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extension UIViewController {
    
    // Nav tag id
    private var fakeNavTag: Int{get{return 80327}}
    
    // Remove bar bar color and add fake nav bar
    public func loadFakeNavigationBar(){
        removeNavigationBarBackground()
        addFakeNavigationBar()
    }

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class PushDissolveAnimationSegue: UIStoryboardSegue {
    
    override func perform() {
        let transition = CATransition()
        
        transition.duration = 0.2
        transition.type = kCATransitionFade
        
        self.sourceViewController.navigationController!.view.layer.addAnimation(transition, forKey: kCATransition)
        self.sourceViewController.navigationController!.pushViewController(self.destinationViewController, animated: false)

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func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
    let text = collections[indexPath.row].name
    let width = UILabel.textWidth(font: titleFont, text: text)
    return CGSize(width: width + left + right, height: height)
}

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// Call this in layoutSubView or viewDidLoad
self.imageView.layer.sublayers?.forEach { $0.removeFromSuperlayer() }
        
let width = self.bounds.width
let height = self.bounds.height
let sHeight:CGFloat = 60.0
let shadow = UIColor.black.withAlphaComponent(0.6).cgColor

// Add gradient bar for image on top
let topImageGradient = CAGradientLayer()

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extension UILabel {
    func textWidth() -> CGFloat {
        return UILabel.textWidth(label: self)
    }

    class func textWidth(label: UILabel) -> CGFloat {
        return textWidth(label: label, text: label.text!)
    }

    class func textWidth(label: UILabel, text: String) -> CGFloat {

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func countLabelLines(label: UILabel) -> Int {
    // Call self.layoutIfNeeded() if your view uses auto layout
    let myText = label.text! as NSString

    let rect = CGSize(width: label.bounds.width, height: CGFloat.greatestFiniteMagnitude)
    let labelSize = myText.boundingRect(with: rect, options: .usesLineFragmentOrigin, attributes: [NSAttributedStringKey.font: label.font], context: nil)

    return Int(ceil(CGFloat(labelSize.height) / label.font.lineHeight))
}

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Running Node Modules in React Native

How to use packages that depend on Node.js core modules in React Native.

Node.js Core Modules

Node has several modules that are automatically available via require(): http, crypto, etc. While these modules are available in Node, they are not automatically available in other environments

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    NSString *urlString = [NSString stringWithFormat:@"http://example.com/foo"];
    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:urlString]];
    // get User Agent in UIWebView
    UIWebView *webView = [[UIWebView alloc] initWithFrame:CGRectZero];
    NSString *userAgent = [webView stringByEvaluatingJavaScriptFromString:@"navigator.userAgent"];
    NSLog(@"UserAgent: %@", userAgent);
    [webView release];    

    [request setValue:userAgent forHTTPHeaderField:@"User-Agent"];
    NSURLResponse *response;

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// Interface to the values stored in the Config.plist resource file

@interface KDJConfig : NSObject

// Return singleton instance
+ (KDJConfig *)sharedConfig;

// Return string value with specified key from Config.plist, or default value if not specified in the file
- (NSString *)stringForKey:(NSString *)key defaultValue:(NSString *)defaultValue;

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package org.cocos2dx.lib;

import java.io.Writer;
import java.lang.ref.WeakReference;
import java.util.ArrayList;

import javax.microedition.khronos.egl.EGL10;
import javax.microedition.khronos.egl.EGL11;
import javax.microedition.khronos.egl.EGLConfig;
import javax.microedition.khronos.egl.EGLContext;