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@rkawajiri
rkawajiri / ProvisioningProfile.swift
Last active May 30, 2017 14:15 — forked from steipete/DevelopmentEnviromentDetector.m
Detect if you're currently running a development version or an App Store/Ad Hoc version (Re-implemented in Swift)
public struct ProvisioningProfile {
public static let sharedInstance = ProvisioningProfile()
#if (arch(i386) || arch(x86_64)) && os(iOS)
public let isDevelopment = true
#else
public let isDevelopment: Bool
private init() {
guard let provision = NSBundle.mainBundle().pathForResource("embedded", ofType: "mobileprovision"),
let data = NSData(contentsOfFile: provision) else {
isDevelopment = false
@rkawajiri
rkawajiri / latency.txt
Last active August 28, 2015 03:46 — forked from jboner/latency.txt
Latency Numbers Every Programmer Should Know
Latency Comparison Numbers
--------------------------
L1 cache reference 0.5 ns
Branch mispredict 5 ns
L2 cache reference 7 ns 14x L1 cache
Mutex lock/unlock 25 ns
Main memory reference 100 ns 20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy 3,000 ns
Send 1K bytes over 1 Gbps network 10,000 ns 0.01 ms
Read 4K randomly from SSD* 150,000 ns 0.15 ms

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