commit | 5420a8b6744d3b0345ab293f6fcba19c978f1183 | [log] [tgz] |
---|---|---|
author | Prashant Varanasi <github@prashantv.com> | Wed Mar 28 12:50:20 2018 -0700 |
committer | Gustavo Niemeyer <gustavo@niemeyer.net> | Wed Mar 28 16:50:20 2018 -0300 |
tree | fa9fae6dac9903e66b45ce9b0decc21313bedc50 | |
parent | 4fc5987536ef307a24ca299aee7ae301cde3d221 [diff] |
Use underlying float precision when formatting floats (#353) Currently, all float values are formatted using 64-bit, but that incorrectly formats float32 values like 0.01 and 0.99. See https://play.golang.org/p/jbseI1ivyMW for more context. Fixes #352.
The yaml package enables Go programs to comfortably encode and decode YAML values. It was developed within Canonical as part of the juju project, and is based on a pure Go port of the well-known libyaml C library to parse and generate YAML data quickly and reliably.
The yaml package supports most of YAML 1.1 and 1.2, including support for anchors, tags, map merging, etc. Multi-document unmarshalling is not yet implemented, and base-60 floats from YAML 1.1 are purposefully not supported since they're a poor design and are gone in YAML 1.2.
The import path for the package is gopkg.in/yaml.v2.
To install it, run:
go get gopkg.in/yaml.v2
If opened in a browser, the import path itself leads to the API documentation:
The package API for yaml v2 will remain stable as described in gopkg.in.
The yaml package is licensed under the Apache License 2.0. Please see the LICENSE file for details.
package main import ( "fmt" "log" "gopkg.in/yaml.v2" ) var data = ` a: Easy! b: c: 2 d: [3, 4] ` // Note: struct fields must be public in order for unmarshal to // correctly populate the data. type T struct { A string B struct { RenamedC int `yaml:"c"` D []int `yaml:",flow"` } } func main() { t := T{} err := yaml.Unmarshal([]byte(data), &t) if err != nil { log.Fatalf("error: %v", err) } fmt.Printf("--- t:\n%v\n\n", t) d, err := yaml.Marshal(&t) if err != nil { log.Fatalf("error: %v", err) } fmt.Printf("--- t dump:\n%s\n\n", string(d)) m := make(map[interface{}]interface{}) err = yaml.Unmarshal([]byte(data), &m) if err != nil { log.Fatalf("error: %v", err) } fmt.Printf("--- m:\n%v\n\n", m) d, err = yaml.Marshal(&m) if err != nil { log.Fatalf("error: %v", err) } fmt.Printf("--- m dump:\n%s\n\n", string(d)) }
This example will generate the following output:
--- t: {Easy! {2 [3 4]}} --- t dump: a: Easy! b: c: 2 d: [3, 4] --- m: map[a:Easy! b:map[c:2 d:[3 4]]] --- m dump: a: Easy! b: c: 2 d: - 3 - 4