The only way to communicate with other iOS apps “locally” is using what is called URLSchemes. This is the documentation to use URLScheme with the MSOffice apps. https://msdn.microsoft.com/en-us/library/office/dn911482.aspx Answering the specific question: How to check if file (image, xls, doc or any other) can be opened to edit? You can use the UIApplication method called … Read more
Nothing should be copied. Just add required files to compile sources for your extension:
Including mutating and non mutating versions that are consistent with API guidelines. Swift 3: extension String { func capitalizingFirstLetter() -> String { let first = String(characters.prefix(1)).capitalized let other = String(characters.dropFirst()) return first + other } mutating func capitalizeFirstLetter() { self = self.capitalizingFirstLetter() } } Swift 4: extension String { func capitalizingFirstLetter() -> String { return … Read more