shakemno

var backgroundColor: [UInt8] = [0, 0, 0, 0]

let GaussianBlurKernel: [Int16] =
[   1, 4, 6, 4, 1,
    4, 16, 24, 16, 4,
    6, 24, 36, 24, 6,
    4, 16, 24, 16, 4,
    1, 4, 6, 4, 1
]

shakemno

import Accelerate
import UIKit

public extension UIImage {
    public func applyLightEffect() -> UIImage? {
        return applyBlur(radius: 30, tintColor: UIColor(white: 1, alpha: 0.3))
    }
    
    public func applyExtraLightEffect() -> UIImage? {
        return applyBlur(radius: 20, tintColor: UIColor(white: 0.97, alpha: 0.82))

shakemno

// Assumes ARGB8888
CGImageRef CGImageCreateBlurredImage(CGImageRef inImage, NSUInteger blurRadius)
{
    if (!inImage) { return NULL; }

    uint32_t radius = (blurRadius % 2) ? (uint32_t)blurRadius : (uint32_t)++blurRadius;
    vImage_Error error;
    vImage_CGImageFormat imageFormat = {(uint32_t)CGImageGetBitsPerComponent(inImage), (uint32_t)CGImageGetBitsPerPixel(inImage), CGImageGetColorSpace(inImage), CGImageGetBitmapInfo(inImage), 0, NULL, kCGRenderingIntentDefault};
    
    vImage_Buffer source;

shakemno

// https://crunchybagel.com/blend-uicolor-swift-extension/

extension UIColor {

    func blend(with: UIColor) -> UIColor {

        var orgR: CGFloat = 0, orgG: CGFloat = 0, orgB: CGFloat = 0, orgA: CGFloat = 0
        var overR: CGFloat = 0, overG: CGFloat = 0, overB: CGFloat = 0, overA: CGFloat = 0

        self.getRed(&orgR, green: &orgG, blue: &orgB, alpha: &orgA)

shakemno

XCode swift

let docDirPath =
NSSearchPathForDirectoriesInDomains(.documentDirectory,
                                    .userDomainMask, true).first
print(docDirPath)

let docDirUrl =
    FileManager.default.urls(for: .documentDirectory,
 in: .userDomainMask).first

shakemno

TAGS="TODO:|FIXME:"
ERRORTAG="ERROR:"
HELPERS="fdescribe|fcontext|fit"

VIOLATIONS=$(find "${SRCROOT}" "./SUBDIRA" "./SUBDIRB" \
    \( -name "*.h" -or -name "*.m" -or -name "*.swift" \) -print0 | xargs -0 egrep --with-filename --line-number \
    --only-matching "($TAGS).*\$|($ERRORTAG).*|($HELPERS).*\$" |\
    perl -p -e "s/($TAGS)/ warning: \$1/" |\
    perl -p -e "s/($ERRORTAG)/ error: \$1/" |\
    perl -p -e "s/($HELPERS)/ error: \$1/")

shakemno

sudo killall -9 com.apple.CoreSimulator.CoreSimulatorService

# https://stackoverflow.com/a/57159637

shakemno

#!/usr/bin/env bash

# This function lets you easily create series of commands into a single call
# It will print each successive command, run it and, as long as it returned
# with code 0, continue to the next step.
# If any step fails, it will stop and let you pick it back up after you fix the
# issues.
#
# Example of script using this function:
# !/usr/bin/env bash

shakemno

Swift Concurrency Manifesto

Author: Chris Lattner

Contents

• Introduction
• Overall Vision
• Part 1: Async/await: Beautiful asynchronous APIs
• Part 2: Actors: Eliminating shared mutable state

shakemno

import UIKit

struct UILabelDebugOptions: OptionSet {
    let rawValue: Int

    static let bounds    = UILabelDebugOptions(rawValue: 1 << 0)
    static let ascender  = UILabelDebugOptions(rawValue: 1 << 1)
    static let descender = UILabelDebugOptions(rawValue: 1 << 2)
    static let xHeight   = UILabelDebugOptions(rawValue: 1 << 3)
    static let capHeight = UILabelDebugOptions(rawValue: 1 << 4)