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What is Prefix.pch file in Xcode?
...What is it?
A Prefix.pch is a precompiled header. Precompiled headers were invented to make compiling faster. Rather than parsing the same header files over and over, these files get parsed once, ahead of time.
Xcode
In Xcode, you add imports of the header files you want in a “prefix header,” an...
PHP: Storing 'objects' inside the $_SESSION
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Well, when I asked that question shortly after man invented fire, I didn't know a lot of things I know today... which is just as well. In the meantime I'd say there may be a few good use cases but generally I'd look for other solutions first. Still marking this as the new acc...
Call by name vs call by value in Scala, clarification needed
... Int" vs just Int. Once you've got first-class functions you don't need to invent call-by-name terminology to describe this.
– Ben
Nov 12 '12 at 1:55
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Is there any way to enforce typing on NSArray, NSMutableArray, etc.?
...ple invested in the platform not wishing to concede a point, and therefore inventing reasons why this omission is in fact a benefit.
– funkybro
Aug 7 '13 at 15:56
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Arduino101（Genuino 101）&App Inventor – RGB LED控制 - 创客硬件开...
繁体中文原文：https://blog.cavedu.com/2017/02/ ... %e6%8e%a7%e5%88%b6/
本文將介紹如何取得觸碰點的 RGB 參數之後透過 BLE 送給 Arduino 101 來點亮 RGB LED。
App InventorDesigner使用 Canvas 來取得觸碰點座標。兩個連線斷線用的按鈕：Btn_Connect /&n...
How do you implement a class in C? [closed]
...t away from that by stuffing the method pointers in a class structure, and invent a way for each object instance to reference a class.
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一分钟读懂低功耗蓝牙(BLE) MTU交换数据包 - 创客硬件开发 - 清泛IT社区，...
1.概述
* MTU: 最大传输单元（MAXIMUM TRANSMISSION UNIT） ， 指在一个PDU （Protocol Data Unit： 协议数据单元，在一个传输单元中的有效传输数据）能够传输的最大数据量（多少字节可以一次性传输到对方）。
* MTU 交...
What does a just-in-time (JIT) compiler do?
...ze the performance of code which was published before that new machine was invented.
– supercat
Dec 3 '13 at 18:27
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Unit test naming best practices [closed]
... Remember that when Kent wrote that book. Attributes was not invented. Therefore the name Test in the method name indicated to the test framework that the method was a test. Also alot have happend since 2002.
– Thomas Jespersen
May 15 '10 at 16:0...
What is a rune?
...uence of characters' char*.
But guess what. There are many other symbols invented by humans other than the 'abcde..' symbols. And there are so many that we need 32 bit to encode them.
In golang then a string is a sequence of bytes. However, since multiple bytes can represent a rune code-point, a...