Evaluate formula in Go

Question

Using Go (golang) I\'d like to take a string with a formula and evaluate it with pre-defined values. Here\'s a way to do it with python\'s parser module:

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Answer 1

With this code you can evaluate dynamically any formula and return true or false:

package main

import (
    "go/token"
    "go/types"
)

func main() {
    fs := token.NewFileSet()
    tv, err := types.Eval(fs, nil, token.NoPos, "(1 + 4) >= 5")
    if err != nil {
        panic(err)
    }
    println(tv.Value.String())
}