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##Logging in Cocoa

There are a ton of ways and frameworks for logging in your project. At the following I will describe the way it works for me.

For me it's not so important to have multiple loggers, meaning I can log to a file and the console simultaneously. If you look for such a solution, I recommend to look in the CocoaLumberjack or the NSLogger framework.

My focus is: Log information to the console in a simple way, without any extra dependences and configurable for the debug or the release setting.

My preferred way to get this, is to use macros. The macros are placed at the end of the Prefix.pch file of your project and looks like the following:

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//
//  GIFLoader.h
//  AnimatedGifExample
//
//  Created by Andrei on 10/15/12.
//  Copyright (c) 2012 Whatevra. All rights reserved.
//

#import <Foundation/Foundation.h>

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// Playground - noun: a place where people can play

import Cocoa

extension NSRange {

    init(location:Int, length:Int) {
        self.location = location
        self.length = length
    }

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import Foundation

struct Point {
    var x = 0.0
    var y = 0.0
}

class PropertyHub {
    var simpleProp = "Foo"
    var structProp = Point()

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shell判断文件,目录是否存在或者具有权限
  #!/bin/sh

Path="/var/log/httpd/"
File="/var/log/httpd/access.log"

#这里的-x 参数判断$Path是否存在并且是否具有可执行权限
if [ ! -x "$Path"]; then
mkdir "$Path"
fi

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#import <CoreText/CoreText.h>
 
@interface NSAttributedString (Height)
-(CGFloat)boundingHeightForWidth:(CGFloat)inWidth;
@end

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import Foundation

extension String
{
    var length: Int {
        get {
            return countElements(self)
        }
    }
    

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Interface for dealing with gesture recognizers via native swift closure syntax

import UIKit

class ViewController: UIViewController {
                            
    override func viewDidLoad() {
        super.viewDidLoad()
 view.addSingleTapGestureRecognizerWithResponder { (tap) -> Void in

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Copyright 2015 Chris Eidhof

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHE

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Videos

• Introduction to Functional Programming Johannes Weiß - http://kcy.me/1ngiv
• ReactiveCocoa at MobiDevDay Andrew Sardone - http://kcy.me/1nhl3
• The Future Of ReactiveCocoa Justin Spahr-Summers - http://kcy.me/1nhs7
• Enemy of the State Justin Spahr-Summers - http://kcy.me/1njzs
• WWDC 2014 Session 229 - Advanced iOS Application Architecture and Patterns Andy Matuschak - http://kcy.me/1pyva
• Functioning as a Functionalist Andy Matuschak - http://kcy.me/22o45
• Controlling Complexity in Swift Andy Matuschak - http://kcy.me/23sc9
• Functional and reactive programming with Swift Ash Furrow -