Why Go
- Case Studies
  
  Common problems companies solve with Go
- Use Cases
  
  Stories about how and why companies use Go
- Security
  
  How Go can help keep you secure by default
Learn
Docs
- Effective Go
  
  Tips for writing clear, performant, and idiomatic Go code
- Go User Manual
  
  A complete introduction to building software with Go
- Standard library
  
  Reference documentation for Go's standard library
- Release Notes
  
  Learn what's new in each Go release
Packages
Community
- Recorded Talks
  
  Videos from prior events
- Meetups
  
  Meet other local Go developers
- Conferences
  
  Learn and network with Go developers from around the world
- Go blog
  
  The Go project's official blog.
- Go project
  
  Get help and stay informed from Go
- Get connected

log

package

Go to main page

Versions in this module

v1

v1.2.0

Jul 13, 2025

v1.1.0

Jun 6, 2025

Changes in this version

+ var Discard = New(WithLevel(LevelSilent), WithWriter(io.Discard))

+ type Level int8

+ const LevelError

+ const LevelInfo

+ const LevelSilent

+ const LevelVerbose

+ func (l *Level) UnmarshalText(text []byte) error

+ func (l Level) MarshalText() ([]byte, error)

+ func (l Level) String() string

+ type Logger struct

+ func New(ops ...Option) *Logger

+ func (l *Logger) Error(msg string, fields ...any)

+ func (l *Logger) Info(msg string, fields ...any)

+ type Option func(*Logger)

+ func WithLevel(level Level) Option

+ func WithWriter(w io.Writer) Option

v1.0.0

May 31, 2025

v0

v0.1.0

Dec 16, 2024