import Benchmark

Benchmark.measure() {
    print(self) // don't have to set weak.
    for _ in 0...10000000 { }
}
// Benchmark: 0.1690970063 sec.

// Benchamrk can be set name.
Benchmark.measure("Measure1") {
    for _ in 0...10000000 { }
}
// Measure1: 0.1690970063 sec.

import Benchmark

func heavyMethod() {
    let outer = Benchmark(key: "outer")

    let inner = Benchmark(key: "inner")

    // some light processes
    for _ in 0...10 { }

    inner.finish()  // inner: 0.0002210140 sec.

    // some heavy processes
    for _ in 0...10000000 { }

    outer.finish()  // outer: 0.1663100123 sec.
}

import Benchmark

class Foo {
    func execute() {
        Benchmark.start()
    }
}

class Bar {
    func execute() {
        Benchmark.finish()
    }
}

Foo().execute()

Bar().execute()  // Benchmark: 0.0001509786 sec.

import Benchmark

// same as Benchmark.measure {}
⏲{
    for _ in 0...10000000 { }
}
// Benchmark: 0.1653281017 sec.