https://github.com/dvvcz/luastl
A small standard library for luajit
https://github.com/dvvcz/luastl
computer-algebra lua luajit math solver standard-library symbolic-math vector
Last synced: 4 months ago
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A small standard library for luajit
- Host: GitHub
- URL: https://github.com/dvvcz/luastl
- Owner: DvvCz
- License: mit
- Created: 2023-02-01T19:55:31.000Z (over 2 years ago)
- Default Branch: master
- Last Pushed: 2023-02-28T01:17:50.000Z (over 2 years ago)
- Last Synced: 2025-01-05T17:13:26.965Z (9 months ago)
- Topics: computer-algebra, lua, luajit, math, solver, standard-library, symbolic-math, vector
- Language: Lua
- Homepage:
- Size: 14.6 KB
- Stars: 2
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# LuaSTL
Standard library for lua, mostly for using lua as a command line tool.
Inspired by the [Rust](https://www.rust-lang.org/) standard library, alongside projects like [Sympy](https://github.com/sympy/sympy)
## Usage
Clone this repository into the same folder where you installed your lua(jit) binary.
Then `require "std"`
### Http
This has a small helper to easily make synchronous http requests (uses PowerShell/cURL internally)
```lua
local std = require "std"
print( std.net.http.get("https://google.com") )
```
### Math
This has a small symbolic math library (just because)
```lua
local std = require "std"
local sin = std.math.symbolic.trig.sin
local x, y = Symbol "x", Symbol "y"
local equation = sin(x * 5) + x * 2 + y
print( equation:eval { x = 5, y = 2 } ) -- 12
-- Symbolic differentation
print( equation:d(x, {}) ) -- cos(x * 5) * 1 * 5 + x * 0 + 1 * 2 + x * 0 + 0 (simplifies to 5cos(5x) + 2)
```
And vector math
```lua
local std = require "std" -- Vector (alongside aliases in case of casing/typo errors are exposed with the stl)
print( Vector(1, 2, 3) + Vector(-1, -2, -3) ) -- Vector(0.0, 0.0, 0.0)
```
### Tests
```lua
local T = std.test.Test.new("unit test")
function T.__start(state)
state.x = 10
end
function T.__stop(state)
assert(state.x == 5)
end
function T.test_foo(state)
print("Testing the foo")
state.x = state.x / 2
end
function T.test_bar(state)
error("the bar")
end
T:run()
```