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Markos Zoulias Charatzas qnoid
macshome
/ TheWisdomOfQuinn.md
Last active
July 8, 2024 16:24
IanKeen
/ LosslessCodable.swift
Last active
May 22, 2024 20:06
PropertyWrapper: LosslessCodable attempts to brute force convert the incoming value to the required type - the underlying type is maintained and used when encoding the value back
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| public typealias LosslessStringCodable = LosslessStringConvertible & Codable | |
| @propertyWrapper | |
| public struct LosslessCodable<Value: LosslessStringCodable>: Codable { | |
| private let type: LosslessStringCodable.Type | |
| public var wrappedValue: Value | |
| public init(wrappedValue: Value) { | |
| self.wrappedValue = wrappedValue |
douglashill
/ AdaptiveTraitsContainer.swift
Created
April 13, 2019 01:15
Experimenting altering an iOS app size class to be responsive to the Dynamic Text size.
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| import UIKit | |
| /// A wrapper view controller that makes the horizontal size class | |
| /// be based on both the Dynamic Text size and the width available. | |
| class AdaptiveTraitsContainer: UIViewController { | |
| let wrappedViewController: UIViewController | |
| init(wrappedViewController: UIViewController) { | |
| self.wrappedViewController = wrappedViewController | |
| super.init(nibName: nil, bundle: nil) |
mayoff
/ convert.swift
Last active
June 16, 2021 23:07
How to convert from DispatchData to Data without copying the bytes
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| import Dispatch | |
| import Foundation | |
| var x = 7 | |
| let dd = withUnsafeBytes(of: &x, { DispatchData.init(bytes: $0) }) | |
| print(dd as? Data) // Case 1: nil | |
| print(dd as? NSData) // Case 2: nil | |
| print(dd as Any as? Data) // Case 3: nil | |
| print(dd as Any as? NSData) // Case 4: .some | |
| print(dd as Any as? NSData as Data?) // Case 5: .some |
mxcl
/ swift-self-build
Last active
April 21, 2023 17:13
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| #!/bin/bash | |
| # | |
| # Faster toolchain build: skips as much as possible. | |
| # | |
| # To use this toolchain from the command line:" | |
| # export TOOLCHAINS=$(whoami) | |
| # | |
| # we build to the same prefix every time (instead of building | |
| # to a versioned prefix) because every time the prefix changes | |
| # *everything* rebuilds. |
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| // | |
| // DON'T do this, or else you risk a deadlock (e.g., by accidentally performing it in a different order somewhere) | |
| // | |
| dispatch_async(firstQueue, ^{ | |
| dispatch_sync(secondQueue, ^{ | |
| // code requiring both queues | |
| }); | |
| }); |
mattshepherd
/ apple help book example.txt
Last active
November 3, 2022 13:32
To support the table of contents button in the OS X Help Book app you need to implement the following code. This isn't documented anywhere but I found it in Apple's own help files and tested it to work. I believe it only works in the more recent versions of OS X, so you if your app supports really old versions you might want to check it.
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| //disable TOC button | |
| window.HelpViewer.showTOCButton(false); | |
| //enable TOC button | |
| //If you call this on window load it will flash active for a brief second and then disable again. | |
| //Call if after a delay of 250ms and is works fine | |
| //Not sure what the second variable does yet, but passing false works fine | |
| window.HelpViewer.showTOCButton( true, false, function() { | |
| //do something to toggle TOC in your webpage | |
| }); |
steipete
/ NSData+PSPDFFoundation.m
Created
July 16, 2015 08:08
After playing around with dispatch_io (https://gist.github.com/steipete/b22babbf3014e29c19f0), I ended up with this. Upside: Uses way less memory, controllable caching, similar performance, simpler code and supports priority donation implicitly since everything's sync.
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| static NSData *PSPDFCalculateSHA256FromFileURL(NSURL *fileURL, CC_LONG dataLength, NSError **error) { | |
| NSCParameterAssert(fileURL); | |
| NSData *shaData; | |
| int fd = open(fileURL.path.UTF8String, O_RDONLY); | |
| if (fd < 0) { | |
| if (error) *error = [NSError pspdf_errorWithCode:PSPDFErrorCodeUnableToOpenPDF description:@"Failed to open file for calculating SHA256."]; | |
| return nil; | |
| } |
steipete
/ NSData+PSPDFFoundation.m
Last active
March 21, 2017 16:00
Haven't done much with dispatch_io yet so I'd appreciate a few more eyeballs on this. Am I closing things correctly in all error conditions? Are there other knobs I could change to make things even faster? (I know I've been lazy on the NSError's)
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| static NSData *PSPDFCalculateSHA256FromFileURL(NSURL *fileURL, CC_LONG dataLength, NSError **error) { | |
| NSCParameterAssert(fileURL); | |
| dispatch_queue_t shaQueue = dispatch_queue_create("com.pspdfkit.sha256-queue", DISPATCH_QUEUE_SERIAL); | |
| __block dispatch_io_t readChannel; | |
| void (^processIntError)(int intError) = ^(int intError) { | |
| if (intError != 0) { | |
| PSPDFLogWarning(@"Stream error: %d", intError); | |
| if (error) *error = [NSError errorWithDomain:@"SHA256Error" code:100 userInfo:@{NSLocalizedDescriptionKey: @"failed to open file for calculating SHA256."}]; |
praeclarum
/ ArrayDiff.swift
Last active
January 8, 2021 06:10
A generic diffing operation that can calculate the minimal steps needed to convert one array to another. It can be used to generate standard diffs, or it can be used more creatively to calculate minimal UI updates.
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| // | |
| // ArrayDiff.swift | |
| // | |
| // Created by Frank A. Krueger on 6/30/15. | |
| // Copyright © 2015 Krueger Systems, Inc. All rights reserved. | |
| // License: MIT http://opensource.org/licenses/MIT | |
| // | |
| import Foundation |
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