Cory Alder

                 DMActivityInstagram is a UIActivity for sharing to instagram.
                 Use with iOS 6's UIActivityViewController.
                 Includes a resizer view controller class for cropping / resizing non-square images.

                 Example usage:

                 * `DMActivityInstagram *instagramActivity = [[DMActivityInstagram alloc] init];`
                 * `NSString *shareText = @"CatPaint #catpaint";`
                 * `NSURL *shareURL = [NSURL URLWithString:@"http://catpaint.info"];`
                 * `NSArray *activityItems = @[self.imageView.image, shareText, shareURL];`
                 * `UIActivityViewController *activityController = [[UIActivityViewController alloc] initWithActivityItems:activityItems applicationActivities:@[instagramActivity]];`

[self presentViewController:activityController animated:YES completion:nil];`

许可证：MIT

Levenshtein 距离是衡量两个字符串之间差异的度量。它可以用作模糊搜索等功能。这是基于 Mark Aufflick 的 Objective-C "NSString+Levenshtein" 的 Swift 1.2 实现。

许可证：MIT