clac

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  "desc": "Command-line, stack-based calculator with postfix notation",
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  "enrichment_fetched_at": "2026-06-20T23:36:24+00:00",
  "first_seen": "2026-06-20T23:34:18+00:00",
  "full_name": "clac",
  "github_default_branch": "master",
  "github_last_commit_at": "2026-04-13T06:12:49Z",
  "github_readme_excerpt": "# Clac\n\nA command line, stack-based calculator with postfix notation that\ndisplays the stack contents at all times. As you type, the stack\nchanges are reflected immediately.\n\n![clac in action](http://files.soveran.com/misc/clac.gif)\n\nIn a stack-based postfix calculator, entering a number pushes it\non a stack, and arithmetic operations pop their arguments from the\nstack and push the result. As all the operations take a fix number\nof arguments, there\u0027s no room for ambiguity: parenthesis and operator\nprecedence are not needed. Postfix notation is also known as reverse\nPolish notation, or RPN.\n\nWhy?\n----\n\nI like Forth and other stack based, concatenative languages, and\nI\u0027ve used the `dc` calculator a lot. Once I got used to `dc`, other\ncalculators seemed to be less powerful. While it has been extremely\nuseful for me, I\u0027ve always found the UI a bit lacking. That\u0027s why\nI decided to try this idea of an always-visible stack with realtime\nupdates.\n\nInstallation\n------------\n\nDownload the [latest release][releases] or check the available\n[packages][packages]. You can also compile the source code in the\nmaster branch.\n\n[releases]: https://github.com/soveran/clac/releases\n[packages]: https://github.com/soveran/clac/wiki/Distribution-Packages\n\nInstall clac into `/usr/local/bin` with the following command:\n\n    $ make install\n\nYou can use `make PREFIX=/some/other/directory install` if you wish\nto use a different destination. If you want to remove clac from\nyour system, use `make uninstall`.\n\nCommands\n--------\n\nWhen a command requires an argument, it pops a value from the stack.\nIf the stack is empty, a zero is provided instead. In the descriptions\nbelow, the top of the stack (and thus the first value popped) is\nrepresented by the letter `a`, while the second value popped is\nrepresented by the letter `b`. For example, if the stack is composed\nof the number `1`, `2` and `3` (with `3` at the top of the stack),\nwhen we describe the sum then `a` will be `3` and `b` will be `2`.\nIt is ",
  "github_repo": "soveran/clac",
  "github_stars": 371,
  "github_topics": [
    "calculator",
    "command-line",
    "postfix",
    "stack-based"
  ],
  "homepage": "https://github.com/soveran/clac",
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  "last_seen": "2026-06-20T23:34:18+00:00",
  "license": "BSD-2-Clause",
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  "llm_model": null,
  "name": "clac",
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  "optional_dependencies": [],
  "rank_30d": 8483,
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  "raw_hash": "6ac2f34f5a0111d3",
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  "revision": 0,
  "ruby_source_path": "Formula/c/clac.rb",
  "tap": "homebrew/core",
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  "version_head": null,
  "version_stable": "0.3.5",
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  "why_use_this": null
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