.txt is about 3.9 KB). > So here's my question: I'm on .NET, so yeah, but how would I go about > using regular expressions to only search with lines that contain KMH > (I'll show you how I want it to be done) and replace the numbers of > KMH, along with the KMH itself, with MPH numbers followed by MPH? If > you guys could help me solve this, I would be grateful, as I don't > want to develop an entire parser for something like this, so regular > expressions seem to be the way to go. > > Allow me to show you: In the specs_motorcycles.txt file, this: > 0-100kmh: 3.9s > Should be replaced with: > 0-62.14kmh: 3.9s > > Now, this looks simple, but what about something like: > Top speed: 218 kmh > to be replaced with: > Top speed: 135.5 kmh > I hope you see my problem. I hope you can help me through this, and we > can solve it together. :) > > > > -- > Signed, > Ethin D. Probst > > _______________________________________________ > swift-users mailing list > swift-users@swift.org > https://lists.swift.org/mailman/listinfo/swift-users > >
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