Cordial Quickstart

Eval line

/= 2 + 2
    → 4

Variables and functions in scope

let m = 100
let v = 9.8

/= 0.5 * m * v^2
    → 4802

Types

let count: int = 42
let bad: int = 3.7         // ERROR — lossy round-trip

Value types: int, float, bool, str. Anything else is a unit label — see SPICE.

Functions

Math-style, single expression:

let area(w, h) = w * h
let hypot(a, b) = sqrt(a^2 + b^2)

/= area(4, 5)               // → 20
/= hypot(3, 4)              // → 5

Block-bodied:

fn classify(x) {
    if x > 0 {
        return "positive"
    } else if x < 0 {
        return "negative"
    }
    return "zero"
}

/= classify(-7)             // → "negative"

With types:

fn area_typed(w: float, h: float) -> float {
    return w * h
}

Control flow

let i = 0
let total = 0
while i < 10 {
    total = total + i
    i = i + 1
}

for x in [10, 20, 30] {
    total = total + x
}

for n in 1..5 {
    total = total + n
}

Implicit multiplication

2pi                         // 2 * pi
3x                          // 3 * x
4(a + b)                    // 4 * (a + b)

Tables

| Item    | Cost  | Tax (8%)     |
| ------- | ----- | ------------ |
| Coffee  | 4     | /= B2 * 0.08 |
| Bagel   | 3     | /= B3 * 0.08 |

/= sum(@Items:B2:B10)

Cordial Quickstart

Eval line

Variables and functions in scope

Types

Functions

Control flow

Implicit multiplication

Tables

See also