effective go book

1. What is effective go?
2. How do I write a good Golang code?
3. Does Go require a semicolon?
4. Can a beginner learn Golang?
5. What is the difference between make and new in Golang?
6. Why we use Golang?
7. How do you refactor code?
8. How do you start a project?
9. What is my Goroot?
10. How do you write idiomatic go?
11. What is new keyword in Golang?

What is effective go?

Effective Go is something to refer to as you begin to write your first projects in the language. If you're familiar with other programming languages, it may or may nor make sense to you before you've written a few hundred lines, depending on whether the topics they cover have natural parallels.

How do I write a good Golang code?

Readability is the defining quality of good code, thus choosing good names is crucial to the readability of Go code.

1. 2.1. Choose identifiers for clarity, not brevity. ...
2. 2.2. Identifier length. ...
3. 2.3. Don't name your variables for their types. ...
4. 2.4. Use a consistent naming style. ...
5. 2.5. Use a consistent declaration style. ...
6. 2.6.

Does Go require a semicolon?

needs no semicolons. Idiomatic Go programs have semicolons only in places such as for loop clauses, to separate the initializer, condition, and continuation elements. They are also necessary to separate multiple statements on a line, should you write code that way.

Can a beginner learn Golang?

Go is easy enough for a beginner to pick up, though outside of the Go Tour, there aren't many tutorials that introduce basic programming concepts AND Go. Learning Go is easier for someone who has experience in other languages and can pick up another language easily, or for self-directed learners.

What is the difference between make and new in Golang?

New does not initialize the memory, it only zeros it. It returns a pointer to a newly allocated zero value. Make creates slices, maps, and channels only, and it returns them initialized.

Why we use Golang?

Golang is very useful for writing light-weight microservices. We currently use it for generating APIs that interact with our front-end applications. If you want to build a small functional microservice quickly, then Golang is a great tool to use. It's an easy language for developers to learn quickly.”

How do you refactor code?

Refactoring with go fmt

1. go build – compile the code.
2. go install – install (and build) a package.
3. go get – download and install packages including dependencies.
4. go test – run test suites and benchmarks.
5. go doc – generate and view documentation.
6. go fmt – format and refactor your code.
7. go run – build and run an app.

How do you start a project?

Starting a Go Project

1. brew install go. ...
2. sudo add-apt-repository ppa:longsleep/golang-backports sudo apt-get update sudo install golang-1.14 echo 'export PATH=$PATH:/usr/lib/go-1.14/bin' >> ~/.bashrc source ~/.bashrc. ...
3. go version. ...
4. cd ~/Code/goprojects mkdir simple-go-service cd simple-go-service. ...
5. go mod init github.com/USERNAME/simple-go-service.

What is my Goroot?

GOROOT is for compiler/tools that comes from go installation. GOPATH is for your own go projects / 3rd party libraries (downloaded with "go get"). First run go env . If you see that the go isn't installed, you can install it via homebrew or via package and/or other ways.

How do you write idiomatic go?

Idiomatic Go

1. Use consistent spelling of certain words.
2. Single spaces between sentences.
3. Error variable naming.
4. For brands or words with more than 1 capital letter, lowercase all letters.
5. Comments for humans always have a single space after the slashes.
6. Use defer if its overhead is relatively negligible, or it buys meaningful readability.

What is new keyword in Golang?

The new keyword can be used to create a new struct. It returns a pointer to the newly created struct. var pa *Student // pa == nil pa = new(Student) // pa == &Student"", 0 pa.Name = "Alice" // pa == &Student"Alice", 0 You can also create and initialize a struct with a struct literal.