Hi, I am wanting to replicate a python feature ```def myFunction(a,b,c): return lambda x: a * x...

# getting-started

[alex cole]

Hi, I am wanting to replicate a python feature

def myFunction(a,b,c): 
    return lambda x: a * x ** 2 + b * x + c

however I am not understanding what is wrong with

fun potentialEnergy(charge1, charge2, k){
    val x = {position: Double -> k * charge1 * charge2 / position / position} // creating lambda function
    return x
}

What is wrong with this lambda function expression.

[alex cole]

I am doing this in jupyter

[alex cole]

Example7.2

Example7.2

[Martin Nowosad]

you need to specify types for your function parameters. That code should not compile at all

[Milan Hruban]

an equivalent of the python function above would be (assuming all parameters are `Double`s:

import kotlin.math.pow

fun myFunction(a: Double, b: Double, c: Double) = { x: Double -> a * x.pow(2.0) + b * x + c }

[alex cole]

can you explain the "=" notation?

[nanodeath]

https://kotlinlang.org/docs/reference/basic-syntax.html#defining-functions expression syntax. it looks a little weird because this function is itself returning a function (well, a lambda)