sreerag-rajan / learning-go

Code written while learning go

learning-go

Code written while learning go

Basic Commands

- go mod init {{file name}}
- go env

Helpful tips

- new() vs make()
    - new() allocates memory but does not initialize whereas make() allocates memory and intializes
    - new creates zeroed storage( cannot put data) whereas make() gives non zeroed stoage.

Useful inbuilt Packages

• bufio package is for taking input (refer 03 and 04)
• strconv packages helps with converting string
• strings package helps working with strings
• time package
• sync package
• Mutex

Things to remember

- file with the main function needs to start have `package main` at top
- public variables start in capital letters, private ones start in lower
- nil is the syntax for null value
- formatting time : ```go 01-02-2006 15:04:05 Monday```
- Pointer is a direct reference to memory location. using this ensures original value is being transferred and not a copy
- array is not a commonly used data type in this. Slice is what is dominantly used
- ranges in slice, the last range are non-inclusive
- You need to encode and decode jsons for APIs. If you are creating a JSON you need to encode, if you are recieving a json you need to decode it. Use the json(inbuilt) library
- Forgot what context is. Need to look into that again

semvar.org(semvar.org)

Libraries:

- Routing : Gorilla Mux `go get -u github.com/gorilla/mux`
- MongoDB Driver: `go get go.mongodb.org/mongo-driver/mongo`