sgr-ksmt

extension DispatchQueue {
    class func mainSyncSafe(execute work: () -> Void) {
        if Thread.isMainThread {
            work()
        } else {
            DispatchQueue.main.sync(execute: work)
        }
    }

    class func mainSyncSafe<T>(execute work: () throws -> T) rethrows -> T {

ChrisXu

language: objective-c
osx_image: xcode7.2
xcode_sdk: iphonesimulator9.2

env:
  global:
  - LANG=en_US.UTF-8
  - WORKSPACE="YOUR_APP_WORKSPACE/YOUR_APP_PROJECT.xcworkspace"
  - SCHEME="YOUR_BUILDSCHEME"
  - APP_NAME="YOUR_APP_NAME"

taoyuan

# npm using https for git
git config --global url."https://github.com/".insteadOf [email protected]:
git config --global url."https://".insteadOf git://

# npm using git for https
git config --global url."[email protected]:".insteadOf https://github.com/
git config --global url."git://".insteadOf https://

ymyzk

private func example1() {
    let queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0)
    for i in 0..<10 {
        dispatch_async(queue) {
            NSLog("Start: \(i)")
            sleep(3)
            NSLog("End: \(i)")
        }
    }
}

kevinmcmahon

- (UIImage *)imageWithColor:(UIColor *)color {
    CGRect rect = CGRectMake(0.0f, 0.0f, 1.0f, 1.0f);
    UIGraphicsBeginImageContext(rect.size);
    CGContextRef context = UIGraphicsGetCurrentContext();

    CGContextSetFillColorWithColor(context, [color CGColor]);
    CGContextFillRect(context, rect);

    UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();