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C language simulates blockchain
Publish: 2021-04-16 16:19:53
1. Go language + blockchain training course:
why should we learn go language and what are the advantages of go
1. What are the advantages of go
1: performance
2: language performance is very important
3: developer efficiency & don't be too innovative
4: concurrency & Channel
5: fast compile time
6: team building ability
7: powerful ecosystem
8: gofmt, Mandatory code format
9: grpc and protocol buffers
can be directly compiled into machine code, independent of other libraries. Glibc version has certain requirements, and deployment is completed by throwing a file
static type language has the feeling of dynamic language. Static type language can check out most hidden problems when compiling, while dynamic language has the feeling that there are many packages that can be used and the efficiency of writing is very high.
why should we learn go language and what are the advantages of go
1. What are the advantages of go
1: performance
2: language performance is very important
3: developer efficiency & don't be too innovative
4: concurrency & Channel
5: fast compile time
6: team building ability
7: powerful ecosystem
8: gofmt, Mandatory code format
9: grpc and protocol buffers
can be directly compiled into machine code, independent of other libraries. Glibc version has certain requirements, and deployment is completed by throwing a file
static type language has the feeling of dynamic language. Static type language can check out most hidden problems when compiling, while dynamic language has the feeling that there are many packages that can be used and the efficiency of writing is very high.
2. Go language is the mainstream language of blockchain
according to the data survey of boss Research Institute, go and C + + are the mainstream languages of blockchain Posts currently recruited. The early blockchain system and application
programs are mainly implemented in C + +, and now most companies will use go language to
build public chain systems<
C + + is suitable for the development of local programs.
go language is suitable for the development of network programs and local programs.
compared with C + + go, it has the following advantages:
garbage collection
clear meaning
unified format
disadvantages:
efficiency is not as high as C + + at present, but for desktop programs, efficiency is not a big problem, Because hardware is fast growing.
C + + is the mainstream language at present, and I believe it will become a classic just like C.
to become a classic means that people who learn it can get a good salary, but it is only good for themselves.
in the future network world, go will have a big chance to get hot, I think it has a bright future.
the developers of go, including the founders of UNIX and C language, are the first generation of hackers, and I believe they will do a good job.
now the go stack + blockchain market is out of an unprecedented gale, and the situation is gratifying.
according to the data survey of boss Research Institute, go and C + + are the mainstream languages of blockchain Posts currently recruited. The early blockchain system and application
programs are mainly implemented in C + +, and now most companies will use go language to
build public chain systems<
C + + is suitable for the development of local programs.
go language is suitable for the development of network programs and local programs.
compared with C + + go, it has the following advantages:
garbage collection
clear meaning
unified format
disadvantages:
efficiency is not as high as C + + at present, but for desktop programs, efficiency is not a big problem, Because hardware is fast growing.
C + + is the mainstream language at present, and I believe it will become a classic just like C.
to become a classic means that people who learn it can get a good salary, but it is only good for themselves.
in the future network world, go will have a big chance to get hot, I think it has a bright future.
the developers of go, including the founders of UNIX and C language, are the first generation of hackers, and I believe they will do a good job.
now the go stack + blockchain market is out of an unprecedented gale, and the situation is gratifying.
3. The rise of every emerging technology is accompanied by so-called bubbles. When technology is mature and value is expressed, this argument will disappear in history, and regret a previous mistake (focus on the learning block chain).
4. What is the best exchange in Korea
5. CG century exchange, which has been online for a long time, is designed to let more people experience the real digital currency trading environment, enhance their risk awareness, learn professional investment skills and blockchain knowledge, and make more friends in the currency circle. Recently, a blockchain exchange has directly launched a contract trading simulation disk, in which users can fully simulate real-time operation, Skilled before entering the formal contract transaction.
6. Unknown_Error
7. Technology has nothing to do with language. Under normal circumstances, the same technology, in the case of permission, most languages can achieve the same function. You should be talking about the technology of virtual currency. This source code is usually developed by C + +.
8. C language fprintf statements, when the output is successful, its return value is the correct number of characters written. If the output error, the return value is negative, you can use ferror to find the error
when using fprintf to output, add another sentence printf (format and parameters are similar to fprintf), and the output content can be displayed on the screen
assume that the file name to be copied is a.dat and the file name to be copied is B.dat,
C language uses & system; type a.dat"); And & system; type b.dat"); Two files are displayed
the most accurate and fashionable method is to compare whether the files before and after ing are correct. You can use the technology in "blockchain" to obtain the "watermark" - hash code "of the files< br />system(" CertUtil -hashfile a.dat SHA512 > hx_ a.dat"); // Output the hash code of a.dat and store it in HX_ a.dat
system(" CertUtil -hashfile b.dat SHA512 > hx_ b.dat"); // Output the hash code of B.dat and store it in HX_ b. Dat
and then compared with HX_ a. DAT and HX_ b. DAT, so that you can confirm that the is 100% correct< The length of SHA512 hash code is 512 bytes. You can also choose other formats Check the instructions of certutil.exe in Windows system.)
when using fprintf to output, add another sentence printf (format and parameters are similar to fprintf), and the output content can be displayed on the screen
assume that the file name to be copied is a.dat and the file name to be copied is B.dat,
C language uses & system; type a.dat"); And & system; type b.dat"); Two files are displayed
the most accurate and fashionable method is to compare whether the files before and after ing are correct. You can use the technology in "blockchain" to obtain the "watermark" - hash code "of the files< br />system(" CertUtil -hashfile a.dat SHA512 > hx_ a.dat"); // Output the hash code of a.dat and store it in HX_ a.dat
system(" CertUtil -hashfile b.dat SHA512 > hx_ b.dat"); // Output the hash code of B.dat and store it in HX_ b. Dat
and then compared with HX_ a. DAT and HX_ b. DAT, so that you can confirm that the is 100% correct< The length of SHA512 hash code is 512 bytes. You can also choose other formats Check the instructions of certutil.exe in Windows system.)
9. Blockchain technology is very deep. If you want to learn this, you should start with basic knowledge. It is suggested to go to 900 million finance and economics to see the knowledge of blockchain technology. There is also the basic knowledge of blockchain technology.
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