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
- API
  
  Reference documentation for the pkg.go.dev API
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

fmtstr

package module

Go to main page

Versions in this module

v1

v1.2.2

Aug 9, 2026

v1.2.1

Jun 19, 2024

v1.2.0

Jan 29, 2024

v1.1.1

Jan 7, 2024

v1.1.0

Jan 7, 2024

Changes in this version

type Variables

+ func Decompose(format string, argv ...string) (replaced, labelled string, variables Variables, err error)

v1.0.0

Jan 5, 2024

Changes in this version

+ var ErrPosArgNotImpl = errors.New("positional argument support for width and precision is not implemented yet")

+ func TrimVarPrefix(tmplVar string) (trimmed string)

+ type Modifier uint8

+ const ModDecimal

+ const ModHash

+ const ModMinus

+ const ModPlus

+ const ModSpace

+ const ModZeroPad

+ const NoModifiers

+ type Variable struct

+ Label string

+ Modifiers Modifier

+ Pos int

+ Precision int

+ Source string

+ Type string

+ Value string

+ Verb Verb

+ Width int

+ func (v *Variable) Has(m Modifier) (present bool)

+ func (v *Variable) String() (value string)

+ type Variables []*Variable

+ func Parse(format string, argv ...string) (replaced, labelled string, variables Variables, err error)

+ func (v Variables) Count() (argc int)

+ func (v Variables) Sort() (sorted Variables)

+ func (v Variables) String() (values string)

+ type Verb string

+ func (v Verb) Equal(o Verb) (equal bool)

+ func (v Verb) Label() string

+ func (v Verb) String() string

+ func (v Verb) Type() string