math`1+sqrt(2)`
A = math`[5, 4, 3, 2, 1]`
math` ${A}*${A} `
math`
A = [1,2,3]
B = [4,5,6]
A*B'
`
math`
x = 3 + 4i
y = -1 + 0.5i
`
{
const vector = [6,5,4]
return math`${vector} + [1,1,1]`
}
function math(strings, ...values) {
let parser = mathjs.parser()
let text = ""
// text = strings[0] + "_value0" + strings[1] + "_value1" + ...
for (let [i,x] of values.entries()) {
parser.set("_value" + i, x)
text += strings[i] + "_value" + i
}
text += strings[strings.length - 1]
const ans = parser.evaluate(text)
let variables = parser.getAll()
let originalNames = Object.keys(variables).filter(x => x.indexOf("_value") !== 0)
//return {ans, variables, originalNames}
if (originalNames.length == 0) {
return ans // no variables used
} else {
const lastName = originalNames[originalNames.length - 1]
const lastAnswer = ans.entries[ans.entries.length - 1]
if (variables[lastName] !== lastAnswer) {
return lastAnswer
} else {
return originalNames.reduce((r,x) => { r[x] = variables[x]; return r }, {}) // return all variables
}
}
}
mathjs = require("mathjs@14.0.1")
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