Package usage

init() function

Other points to note about the package

time package

file operation

io read operation

io write operation

Copy files

http

bufio package

ioutil package

Traverse folders

Introduction to concurrent programming

Concurrency

First introduction to Goroutine

Goroutine concurrency model

runtime package

Critical resource security issues

sync包 WaitGroup

mutex lock

read-write lock

First introduction to channel channel

Turn off channel and on-channel range loops

buffer channel

directional channel

Channel related functions in the time package

select statement

CSP concurrency model

reflection first acquaintance

reflect object obtains interface variable information

reflect object sets the value of the actual variable

reflect object to call methods

Conclusion