Rob Pike, 是AT&T Bell Lab前Member of Technical Staff ,现在google研究操作系统,Unix先驱,UTF-8的设计人,The Unix Programming Environment 和 The Practice of Programming 的作者之一。 在《 Notes on C Programming 》中从另一个稍微不同的角度表述了 Unix 的哲学(或者说是程序局部优化6原则): 1. 你无法断...
1. 你无法断定程序会在什么地方耗费运行时间。瓶颈经常出现在想不到的地方,所以别急于胡乱找个地方改代码,除非你已经证实那儿就是瓶颈所在。 2. 估量。在你没对代码进行估量,特别是没找到最耗时的那部分之前,别去优化速度。 3. 花哨的算法在 n 很小时通常很慢,而 n 通常很小。花哨算法的常数复杂度很大。除非...
虽然只有第三条是特指Unix系统的,但Unix开发者们常常同时强调这三个信条。 Pike:Notes on Programming in C[编辑] 罗勃·派克在他的《Notes on Programming in C》中提到了以下格言。虽然这些规则是关于程序设计的,但作为Unix哲学丝毫不为过: 你永远不会知道你的程序会在什么地方耗费时间。程序的瓶颈常常出现在...
LECTURE NOTES ON C PROGRAMMINGDr Virginie F. Ruiz
("BBB");TSharedPtr<FJsonValue>valC=MakeShared<FJsonValueString>("CCC");TestArray.Add(valA);TestArray.Add(valB);TestArray.Add(valC);RootObject->SetArrayField("TestArray",TestArray);//向根对象添加对象成员TSharedPtr<FJsonObject>SubObject=MakeShareable(newFJsonObject);SubObject->SetString...
11. Tips on Making readable Programs 12. Tests 12.1. converts 2 fathoms to feet 12.2. convert your weight in rhodium 12.3. Scanning in numbers from a text file and finding the sum,largest number, and product 13. References 13.1. Beginner ...
Notes On Learning CUDA-C Programming Motivation: I record my thoughts/notes/summary on CUDA-C Programming in this repo. Most of notes come from ZheyongFan's awesome CUDA-Programming repo and his published book. Some References A short overview on CUDA-C Programming I write a blog article whi...
The compiler will try to perform template substitution, and it will fail on: template <typename C> static YesType& test( decltype(&C::ToString) ) ; Obviously, there is no int::ToString method so that the first overloaded method will be excluded from the resolution set. But then, the ...
Tables and notes 1 through 12 are based on the "Table of Intrinsic Functions," from ANSI X3.9-1978 Programming Language FORTRAN, with the FORTRAN extensions added.(1) INT If A is type integer, then INT(A) is A.If A is type real or double precision, then:if...
Source Code:http://doxygen.postgresql.org/deadlock_8c_source.html My Post: TODO Reactor & Proactor:Comparing Two High-Performance I/O Design Patterns An example will help to understand the difference between Reactor and Proactor. We will focus on the read operation here, as the write implement...