Comments (2)
found this
import QuartzCore
func executionTimeInterval(block: () -> ()) -> CFTimeInterval {
let start = CACurrentMediaTime()
block();
let end = CACurrentMediaTime()
return end - start
}
// DEMO (paste all this into a playground)
// Non-memoized Fibonacci generator
func fib(n: Int) -> Int {
assert(n >= 0)
switch n {
case 0, 1: return 1
default: return fib(n-1) + fib(n-2)
}
}
let fib8 = executionTimeInterval {
let x = fib(8)
print("fib(8) = \(x)")
}
let fib10 = executionTimeInterval {
let x = fib(10)
print("fib(10) = \(x)")
}
let fib12 = executionTimeInterval {
let x = fib(12)
print("fib(12) = \(x)")
}
https://gist.github.com/johndpope/d22970b54f6c6cde4d37cc3376f61a18
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let start = DispatchTime.now()
// your code here
let end = DispatchTime.now()
let time = Double(end.uptimeNanoseconds - start.uptimeNanoseconds)/Double(1_000_000_000)
print(time)
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