{"id":46976253,"title":"Show HN: Funxy – A typed scripting language that embeds into Go apps","points":2,"user":"funbitty","time":1770824154,"time_ago":"5 hours ago","type":"link","content":"

Hi HN, I built Funxy because I needed a scripting layer for Go services — \nsomething between hardcoding business logic in Go and shipping a full dynamic \nlanguage with no safety guarantees.

What it does:\n- Embed in Go with 3 lines: New(), Bind(), Call(), Eval()\n- Bind Go structs and functions directly — scripts see fields and call methods\n- Type inference catches errors before runtime, but you rarely write annotations\n- Option/Result instead of nil — no surprise panics in production\n- Stdlib covers HTTP, WebSocket, gRPC, SQLite, JSON, CSV, async tasks out of the box

Use cases I built it for:\n- Business rules that change without redeploying the Go host\n- Data pipelines and ETL scripts\n- Configuration that's more than YAML but less than a full app

Example embedding:

Use case: discount rules your ops team can change without redeploy

Go side:

    type Discounts struct {\n        VIPPercent     float64\n        HolidayPercent float64\n        MinOrder       float64\n    }\n    func (d *Discounts) SetVIP(pct float64)     { d.VIPPercent = pct }\n    func (d *Discounts) SetHoliday(pct float64)  { d.HolidayPercent = pct }\n    func (d *Discounts) SetMinOrder(min float64)  { d.MinOrder = min }\n\n    discounts := &Discounts{VIPPercent: 0.05, HolidayPercent: 0.0, MinOrder: 100}\n    vm := funxy.New()\n    vm.Bind("discounts", discounts)\n    vm.LoadFile("rules.lang")\n    vm.Call("updateRules")\n    // discounts.VIPPercent is now 0.15\n    // discounts.HolidayPercent is now 0.10\n    // discounts.MinOrder is now 50 — no redeploy needed\n

\nrules.lang (ops team edits this):

    fun updateRules() {\n        // Black Friday campaign\n        discounts.SetVIP(0.15)\n        discounts.SetHoliday(0.10)\n        discounts.SetMinOrder(50.0)\n    }\n

\nRepo: https://github.com/funvibe/funxy","url":"https://github.com/funvibe/funxy","domain":"github.com","comments":[{"id":46976398,"level":0,"user":"catlover76","time":1770824764,"time_ago":"5 hours ago","content":"

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