原文 https://blog.changyy.org/2014/06/ios-core-text-paragraphs-lines-glyph.html[https://b...
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IP屬地：河南
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初探Core Text 架構(gòu)：paragraphs, lines, glyph runs and glyph -
iOS 啟動(dòng)優(yōu)化
啟動(dòng)優(yōu)化思考 在面試時(shí)遇到這個(gè)問題肾胯，很多人信手拈來瘤泪，上來就說：+load岩齿、減少離屏渲染元旬、二進(jìn)制重排等赖草。不得不說闹究，針對這個(gè)問題狈孔，這確實(shí)很重要的一環(huán)喧半，對于工作 3 年左右的工程師...
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越努力挺据，越幸運(yùn)取具。可愛的童鞋看這里??大家可以關(guān)注 微-信 公-眾-號(hào) ：Style月月專欄扁耐，文章同簡書同步喲~
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iOS：self.xx vs self->_xx vs _xx
基本理解 self.xx 是對類的屬性訪問暇检，會(huì)調(diào)用getter、setter方法婉称； _xx 是直接對實(shí)例變量的操作块仆； _xx 類似于 self->_xx（類外肯定沒法用 _x...
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iOS 對self和super的理解
答案：都輸出 Son self 是類的隱藏參數(shù)，指向當(dāng)前調(diào)用方法的這個(gè)類的實(shí)例王暗。而 super 是一個(gè) Magic Keyword悔据， 它本質(zhì)是一個(gè)編譯器標(biāo)示符，和 self ...
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iOS 查看設(shè)備列表（包括模擬器）
How to list devices available to Xcode 原文[http://mokagio.github.io/tech-journal/2015/03...
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iOS轉(zhuǎn)場動(dòng)畫入門概述 本文內(nèi)容是直接從github上找了一個(gè)demo肛捍，分析了下其源碼實(shí)現(xiàn)，僅供入門參考之众，原始鏈接：https://github.com/YanLYM/YMTransition...
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感謝大家一直以來的陪伴, 我的GitHub (<a href="https://links.jianshu.com/go?to=https%3A%2F%2Fgithub.com%2FZLFighting" target="_blank">https://github.com/ZLFighting</a>), 期待下個(gè)路口相遇!<br>開發(fā),不僅僅是敲代碼,更是高雅的彈鋼琴~
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拖拽生成flutter代碼工具
新手對flutter布局不熟悉，可以上這個(gè)地址：https://ui.flutterdart.cn/ 通過拖拽代碼可以更好的學(xué)習(xí)flutter布局膘婶，寫一些比較簡單的頁面也可以...
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廣告相關(guān)術(shù)語
OTV OTV即Online TV悬襟，所以O(shè)TV廣告是線上視頻的廣告衅码，具體可以是貼片廣告、插播廣告脊岳、創(chuàng)可貼廣告等這是區(qū)別于TVC的逝段，TVC就是TV Commercials垛玻，電視...
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Using Custom Keys
In most cases, Cocoa-provided objects such as NSString objects should be sufficient for use as keys. In some cases, however, it may be necessary to use custom objects as keys in a dictionary. When using custom objects as keys, there are some important points to keep in mind.
Keys must conform to the NSCopying protocol. Methods that add entries to dictionaries—whether as part of initialization (for all dictionaries) or during modification (for mutable dictionaries)— don’t add each key object to the dictionary directly. Instead, they copy each key argument and add the copy to the dictionary. After being copied into the dictionary, the dictionary-owned copies of the keys should not be modified.
Keys must implement the hash and isEqual: methods because a dictionary uses a hash table to organize its storage and to quickly access contained objects. In addition, performance in a dictionary is heavily dependent on the hash function used. With a bad hash function, the decrease in performance can be severe. For more information on the hash and isEqual: methods see NSObject.
Important: Because the dictionary copies each key, keys must conform to the NSCopying protocol. Bear this in mind when choosing what objects to use as keys. Although you can use any object that adopts the NSCopying protocol and implements the hash and isEqual: methods, it is typically bad design to use large objects, such as instances of NSImage, because doing so may incur performance penalties.
感覺這里解釋得更清楚啊。roylly 評(píng)論自iOS使用自定義對象作為NSDictionary的key探索 -
目錄篇
未分類 SQL基礎(chǔ)[http://www.reibang.com/p/3cc6a1740d1b] 向前兼容和向后兼容[http://www.reibang.com/p/7...
