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41 lines
1.8 KiB
Markdown
Executable File
41 lines
1.8 KiB
Markdown
Executable File
# mers 
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Mers is an experimental programming language inspired by high-level and scripting languages, but with error handling inspired by rust.
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## Why mers?
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mers has...
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- the type-safety of statically typed languages
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+ mers will not crash unless you `exit()` with a nonzero exit code or write flawed assumptions using the builtin `.assume*()` functions (Rust's `unwrap` or `expect`)
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- the flexibility of dynamically typed languages
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+ `x := if condition() { "my string" } else { 12 } // <- this is valid`
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- "correctness" (this is subjective and I'll be happy to discuss some of these decisions with people)
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+ there is no `null` / `nil`
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+ all references are explicit: if you pass a list by value, the original list will *never* be modified in any way.
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+ errors are normal values! (no special treatment)
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- a flexible type system to easily represent these errors and any complex structure including recursive types:
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+ nothing: `[]` (an empty tuple)
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+ a string: `string`
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+ two strings: `[string string]` (a tuple)
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+ many strings: `[string ...]` (a list)
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+ Either a string or nothing (Rust's `Option<String>`): `string/[]`
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+ Either an int or an error: (Rust's `Result<isize, String>`): `int/string` (better: `int/Err(string)`)
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- compile-time execution through (explicit) macro syntax: `!(mers {<code>})` or `!(mers "file")`
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## How mers?
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Mers is written in rust. If you have `cargo`, use the build script in `build_scripts/` to produce the executable.
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Now, create a new text file (or choose one from the examples) and run it: `mers <file>`.
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## Docs
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[intro](docs/intro.md)
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[syntax cheat sheet](docs/syntax_cheat_sheet.md)
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[builtins](docs/builtins.md)
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[statements](docs/statements.md)
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