| UIWebView *webView = [[UIWebView alloc] initWithFrame:CGRectMake(0, 0, 320.0, 480.0)]; | |
| webView.delegate = self; | |
| [webView loadHTMLString:@"<html></html>" baseURL:[[NSBundle mainBundle] bundleURL]]; | |
| #pragma mark - UIWebViewDelegate | |
| - (void)webViewDidFinishLoad:(UIWebView *)webView { | |
| NSString *script = @"(function(){return 'Hi, how are you?';})();"; | |
| NSString *returnValue = [webView stringByEvaluatingJavaScriptFromString:script]; | |
| NSLog(returnValue); // Hi, how are you? |
| // Code as written: | |
| @interface MyClass : NSObject { | |
| NSObject *_ivar; | |
| } | |
| @end | |
| @implementation MyClass | |
| - (void)logStuff { |
| const char *path = "/path/to/repo"; | |
| git_repository *r; | |
| git_repository_init(&r, path, 0); | |
| git_reference *git_reference; | |
| git_reference_lookup(&git_reference, r, "HEAD"); | |
| // git_reference == NULL |
| @interface ChildSelectedCell : UITableViewCell | |
| @property (nonatomic) BOOL childSelected; | |
| @end | |
| @implementation ChildSelectedCell | |
| - (void)setChildSelected:(BOOL)childSelected { | |
| if (childSelected == _childSelected) return; | |
| _childSelected = childSelected; |
| // | |
| // ContentViewController.m | |
| // | |
| // Created by Johnnie Walker on 07/06/2013. | |
| // | |
| #import "ContentViewController.h" | |
| @interface ContentViewController () <UITableViewDataSource, UITableViewDelegate> | |
| @property (nonatomic, weak) UITableView *tableView; |
| // | |
| // OutlineTextView.m | |
| // Outline | |
| // | |
| // Created by Johnnie Walker on 10/06/2013. | |
| // | |
| #import "OutlineTextView.h" | |
| #import <CoreText/CoreText.h> |
| // StickyHeadersCollectionViewFlowLayout | |
| // | |
| // A subclass of UICollectionViewFlowLayout which has UITableView style sticky headers. | |
| // | |
| // This code is based on Evadne Wu's code^1, with the following changes: | |
| // | |
| // * Fixes a crash for sections with zero items | |
| // * Adds support for UIScrollView's contentInset | |
| // * Adds support for UICollectionViewFlowLayout's sectionInset | |
| // |
| #import <Foundation/Foundation.h> | |
| #if ! __has_feature(objc_arc) | |
| #error This file must be compiled with ARC. | |
| #endif | |
| @interface Number : NSObject | |
| @property (nonatomic, readonly) NSInteger integer; | |
| + (id)numberWithInteger:(NSInteger)integer; | |
| - (id)initWithInteger:(NSInteger)integer; |
| // build a smooth CGPath from an array of CGPoints (stored as NSValues) | |
| - (CGMutablePathRef)newPathFromPoints:(NSArray *)points { | |
| CGMutablePathRef mutablePath = CGPathCreateMutable(); | |
| NSUInteger pointCount = [points count]; | |
| if (pointCount > 0) { | |
| CGPoint p0 = [points[0] CGPointValue]; |
#Exporting RAW Image Data from PNG files with libpng
This is an Xcode project which uses [libpng][] to export the raw image data from a png file.
Usage:
pngdump source.png destination.dat
This Xcode project links against libpng. On OS X that's available via [homebrew][]