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brief introduction Define configuration Read log-related configuration summary The current part of the code brief introduction In the previous section, we used viper to read the configuration file. logrus is used to log in this section. logrus is a structured logger with fully compatible API s with logger in standard libraries. Define configu ...

Two days ago, I encountered a pit when I was working on a sweeping robot algorithm. Part of the code is as follows: func move2(startPoint Point) [][]Point { allFootPrint := [][]Point{{startPoint}} for i := 0; i < N; i++ { allNewFootPrint := make([][]Point, 0) for len(allFootPrint) > 0 { curFootPrint := ...

In daily development, we all use third-party libraries written by others, so we can also publish our code to github for others to use. First, we need to build a new warehouse named goutil and use public (private warehouse can't be seen by others!). Then clone goes to the local place. git clone https://github.com/startdusk/goutil.git Here we use ...

The advantages of grpc are no longer described, but how to provide Restful interface to the outside world and how to use grpc-gateway to convert grpc to Restful API when there is no desire to develop the same function repeatedly. install go get -u github.com/grpc-ecosystem/grpc-gateway/protoc-gen-grpc-gateway go get -u github.com/micro/protobuf ...

Using the encodong/json standard library built in Go language, we can easily generate and analyze data in JSON format. func Marshal(v interface{}) ([]byte, error) From the return value, we can see that the function has two return values, one is the json code of the incoming parameter v, the type is []b ...

Preface When I blog based on beego, I encountered a strange problem: when using Memory Cache type caching, it's strange that the caching doesn't work, but it's okay to use redis. Because of the time problem, I didn't go deep into it. After all, at that time, I would actually use Memory as a cache. So I put it down, and today someone in the grou ...

Chain customer, specially for developers, there are questions to answer! This article is from Block Chain Technology Community No reprinting without permission. cliqueThe official consensus algorithm of ETF is ethash algorithm, which has been analyzed in detail in the previous article. It is based on POW consensus mechanism. Miners need to calc ...

Pointer This chapter focuses on the application of string, number, array, slice, map, channel, structure and pointer assignment and function parameter transfer.   Character string The string itself is also the structure of StringHeader, which contains the Data pointer and string length, as follows type StringHeader struct { Data uin ...

RKE:Ranchar Kubernetes Engine https://github.com/rancher/rkeBecause RKE is written by golang, download the binary files of the corresponding system directly.Download address: https://github.com/rancher/rk... preparation in advance 1. Ubuntu 16.04.3 LTS version is recommended; if CentOS 7 is used, version 7.3 or more is recommended.2. The hostna ...

Section brief introduction Simply put, slicing is a simplified version of a dynamic array. The length of the Go array cannot be changed, and the length of the slice is not fixed, so the length of the slice is naturally not a component of the type. Although arrays have something to do with them, the types and operations of arrays are not flexi ...