mattt

0  swift                    0x00000001109fac5a PrintStackTraceSignalHandler(void*) + 42
1  swift                    0x00000001109fa066 SignalHandler(int) + 966
2  libsystem_platform.dylib 0x00007fff65e29d9a _sigtramp + 26
3  libsystem_malloc.dylib   0x00007fff65e09ed4 tiny_malloc_should_clear + 289
4  CoreNLP                  0x00007fff4d7948eb invocation function for block in CoreNLP::NLModelTrainer::readSample(__CFString const*, std::__1::vector<CFRange, std::__1::allocator<CFRange> > const&, std::__1::vector<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::allocator<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > > > const&, CoreNLP::NLTrainerDataType) + 1010
5  CoreNLP                  0x00007fff4d751fd7 CoreNLP::CompositeTagger::enumerateTokens(NLTokenizerUnit, CFRange, unsigned long, void (NLToken, bool*) block_pointer) + 567
6  CoreNLP                  0x00007fff4d7944c0 CoreNLP::NLModelTrainer::readSample(__CFString 

mattt

func unzip<S: Sequence, T, U>(_ sequence: S) -> (AnySequence<T>, AnySequence<U>)
    where S.Element == (T, U)
{
    return (
        AnySequence(sequence.lazy.map{ $0.0 }),
        AnySequence(sequence.lazy.map{ $0.1 })
    )
}

let fibonacci = sequence(first: (0, 1), next: { ($1, $0 + $1) })

mattt

import Foundation

extension UnitConcentrationMass {
    class var microgramsPerCubicMeter: UnitConcentrationMass {
        let converter = UnitConverterLinear(coefficient: 1e-9)
        return .init(symbol: "µg/m³", converter: converter)
    }
}

mattt

protocol Calendar {
    typealias Unit: BidirectionalIndexType

    typealias Era: Unit
    typealias Year: Unit
    typealias Month: Unit
    typealias Week: Unit
    typealias Day: Unit
    typealias Weekday: Unit
    typealias Hour: Unit

mattt

Pitch: Unicode Named Character Escape Sequence

Introduction

This proposal adds a new \N{name} escape sequence to Swift string literals, where name is the name of a Unicode character.

Discussion

The Unicode named character escape sequence was previously discussed here:

mattt

// Calculate prime numbers in a given range
// using Sieve of Eratosthenes

import Accelerate

var primes: [Int] = []

let range = 0...999
var numbers = range.map(Float.init)

mattt

A number of tech news outlets, including WIRED, GigaOm, and MIT Technology Review, have recently started writing about Multipeer Connectivity ("one weird trick that the NSA hates"). Since the NSHipster article on the subject has been linked to in a lot of this coverage, I wanted to share some additional thoughts on the matter:

Multipeer Connectivity(http://nshipster.com/multipeer-connectivity/) represents a significant shift in the opposite direction of how we conventionally think about mobile applications. Nearly every app on your phone operates in a client-server model, with the device making requests to remote cloud services to send and receive messages, photos, and videos. The [

mattt

public struct BoundedSequence<Base>: Sequence, IteratorProtocol where Base: Sequence {
    public struct Boundary: Equatable {
        public let isStart: Bool
        public let isEnd: Bool
    }
    
    private var _iterator: Base.Iterator
    private var _previous: Base.Element?
    private var _current: Base.Element?
    private var _next: Base.Element?

mattt

import Darwin

extension Int {
    static func random() -> Int {
        return Int(arc4random())
    }

    static func random(range: Range<Int>) -> Int {
        return Int(arc4random_uniform(UInt32(range.endIndex - range.startIndex))) + range.startIndex
    }

mattt

"https://developer.apple.com/documentation/accelerate/vimagecvimageformat/chromasiting/3241430"
"https://developer.apple.com/documentation/accelerate/vdsp/dcttransformtype/3240713"
"https://developer.apple.com/documentation/accelerate/vdsp/dfttransformtype/3240728"
"https://developer.apple.com/documentation/accelerate/vimage/error/3241360"
"https://developer.apple.com/documentation/accelerate/quadrature/error/3240672"
"https://developer.apple.com/documentation/accelerate/vimagecvimageformat/format/3241442"
"https://developer.apple.com/documentation/accelerate/vdsp/fouriertransformdirection/3240744"
"https://developer.apple.com/documentation/accelerate/vdsp/integrationrule/3240753"
"https://developer.apple.com/documentation/accelerate/vimage/options/3241388"
"https://developer.apple.com/documentation/accelerate/vdsp/radix/3240761"