Interfacego Ethereum

1. Go full stack + blockchain course:
a total of 22 weeks, divided into five stages,
the first stage is 4 weeks, go language foundation and network concurrency, learning the introctory go language,
the second stage is 4 weeks, go language practical web development, crawler development, cryptography, consensus algorithm, realizing lightweight public chain, learning the website and crawler that can develop golang, Achieve lightweight blockchain
stage 3, 4-week Ethereum source code analysis and smart contract DAPP development, master Ethereum core and smart contract development, as well as blockchain,
stage 4, 4-week super ledger, bitcoin EOS, source code analysis and smart contract practice, master super ledger development, cat bitcoin, bifurcated EOS after learning, As well as DAPP development of smart contract
phase 5, 6-week project practice, five enterprise level projects, and one year of blockchain project experience after learning
from the characteristics of the language itself, go is a very efficient language, which highly supports concurrency. Go language itself pays more attention to distributed system, and concurrency processing is relatively good, such as advertising and search, That kind of high concurrency server
go language advantages:
excellent performance, can be directly compiled into machine code, does not rely on other libraries, go is extremely fast. Its performance is similar to Java or C + +
concurrency is supported at the language level, which is the biggest feature of go. It is born to support concurrency, and go is the concurrency supported in gene, which can make full use of multi-core and make it easy to use concurrency
the built-in runtime supports garbage collection, which is one of the features of dynamic language. Although GC is not perfect at present, it is enough to cope with most of the situations we can encounter, especially GC after go1.1
it's easy to learn. The authors of go language all have the gene of C, so go naturally has the gene of C. There are 25 go keywords, but the expressive ability is very strong. It almost supports most of the features you've seen in other languages: inheritance, overloading, object, etc
rich standard libraries, go has built a large number of libraries, especially the network library, which is also my favorite part< As like as two peas, br / > built-in powerful tools, Go language is built with many tools chain, the best should be gofmt tools, automatic formatting code, make team review become so simple, code format is exactly the same, it is very difficult to think differently.
cross platform compilation and fast compilation. Compared with the sluggish compilation speed of Java and C + +, the fast compilation time of go is a major efficiency advantage
disadvantages of go language:
package management: package management of go language is absolutely not perfect. By default, it has no way to make a specific version of the dependency library, nor can it create replicable builds. In contrast, python, node and Ruby all have better package management systems. However, with the right tools, the package management of go language can also perform well
lack of development framework: go language does not have a major framework, such as Ruby's rails framework, Python's Django framework or PHP's laravel. This is a heated discussion in the go language community, because many people think that we should not start with using frameworks. This is true in many cases, but if you just want to build a simple crud API, it's much easier to use Django / djrf, rails laravel, or Phoenix
exception handling: go language can help developers deal with compilation errors by simply returning errors (or call stack) through functions and expected calling codes. Although this method is effective, it is easy to lose the scope of the error, so it is difficult to provide meaningful error information to users. Error package can solve this problem by allowing us to add context and stack trace to return error
another problem is that we may forget to handle errors. Static analysis tools such as errcheck and megacheck can avoid these errors. Although these solutions are very effective, they may not be the right way.

2. Ethereum source code

3. Storage capacity: it is the maximum amount of data that can be stored on the storage device. It is usually measured by kilobyte (KB
kilobyte), megabyte (MB
megabyte), Gigabyte (GB,
Gigabyte), terabyte (TB
terabyte), petabyte (petabyte), EB (Exabyte), etc< br />1KB=2(10)B=1024B
the number in brackets is the exponent of 2 (i.e. the power)
1MB = 2 (10) KB = 1024KB = 2 (20) B< br />1GB=2(10)MB=1024MB=2(30)B
1TB = 2 (10)
GB = 1024gb = 2 (40) B
1PB = 2 (10)
TB = 1024tb = 2 (50) B
1eb = 2 (10)
Pb = 1024pb = 2 (60) B
1byte
kilobyte (KB) = 1024b is equivalent to the content of a short story
megabyte (MB) = l024kb, which is equivalent to the text content of a short story
Gigabyte (GB) = 1024MB, equivalent to the score of Beethoven's fifth movement symphony
terabyte (TB) = 1024gb, which is equivalent to all the X-ray information in a large hospital
petabyte (PB) = l024tb, which is equivalent to 50% of the information content of academic research libraries in the United States< br />Exabyte
(EB)=1024PB 5eb is equivalent to the words spoken by human beings all over the world
zettabyte (ZB) = 1024eb, like the total amount of sand on beaches all over the world
yottabyte (Yb) = 1024zb, which is equivalent to the total number of micro cells in 7000 human beings.

4. In the crow rock mine of soxham, the first town to go by boat. When you get to the dock and go left, you will see a mine. There are two NPCs fighting in it. Talking to the male NPCs will give you a task to explore the mine. After you finish, you will get a two handed sword, which can cut a bare blade. Go to the NPC when the task is finished, and he will give you an ancient Nord pick.

5. Unknown_Error

6. 1t = 1024g, 1g = 1024m, 1m = 1024k, 1K = 1024b, 2b is equal to one Chinese character

7.

Compared with the 150 W RX 480, the power consumption of Rx 470 is about 120 W

The parameters of

RX 470 are:

video memory capacity: 4096m

output interface: 1 × HDMI interface, 3 × Display port interface

video memory type: gddr 5

core frequency: 926-1206mhz

video memory frequency: 1650mhz

extended data:

problems to pay attention to when selecting a video card:

1. Slot: first, check whether the motherboard supports PCI-E and AGP sockets at the same time, If only one type is supported, select the appropriate type of graphics card

2. Resolution: the resolution of the graphics card is not the higher the better, but should correspond to the highest resolution of the computer display, if the display only supports 1280 × 1024, so it's not worth spending more money on high-resolution graphics cards

3. Video memory: the full name of video memory is display memory. Its main function is to store all kinds of data processed by the display chip. The larger the capacity is, the higher the mapping accuracy will be. Therefore, in a sense, the performance of video memory will be significantly improved

Manufacturers: try to buy the procts of large companies with R & D capabilities, because these manufacturers will never use immature public board design, and will improve their circuit layout and materials to make them more stable, but often the procts come to the market later

8. 7950 has 1792 stream processors
7850 only has 768 stream processors

the more stream processors mining, the better