Macro symbolics_core::apply

macro_rules! apply {
    ($expr:expr, $($sym:ident = $sub:expr),+) => { ... };
}

Apply any number of substitutions to an expression. These can be numbers or expressions.

Examples

#[macro_use]
extern crate symbolics_core;
fn main() {
    let expr = s!(x) * s!(x).sqrt();
    assert_eq!(apply!(expr, x=4.).val().unwrap(), 8.);
}

#[macro_use]
extern crate symbolics_core;
use std::f64::consts::E;
fn main() {
    let expr = s!(x) + s!(x).sqrt();
    let expr_t = apply!(expr, x = s!(t).ln());
    assert_eq!(apply!(expr_t, t = E).val().unwrap(), 2.);
}