Detailed analysis of sample codes for performance comparison of golang, python, php, c++, c, java, and Nodejs
This article mainly introduces relevant information on the performance comparison of golang, python, php, c++, c, java, and Nodejs. Friends in need can refer to it When I was working in PHP/C++/Go/Py, I suddenly encountered I had an idea and wanted to make a simple comparison of the performance of the recent mainstream programming languages. As for how to compare, I still have to use the magical Fibonacci algorithm. Maybe it’s more commonly used or fun. Okay, talk is cheap, show me your code! Open your Mac, click on Clion and start coding! 1. Why is Go the first one? Because I am using it personally recently and I feel very good. package main import “fmt” func main(){ fmt.Println(fibonacci(34)) } func fibonacci(i int) int{ if(i<2){ return i; } return fibonacci(i-2) + fibonacci(i-1); } Let’s take a look with Go1.7 first: The code is as follows: qiangjian@ localhost:/works/learnCPP$ go version && time go build fib.go && time ./fibgo version go1.7.5 darwin/amd64 real 0m0.206suser 0m0.165ssys 0m0.059s real 0m0.052suser 0m0.045ssys 0m0.004s Then, look at 1.8: The code is as follows: qiangjian@localhost:/works/learnCPP$ go18 version && time go18 build fib.go && time ./fibgo version go1.8 darwin/amd64 real 0m0.204suser 0m0.153ssys 0m0.062s real 0m0.051suser 0m0.045ssys 0m0.003s I…
Which of C, C++, MATLAB, Python and Go is more suitable for writing algorithms? -Python Tutorial
Programming background: I am not a computer-related major. I am majoring in basic subjects such as mathematics and physics. I have just studied C language by myself and finished reading C primer plus. I have a preliminary understanding of the entire language, but I don’t have much programming experience. I have only briefly looked at the contents of classes and inheritance and the ideas of OOP in C++, but I haven’t gotten started yet. You will need to learn matlab soon because it will be used in numerical calculations and data visualization. I have no contact with python and Go language at all. The main purpose of learning programming at present is not to do projects, find a job, or write papers, but to write programs to implement algorithms when learning algorithms using the book “Introduction to Algorithms”, or to model and analyze some interesting things. For algorithms, what I care about is not the specific implementation details, but the ideas and mathematical principles behind them. I heard that when writing algorithms in C/C++, they spend a lot of time processing and implementing related details, while writing algorithms in Java and python can focus more on the connotation of the…
Which of C, C++, MATLAB, Python and Go is more suitable for writing algorithms?
Programming background: I am not a computer-related major. I am majoring in basic subjects such as mathematics and physics. I have just studied C language by myself and finished reading C primer plus. I have a preliminary understanding of the entire language, but I don’t have much programming experience. I have only briefly looked at the contents of classes and inheritance and the ideas of OOP in C++, but I haven’t gotten started yet. You will need to learn matlab soon because it will be used in numerical calculations and data visualization. I have no contact with python and Go language at all. The main purpose of learning programming at present is not to do projects, find a job, or write papers, but to write programs to implement algorithms when learning algorithms using the book “Introduction to Algorithms”, or to model and analyze some interesting things. For algorithms, what I care about is not the specific implementation details, but the ideas and mathematical principles behind them. I heard that when writing algorithms in C/C++, they spend a lot of time processing and implementing related details, while writing algorithms in Java and python can focus more on the connotation of the…
Golang, python, php, c++, c, java, Nodejs performance comparison
When I was working in PHP/C++/Go/Py, I suddenly had the idea to make a simple comparison of the performance of the recent mainstream programming languages. As for how to compare, I still had to use the magical Fibonacci algorithm. Maybe it’s more commonly used or fun. Okay, talk is cheap, show me your code! Open your Mac, click on Clion and start coding! 1. Why is Go the first one? Because I am using it personally recently and it feels very good. package main import “fmt” func main(){ fmt.Println(fibonacci(34)) } func fibonacci(i int) int{ if(i<2){ return i; } return fibonacci(i-2) + fibonacci(i-1); } Let’s take a look with Go1.7 first: The code is as follows: qiangjian@localhost:/works/learnCPP$ go version && time go build fib.go && time ./fib go version go1.7.5 darwin/amd64 real 0m0.206s user 0m0.165s sys 0m0.059s real 0m0.052s user 0m0.045s sys 0m0.004s Then, let’s take a look at 1.8: The code is as follows: qiangjian@localhost:/works/learnCPP$ go18 version && time go18 build fib.go && time ./fib go version go1.8 darwin/amd64 real 0m0.204s user 0m0.153s sys 0m0.062s real 0m0.051s user 0m0.045s sys 0m0.003s I can’t see the difference, but the official 1.8 has improved optimization by 20% in aspects such as GC…
An article to help you understand the analysis of parameter passing principles (java, go, python, c++)
Foreword In the past year or so, I have been exposed to some languages that are unfamiliar to me, mainly Python and Go. During this period, in order to quickly realize the needs, I just followed the example. Lao’s code; I didn’t delve into some details and principles. Take parameter passing as an example. The implementation details of each language are different, but there are similarities; it is easy for many novices to be confused when they get started, leading to some low-level mistakes. Java Basic type transfer Let’s take Java, which I am most familiar with, as an example. I believe no one can write such code: @Test public void testBasic() { int a = 10; modifyBasic(a); System.out.println(String.format(“Final result main a==%s”, a)); } private void modifyBasic(int aa) { System.out.println(String.format(“aa==%s”, aa)); aa = 20; System.out.println(String.format(“After modification aa==%s”, aa)); } Output results: Before modification aa==10 After modification aa==20 Final result main a==10 However, judging from the purpose of this code, it should be to modify the value of a. Intuitively, it is understandable if the modification is successful. The fundamental reason why the results are not in line with expectations is the misunderstanding of parameter value passing and reference passing. Before…
MongoDB,C#,QueryFailure flag is not master but slaveOk=false
mongodb c# asp.net mvc Write your review! Come on, watch it all Member login | User registration Recommended reading io c# – Intercepting NHibernate LazyLoad behavior returning null if not connected to session? This seems like something that should be an obvious thing, but I’ve been searching for an answer for hours without success. I’m using NHibernate to persist a domain model, with a service layer serving an ASP.NET MVC frontend (the “service layer” is currently just a … [detailed] Crayon Shin-chan 2023-10-16 17:37:03 io How to fix the length of a string in C# and fill it with spaces if it is not enough string.PadLeft or string.PadRight: string.PadLeft means that if the length of a string is less than the specified value, the left side (that is, the front) of the string will be filled with the specified characters until… [detailed] Crayon Shin-chan 2023-10-17 16:37:29
pythonphp performance comparison_golang, python, php, c++, c, java performance comparison
Original title：Performance comparison of golang, python, php, c++, c, and java Golang, python, php, c+& in 2017 #43;, c, java, Nodejs performance comparison When I was working on PHP/C’/Go/Py, I had a sudden idea and wanted to make it mainstream recently. To make a simple comparison of the performance of programming languages - as for how to compare – we still have to use the magical Fibonacci algorithm. Maybe it’s more commonly used or fun. Okay，talk is cheap, show me your code! Open Mac，Click on Clion and start coding！ 1. Why is the first What about Go? Because I personally am using it recently and it feels very good. package main import “fmt” func main{ fmt.Println(fibonacci(34)) } func fibonacci(i int ) int{ if(i<2){ return i; } return fibonacci(i-2) + fibonacci(i-1); } Let’s take a look with Go1.7 first： ; qiangjian@localhost:/works/learnCPP$ go version && time go build fib.go && time ./fib go version go1.7.5 darwin/amd64 real 0m0.206s user 0m0.165s sys 0m0.059s 5702887 real 0m0.052s user 0m0.045s sys 0m0.004s Then，Look at 1.8’s： qiangjian@localhost: /works/learnCPP$ go18 version && time go18 build fib.go && time ./fib go version go1.8 darwin/amd64 real 0m0.204s user 0m0.153s sys 0m0.062s 5702887 real 0m0.051s user 0m0.045s sys 0m0 .003s…
TensorFlow’s API document address, interface and help documentation, TensorFlow opens Python, Java, C, Go interfaces
API Documentation TensorFlow has APIs in multiple languages that can be used to build and execute TensorFlow graphs. The Python API is currently the most complete and easiest to use, but other language APIs may be easier to integrate into projects and may provide some performance advantages in graph execution. Please note: APIs other than Python are not yet fully complete. Specific API coverage information: API stability promises. Python C Java Go We also provide a C API reference for TensorFlow Serving: : TensorFlow Serving We also encourage the community to develop and maintain support for other languages: approach recommended by the TensorFlow maintainers. For example, see the following languages: C#, Haskell, Julia, Ruby, Rust , and Scala.
Eight Queens: python, ruby, C, go comparison
The war of words between python and ruby on the Internet has never stopped. Some people say python is slow. Some people say ruby is slower. Some people say python is beautiful. Some people say ruby is more beautiful. What’s going on?？ We won’t do a large and comprehensive evaluation，Let’s take a peek from the simple brute force search program to find the method number of the N Queen problem： The following is the code： 1 N=13 2 col=[0] *N 3 d1=[0]*(N*2) 4 d2=[0]*(N*2) 5 ret=0 6 def dfs(x): 7 global ret 8 if x==N: 9 ret& #43;=110 else:11 for i in xrange(N):12 if col[i]&# 61;=0 and d1[i+x]==0 and d2[i-x+N] ==0:13 col[i],d1[i+x],d2[i-x+ N]=1,1,114 dfs(x+1)15 col[ i],d1[i+x],d2[i-x+N]=0,0,016 dfs(0)17 print ret According to the python code， I adapted it in each language Version’ gif” alt=”” />ruby 1 N=13 2 $col=[0]*N 3 $d1=[0]*(N*2) 4 $d2=[0]*(N*2) 5 $ret=0 6 def dfs(x) 7 if x==N 8 $ret +=1 9 else10 N.times do |i|11 if $col[ i]==0 and $d1[i+x]==0 and $d2[i-x+N]==0 12 $col[i]=$d1[i+x]=$d2 [i-x+N]=113 dfs x+114 $col[i]=$d1[i+x]= $d2[i-x+N]=015 end16 end17 end18 end19 dfs 020 puts $ ret C(C++) 1 #include 2 using namespace std; 3 const int N=13; 4 int col[ N],d1[N+N],d2[N+N]; 5 int ret= ;0;…
Understanding of language interfaces in C, C, and golang
I have only used C and C before, and I only have a logical understanding of the concept of interface. I think it is a channel that connects code writers and users. Now I have come into contact with GO language, interface { }) is an important feature of GO, so we decided to sort out and compare the interface features of C, C and GO. C Language The interface concept of C language is relatively simple. When only the basic usage of C language is discussed (without simulation of object-oriented usage) Below, the coupling between its interface and the user is the highest. If the user wants to call a certain piece of functional code, he usually needs to obtain the interface type by including the header file. Interface users do not need to care about the specific implementation of the interface. As long as the interface remains unchanged (the part in the header file), we can freely modify the interface implementation code. C is an emotional sharp knife. It provides you with a very specific method. The method of use is single and the scalability is poor (It seems a bit off topic… But let’s discuss it again.…
