Scalar and utility types

Float

Float is the type of coordinates, distances, and other solver expressions. A float literal has a decimal point, an exponent, or both: 12., -0.5, 1e-12, or 2.5e3.

Used by the geometry constructors, constraints, and instance positions.

warning

12 is an Int. Write 12. for a float.

Int

Int is for counts, indices, point counts, and rotation angles. Schematic placement and routes are Int grid units, not Float.

Cast to a float with value as Float.

Bool

Bool is true or false. Conditions must be booleans, and inst uses them for flags such as reflect and construction.

String

String is text. Layer names and labels are strings.

std::layout::rect("met1");
std::layout::text("VDD", "text.label", 0., 0.);

Any

Any erases a value's static type. It's occasionally useful for mixed or generic sequences, but concrete types give you field access and better error messages.

Unit ()

() is the return type of functions that produce nothing useful, such as ones that only emit geometry or constraints.

fn align_left(a: Rect, b: Rect) -> () {
    eq(a.x0, b.x0);
}