Function ea::chain

pub fn chain<R>(result: R) -> Chainable<R>

A function that take an expression which return a single value or object then return a Chainable then it can be chain with other function/closure with method chain of Chainable.

Example

use ea::chain;
 
fn function1(a : i32, b : i32, c : i32) -> i32 {
    a + b + c
}
 
fn function2(d : i32) -> i32 {
    d + 1
}
 
let var = 2;
let chained = chain(function1(1, 2, 3))
                    .chain(function2)
                    .chain(|param| param + 2)
                        .chain(move |param| param * var);
assert_eq!(18, *chained);
// Chainable struct implement Deref to obtain final result.
// There's also `end` method that consume Chainable and return result.
assert_eq!(18, chained.end());
// chained no longer exist as it was consumed by end()