1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 | # Mergo A helper to merge structs and maps in Golang. Useful for configuration default values, avoiding messy if-statements. Also a lovely [comune](http://en.wikipedia.org/wiki/Mergo) (municipality) in the Province of Ancona in the Italian region Marche. ![Mergo dall'alto](http://www.comune.mergo.an.it/Siti/Mergo/Immagini/Foto/mergo_dall_alto.jpg) ## Status It is ready for production use. It works fine after extensive use in the wild. [![Build Status][1]][2] [![GoDoc][3]][4] [![GoCard][5]][6] [1]: https://travis-ci.org/imdario/mergo.png [2]: https://travis-ci.org/imdario/mergo [3]: https://godoc.org/github.com/imdario/mergo?status.svg [4]: https://godoc.org/github.com/imdario/mergo [5]: https://goreportcard.com/badge/imdario/mergo [6]: https://goreportcard.com/report/github.com/imdario/mergo ### Important note Mergo is intended to assign **only** zero value fields on destination with source value. Since April 6th it works like this. Before it didn't work properly, causing some random overwrites. After some issues and PRs I found it didn't merge as I designed it. Thanks to [imdario/mergo#8](https://github.com/imdario/mergo/pull/8) overwriting functions were added and the wrong behavior was clearly detected. If you were using Mergo **before** April 6th 2015, please check your project works as intended after updating your local copy with ```go get -u github.com/imdario/mergo```. I apologize for any issue caused by its previous behavior and any future bug that Mergo could cause (I hope it won't!) in existing projects after the change (release 0.2.0). ### Mergo in the wild - [docker/docker](https://github.com/docker/docker/) - [GoogleCloudPlatform/kubernetes](https://github.com/GoogleCloudPlatform/kubernetes) - [imdario/zas](https://github.com/imdario/zas) - [soniah/dnsmadeeasy](https://github.com/soniah/dnsmadeeasy) - [EagerIO/Stout](https://github.com/EagerIO/Stout) - [lynndylanhurley/defsynth-api](https://github.com/lynndylanhurley/defsynth-api) - [russross/canvasassignments](https://github.com/russross/canvasassignments) - [rdegges/cryptly-api](https://github.com/rdegges/cryptly-api) - [casualjim/exeggutor](https://github.com/casualjim/exeggutor) - [divshot/gitling](https://github.com/divshot/gitling) - [RWJMurphy/gorl](https://github.com/RWJMurphy/gorl) - [andrerocker/deploy42](https://github.com/andrerocker/deploy42) - [elwinar/rambler](https://github.com/elwinar/rambler) - [tmaiaroto/gopartman](https://github.com/tmaiaroto/gopartman) - [jfbus/impressionist](https://github.com/jfbus/impressionist) - [Jmeyering/zealot](https://github.com/Jmeyering/zealot) - [godep-migrator/rigger-host](https://github.com/godep-migrator/rigger-host) - [Dronevery/MultiwaySwitch-Go](https://github.com/Dronevery/MultiwaySwitch-Go) - [thoas/picfit](https://github.com/thoas/picfit) - [mantasmatelis/whooplist-server](https://github.com/mantasmatelis/whooplist-server) - [jnuthong/item_search](https://github.com/jnuthong/item_search) ## Installation go get github.com/imdario/mergo // use in your .go code import ( "github.com/imdario/mergo" ) ## Usage You can only merge same-type structs with exported fields initialized as zero value of their type and same-types maps. Mergo won't merge unexported (private) fields but will do recursively any exported one. Also maps will be merged recursively except for structs inside maps (because they are not addressable using Go reflection). if err := mergo.Merge(&dst, src); err != nil { // ... } Additionally, you can map a map[string]interface{} to a struct (and otherwise, from struct to map), following the same restrictions as in Merge(). Keys are capitalized to find each corresponding exported field. if err := mergo.Map(&dst, srcMap); err != nil { // ... } Warning: if you map a struct to map, it won't do it recursively. Don't expect Mergo to map struct members of your struct as map[string]interface{}. They will be just assigned as values. More information and examples in [godoc documentation](http://godoc.org/github.com/imdario/mergo). ### Nice example ```go package main import ( "fmt" "github.com/imdario/mergo" ) type Foo struct { A string B int64 } func main() { src := Foo{ A: "one", } dest := Foo{ A: "two", B: 2, } mergo.Merge(&dest, src) fmt.Println(dest) // Will print // {two 2} } ``` Note: if test are failing due missing package, please execute: go get gopkg.in/yaml.v1 ## Contact me If I can help you, you have an idea or you are using Mergo in your projects, don't hesitate to drop me a line (or a pull request): [@im_dario](https://twitter.com/im_dario) ## About Written by [Dario Castañé](http://dario.im). ## License [BSD 3-Clause](http://opensource.org/licenses/BSD-3-Clause) license, as [Go language](http://golang.org/LICENSE). |
Commit History @debian/0.2.2-1_bpo8+1
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- copyright years correction Dmitry Smirnov 8 years ago
- Merge tag 'upstream/0.2.0' Tim Potter 8 years ago
- Imported Upstream version 0.2.0 Tim Potter 8 years ago
- Update to latest upstream version Tim Potter 8 years ago
- Add d/docs file Tim Potter 8 years ago
- Add d/watch file Tim Potter 8 years ago
- Initial packaging Tim Potter 8 years ago
- Imported Upstream version 0.1.2+git20150606.5.61a5285 Tim Potter 8 years ago
- Ignore quilt dir .pc via .gitignore Tim Potter 8 years ago
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