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smic/BadAccess.swift

Created October 20, 2016 19:34
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Mysterious Bad Access
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BadAccess.swift
import Cocoa
public func with<T>(_ item: T, update: (inout T) throws -> Void) rethrows -> T {
var this = item; try update(&this); return this
}
let path = with(CGMutablePath()) { // <--- Bad Access
$0.move(to: CGPoint(x: 0, y: 0))
$0.addLine(to: CGPoint(x: 100, y: 100))
}
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