Golang delve

delve is a go debugger.
It is more knowledgeable about the go runtime than golang gdb .
There are also editor integrations.

Documentation

github	https://github.com/go-delve/delve
command docs	https://github.com/go-delve/delve/blob/master/Documentation/cli/README.md
editor plugins	https://github.com/go-delve/delve/blob/master/Documentation/EditorIntegration.md

Install

go install github.com/go-delve/delve/cmd/dlv@latest

Usage

Delve builds your executable automatically with flags required for it to debug your program.

# start debugger
dlv debug [example.com/x/foo/package] [-- [--your-params]]  # run program
dlv test  [example.com/x/foo/package]                       # run tests

Add your breakpoints, then continue to execute your program

b main.main   # add breakpoint to 'main.go's 'main' method
b main.go:10  # add breakpoint to 'main.go's line 10

c             # continue (start executing)

Inspect your program, learn

p yourVar  # print var
l          # print location
n          # next line (enters loop, not skip to end)
s          # step into line
<enter>    # repeat last command