{"id":18960286,"url":"https://github.com/gemcook/merr","last_synced_at":"2025-04-19T09:53:45.956Z","repository":{"id":38358708,"uuid":"362294021","full_name":"gemcook/merr","owner":"gemcook","description":"merr is a package that binds multiple errors.","archived":false,"fork":false,"pushed_at":"2024-11-24T15:31:39.000Z","size":114,"stargazers_count":12,"open_issues_count":7,"forks_count":3,"subscribers_count":0,"default_branch":"main","last_synced_at":"2025-03-29T07:05:15.625Z","etag":null,"topics":["error","go","golang"],"latest_commit_sha":null,"homepage":"","language":"Go","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"mit","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/gemcook.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":"LICENSE","code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null}},"created_at":"2021-04-28T00:51:05.000Z","updated_at":"2025-01-27T09:34:04.000Z","dependencies_parsed_at":"2024-06-19T03:08:58.215Z","dependency_job_id":null,"html_url":"https://github.com/gemcook/merr","commit_stats":null,"previous_names":[],"tags_count":3,"template":false,"template_full_name":null,"repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/gemcook%2Fmerr","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/gemcook%2Fmerr/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/gemcook%2Fmerr/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/gemcook%2Fmerr/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/gemcook","download_url":"https://codeload.github.com/gemcook/merr/tar.gz/refs/heads/main","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":249195325,"owners_count":21228173,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2022-07-04T15:15:14.044Z","host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["error","go","golang"],"created_at":"2024-11-08T14:05:09.755Z","updated_at":"2025-04-19T09:53:45.930Z","avatar_url":"https://github.com/gemcook.png","language":"Go","funding_links":[],"categories":[],"sub_categories":[],"readme":"# merr\n\n[![Analysis](https://github.com/gemcook/merr/actions/workflows/analysis.yml/badge.svg)](https://github.com/gemcook/merr/actions/workflows/analysis.yml) ![GitHub go.mod Go version](https://img.shields.io/github/go-mod/go-version/gemcook/merr)\n\n`merr` is a package that binds multiple errors.\n\n## Features\n\n`merr` has pretty print, which outputs the bound errors in a well-formatted and easy-to-understand format.\nIt is also possible to change the output destination if necessary, which is very useful for debugging.\n\n## Installation\n\n```sh\ngo get -u github.com/gemcook/merr\n```\n\n## Usage\n\n```go\nimport \"github.com/gemcook/merr\"\n```\n\n### Determine if it's an error\n\n```go\nmultiError := merr.New()\n\n// do something...\n\n// error handling example\nif multiError.ErrorOrNil() != nil {\n    return multiError\n}\nreturn nil\n```\n\n### Appends error\n\nAppends error to list of errors.\nIf there is no error list, it creates a new one.\n\n```go\nmultiError := merr.New()\n\nfor i := 0; i \u003c 10; i++ {\n    if err := something(); err != nil {\n        multiError.Append(err)\n    }\n}\n```\n\n### Print list of error\n\nPrints the object of the list of errors, separated by `,\\n`.\n\n```go\nmultiError := merr.New()\n\nfor i := 0; i \u003c 10; i++ {\n    // something() returns \u0026errors.errorString{s: \"something error\"}\n    if err := something(); err != nil {\n        multiError.Append(err)\n    }\n}\n\nfmt.Println(multiError.Error())\n```\n\n```text\n\"something error\",\n\"something error\",\n  .\n  .\n  .\n\"something error\"\n```\n\n### Pretty print\n\nPrints a list of errors in a well-formatted, easy-to-understand format.\n\n```go\nmultiError := merr.New()\n\nfor i := 0; i \u003c 10; i++ {\n    // something() returns \u0026errors.errorString{s: \"something error\"}\n    if err := something(); err != nil {\n        multiError.Append(err)\n    }\n}\n\nmultiError.PrettyPrint()\n```\n\n```text\nErrors[\n  \u0026errors.errorString{\n    s: \"something error\",\n  },\n  \u0026errors.errorString{\n    s: \"something error\",\n  },\n  \u0026errors.errorString{\n    s: \"something error\",\n  },\n  .\n  .\n  .\n  \u0026errors.errorString{\n    s: \"something error\",\n  },\n]\n```\n\nThe default output destination is the **standard output**.\nYou can also change the output destination.\n\n```go\nbuf := bytes.NewBuffer(nil)\nmerr.SetOutput(buf)\n```\n\n## License\n\nMIT License\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fgemcook%2Fmerr","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fgemcook%2Fmerr","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fgemcook%2Fmerr/lists"}