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extension String { | |
init<T>(dumping x: T) { | |
self.init() | |
dump(x, to: &self) | |
} | |
} | |
func assertDumpsEqual<T>(_ lhs: @autoclosure () -> T, _ rhs: @autoclosure () -> T, file: StaticString = #file, line: UInt = #line) { | |
assert(String(dumping: lhs()) == String(dumping: rhs()), "Expected dumps to be equal.", file: file, line: line) | |
} |
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import Foundation | |
extension Notification { | |
struct TypedName<Value> { | |
let rawValue: String | |
init(_ rawValue: String) { | |
self.rawValue = rawValue | |
} | |
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struct AnyEncodable: Encodable { | |
let base: Encodable | |
init(_ value: Encodable) { | |
base = value | |
} | |
func encode(to encoder: Encoder) throws { | |
try base.encode(to: encoder) | |
} |
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// Monoid | |
precedencegroup MonoidPrecedence { | |
associativity: left | |
} | |
infix operator <> : MonoidPrecedence | |
protocol Monoid { | |
static var empty: Self { get } |
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let totalSize = 300 | |
func powerLevel(x: Int, y: Int, serialNumber: Int) -> Int { | |
let rackID = x + 10 | |
return ((rackID * y + serialNumber) * rackID / 100) % 10 - 5 | |
} | |
func part2(serialNumber: Int) -> String { | |
let grid = (1...totalSize).map { y in | |
(1...totalSize).map { x in |
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extension ClosedRange where Bound == Int { | |
init(_ string: Substring) { | |
if let range = string.range(of: "..") { | |
let x = Int(string.prefix(through: range.lowerBound).dropLast())! | |
let y = Int(string.suffix(from: range.upperBound))! | |
self = x...y | |
} else { | |
let x = Int(string)! | |
self = x...x |
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struct NonEmptyMaxHeap<Element: Comparable> { | |
private(set) var elements: [Element] | |
init(root: Element) { | |
self.elements = [root] | |
} | |
} | |
extension NonEmptyMaxHeap { | |
mutating func insert(_ element: Element) { |
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use std::mem::ManuallyDrop; | |
use std::ops::{Deref, DerefMut}; | |
use std::ptr; | |
struct NonEmptyBinaryHeap<T> { | |
data: Vec<T>, | |
} | |
impl<T: Ord> NonEmptyBinaryHeap<T> { | |
fn with_root_and_capacity(root: T, capacity: usize) -> Self { |
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import Foundation | |
func measure<T>(_ block: () -> T) -> T { | |
let start = Date() | |
let result = block() | |
print("elapsed time: \(-start.timeIntervalSinceNow)") | |
return result | |
} | |
extension Sequence { |
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struct RotatedCollection<Base: Collection> { | |
let base: Base | |
let index: Base.Index | |
init(base: Base, shiftingToStart index: Base.Index) { | |
self.base = base | |
self.index = index | |
} | |
} |
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