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hishma / String+RFC3986.swift
Created Oct 23, 2019
Percent encode a URL String
View String+RFC3986.swift
import Foundation
extension String {
public func addingPercentEncodingForRFC3986() -> String? {
let unreserved = "-._~/?"
let allowed = NSMutableCharacterSet.alphanumeric()
allowed.addCharacters(in: unreserved)
return self.addingPercentEncoding(withAllowedCharacters: allowed as CharacterSet)
hishma / VariantHandlingErrorMiddleware.swift
Last active Sep 15, 2019
Vapor 3 middleware to respond with errors based on the requested media type
View VariantHandlingErrorMiddleware.swift
import Vapor
import LeafErrorMiddleware
import APIErrorMiddleware
/// Respond with errors based on the requested media type
public final class VariantHandlingErrorMiddleware: Middleware, ServiceType {
public static func makeService(for container: Container) throws -> Self {
return self.init(environment: container.environment)
hishma / measure.swift
Created Sep 3, 2019
Prints the time taken to execute a closure.
View measure.swift
/// Prints the time taken to execute a closure.
/// Note: Only for debugging purposes.
public func measure<T>(_ label: String = "", _ f: () throws -> (T)) rethrows -> T {
let startTime = Date()
let result = try f()
let endTime = Date().timeIntervalSince(startTime)
print("\(label): Time taken", endTime)
return result
hishma /
Last active Aug 30, 2019
Open hidden files on Mac OS

When the open panel is showing, press Command-Shift-. and the hidden files will appear.



If you are using the iso8601 strategy, you may not want to rely on the default Equatable implementation for Date (==) when comparing dates. You can use a good old fashion calendar comparison instead.


JSONEncoder and JSONDecoder can both be configured with a strategy (dateEncodingStrategy and dateDecodingStrategy) for encoding and decoding dates. There are four named types in addition to allowing you to provide custom options.

| Strategy | Comment |

View XCTestCase+Error.swift
import XCTest
extension XCTestCase {
/// Asserts that an expression throws a specific error.
/// - Parameters:
/// - expression: An expression that can throw an error.
/// - throws: The expected `Error`. Must conform to the `Equatable` protocol.
/// - file: The file in which failure occurred. Defaults to the file name of the test case in which this function was called.
/// - line: The line number on which failure occurred. Defaults to the line number on which this function was called.
View CoreDataErrors.h
Core Data
Copyright (c) 2004-2012 Apple Inc.
All rights reserved.
#import <Foundation/NSObject.h>
/* NSError codes for Core Data added errors in NSCocoaErrorDomain. Foundation error codes can be found in <Foundation/FoundationErrors.h>. AppKit error codes can be found in <AppKit/AppKitErrors.h>.
hishma / measure.swift
Last active Apr 5, 2019
Time a function in swift
View measure.swift
static func measure<T>(name: String = "", _ block: () -> T) -> T {
let startTime = CFAbsoluteTimeGetCurrent()
let result = block()
let timeElapsed = CFAbsoluteTimeGetCurrent() - startTime
print("Time: \(name) - \(timeElapsed)")
return result
hishma /
Last active Apr 2, 2019
Shell script to update the build number (CFBundleVersion) of the info.plist in the build folder.
# Shamelessly ripped of from
git=`sh /etc/profile; which git`
bundleVersion=`"$git" rev-list --all | wc -l | tr -d '[:space:]'`
/usr/libexec/PlistBuddy -c "Set :CFBundleVersion $bundleVersion" "${TARGET_BUILD_DIR}/${INFOPLIST_PATH}"
echo "☛ BUILD NUMBER: ${bundleVersion}"
View AsynchronousOperation.swift
public class AsynchronousOperation: Operation {
@objc private enum State: Int {
case ready, executing, finished
private var _state = State.ready
private let stateQueue = DispatchQueue(label: Bundle.main.bundleIdentifier! + ".op.state", attributes: .concurrent)
@objc private dynamic var state: State {
get { return stateQueue.sync { _state } }
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