{"id":17360942,"url":"https://github.com/arjenmarkus/old-programming-idioms","last_synced_at":"2026-01-07T07:11:21.062Z","repository":{"id":171197045,"uuid":"647570243","full_name":"arjenmarkus/old-programming-idioms","owner":"arjenmarkus","description":"Explain old-style programming idioms used in FORTRAN 77 programs","archived":false,"fork":false,"pushed_at":"2025-01-19T16:09:17.000Z","size":3353,"stargazers_count":23,"open_issues_count":0,"forks_count":3,"subscribers_count":6,"default_branch":"main","last_synced_at":"2025-02-01T20:14:11.604Z","etag":null,"topics":["fortran","fortran-tutorial","fortran77"],"latest_commit_sha":null,"homepage":"","language":"TeX","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/arjenmarkus.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}},"created_at":"2023-05-31T04:12:54.000Z","updated_at":"2025-01-19T16:09:19.000Z","dependencies_parsed_at":null,"dependency_job_id":"5c6d937a-05f6-47bf-bd60-de24630572fc","html_url":"https://github.com/arjenmarkus/old-programming-idioms","commit_stats":{"total_commits":24,"total_committers":3,"mean_commits":8.0,"dds":"0.16666666666666663","last_synced_commit":"c93657febad72f4d29d8b2abb84f1eba796322ea"},"previous_names":["arjenmarkus/old-programming-idioms"],"tags_count":0,"template":false,"template_full_name":null,"repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/arjenmarkus%2Fold-programming-idioms","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/arjenmarkus%2Fold-programming-idioms/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/arjenmarkus%2Fold-programming-idioms/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/arjenmarkus%2Fold-programming-idioms/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/arjenmarkus","download_url":"https://codeload.github.com/arjenmarkus/old-programming-idioms/tar.gz/refs/heads/main","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":245881952,"owners_count":20687805,"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":["fortran","fortran-tutorial","fortran77"],"created_at":"2024-10-15T19:29:09.868Z","updated_at":"2026-01-07T07:11:21.001Z","avatar_url":"https://github.com/arjenmarkus.png","language":"TeX","funding_links":[],"categories":[],"sub_categories":[],"readme":"I want to write about the typical idioms you find in old-style FORTRAN\nprograms:\n- What do they mean?\n- What are modern equivalents?\n\nThis will typically be the common things from FORTRAN 77 onwards, but\nperhaps also a wee bit about FORTRAN 66 (like one-pass loops?)\n\nThese are the keyword/subjects I am thinking about:\n\n- array(*) versus array(:)\n- array(10) as the starting point\n- COMMON blocks and BLOCK DATA, named and blank COMMON\n- history of computers:\n   - hardware\n   - memory management\n   - tools like source code control systems\n   - connections between computers, Internet\n- equivalence\n- constants as actual arguments\n- intent\n- temporary arrays - non-contiguous arrays\n- implicit types\n- double precision versus kind\n- checking interfaces\n- separate compilations, the misunderstanding of one routine per file\n- fixed form and spaces\n- standard input and output\n- LU-numbers 5 and 6 (and 7)\n- command-line arguments for file names\n- real do-variables\n- entry\n- SAVE-attribute and SAVE as compiler property\n- ASSIGN\n- arithmetic IF\n- computed GOTO\n- F66: one-pass do-loops\n- statement functions\n- six characters\n- numerical binary representations versus IEEE (IBM, Cray, Convex)\n- big-endian and little-endian\n- double complex\n- unformatted versus binary files\n- list-directed input and output - also: /\n- narrow formats\n- input formats with decimals - F5.1 and there is no decimal point in\n  the input\n- double precision :: x = 1.01 not the same as double precision :: x = 1.01d0\n- use of d00 in input\n- format statements\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Farjenmarkus%2Fold-programming-idioms","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Farjenmarkus%2Fold-programming-idioms","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Farjenmarkus%2Fold-programming-idioms/lists"}