Bryan Irace irace

## Example.swift
import PlaygroundSupport

// using constrained static members on `Style` we can create presets
extension Style where T: UIButton {
    static var global: Style<UIButton> {
        return .init { button in
            button.backgroundColor = .blue
            button.setTitleColor(.red, for: .normal)
        }
    }

## index.html
<!doctype html>
<html ng-app="timezoneApp">
	<head>
		<title>Team Timezones</title>
		<script src="//ajax.googleapis.com/ajax/libs/angularjs/1.4.5/angular.min.js"></script>
		<script>
			var period = 172800; // 2 days in seconds
			var now = new Date();
			var utc = new Date( now.getTime() + now.getTimezoneOffset() * 60000 );
			var seconds_today = utc.getSeconds() + ( 60 * ( utc.getMinutes() + ( 60 * utc.getHours() ) ) );

## gist:dbffbf54274a880a6ac7
// This is pretty clean, but I often dislike chains of temporary variables
// They tend to lead to little bugs when you use the wrong one. Swift's warnings
// and 'let' reduce problems, though.
func pagesFromOpenSearchData(data: NSData) throws -> [Page] {
    let json = try NSJSONSerialization.JSONObjectWithData(data, options: NSJSONReadingOptions())

    guard      let array  = json as? [JSON]                 else { throw JSONError.BadArray(json) }
    guard case let value  = array[1] where array.count >= 2 else { throw JSONError.OutOfRange }
    guard      let titles = value as? [String]              else { throw JSONError.BadStringList(json) }

## Box.m
#import <Foundation/Foundation.h>

@interface Box<__covariant T: __kindof NSObject *> : NSObject

@property (nonatomic, readonly) __nonnull T value;

- (nonnull instancetype)initWithValue:(nonnull T)value;

@end

## gist:6b9761670a131f821ad5

      
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                Why understanding monads is important.
              
          
    Response to a question on Twitter:


Either and Promises/Futures are useful and I’ll use them next time they’re appropriate. But outside Haskell does their monad-ness matter?

(All code below is written in some made-up Java-like syntax, and inevitably contains bugs/typos. I'm also saying "point/flatMap" instead of "return/bind" because that's my audience. Any correspondance with anything that either be programatically or mathematically useful is coincidental)
What is a monad? A refresher.

A monad is something that implements "point" and "flatMap" correctly.

  
## functionalRefactor.swift
// Original implementation with multiple returns:

class func fromId(id: String) -> Office? {
   let officesData = JSONData.load("offices") as? [[String: String]] ?? []
   let officeData = officesData.filter { $0["id"] == id }.first

   if let office = officeData {
      return decode(JSONValue.parse(office))
   }


## FetchedResultsControllerTableViewDataSource.h
//
//  FetchedResultsControllerTableViewDataSource.h
//  Flock
//
//  Created by Matthew Bischoff on 2/14/15.
//  Copyright (c) 2015 Lickability. All rights reserved.
//

@import Foundation;
@import CoreData;

## gist:598fa75e22bdfa44cf47

      
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              April 2, 2024 18:21
            
          
2015-01-29 Unofficial Relay FAQ

Compilation of questions and answers about Relay from React.js Conf.

Disclaimer: I work on Relay at Facebook. Relay is a complex system on which we're iterating aggressively. I'll do my best here to provide accurate, useful answers, but the details are subject to change. I may also be wrong. Feedback and additional questions are welcome.


What is Relay?


Relay is a new framework from Facebook that provides data-fetching functionality for React applications. It was announced at React.js Conf (January 2015).
  

## Makefile
# Hello, and welcome to makefile basics.
#
# You will learn why `make` is so great, and why, despite its "weird" syntax,
# it is actually a highly expressive, efficient, and powerful way to build
# programs.
#
# Once you're done here, go to
# http://www.gnu.org/software/make/manual/make.html
# to learn SOOOO much more.

## PSPDFCheckAgainstIncompatible3rdPartyCode.m
BOOL PSPDFSystemFunctionOverriddenInCategory(Class theClass, SEL selector, NSString *__autoreleasing* categoryName) {
    NSCParameterAssert(theClass);
    NSCParameterAssert(selector);

    Dl_info info;
    if (dladdr(class_getMethodImplementation(theClass, selector), &info)) {
        // /System/Library/Frameworks is a common denominator, some methods are in /usr/lib/libobjc.A.dylib
        // Custom app is in /private/var/mobile/Containers/Bundle/Application/<UID>/PSPDFCatalog.app/PSPDFCatalog
        if (!strstr(info.dli_fname, "/System/Library") && !strstr(info.dli_fname, "/usr/lib")) {
            if (categoryName) *categoryName = @(info.dli_sname);
	import PlaygroundSupport

	// using constrained static members on `Style` we can create presets
	extension Style where T: UIButton {
	static var global: Style<UIButton> {
	return .init { button in
	button.backgroundColor = .blue
	button.setTitleColor(.red, for: .normal)
	}
	}
	<!doctype html>
	<html ng-app="timezoneApp">
	<head>
	<title>Team Timezones</title>
	<script src="//ajax.googleapis.com/ajax/libs/angularjs/1.4.5/angular.min.js"></script>
	<script>
	var period = 172800; // 2 days in seconds
	var now = new Date();
	var utc = new Date( now.getTime() + now.getTimezoneOffset() * 60000 );
	var seconds_today = utc.getSeconds() + ( 60 * ( utc.getMinutes() + ( 60 * utc.getHours() ) ) );
	// This is pretty clean, but I often dislike chains of temporary variables
	// They tend to lead to little bugs when you use the wrong one. Swift's warnings
	// and 'let' reduce problems, though.
	func pagesFromOpenSearchData(data: NSData) throws -> [Page] {
	let json = try NSJSONSerialization.JSONObjectWithData(data, options: NSJSONReadingOptions())

	guard let array = json as? [JSON] else { throw JSONError.BadArray(json) }
	guard case let value = array[1] where array.count >= 2 else { throw JSONError.OutOfRange }
	guard let titles = value as? [String] else { throw JSONError.BadStringList(json) }
	#import <Foundation/Foundation.h>

	@interface Box<__covariant T: __kindof NSObject *> : NSObject

	@property (nonatomic, readonly) __nonnull T value;

	- (nonnull instancetype)initWithValue:(nonnull T)value;

	@end
	// Original implementation with multiple returns:

	class func fromId(id: String) -> Office? {
	let officesData = JSONData.load("offices") as? [[String: String]] ?? []
	let officeData = officesData.filter { $0["id"] == id }.first

	if let office = officeData {
	return decode(JSONValue.parse(office))
	}
	//
	// FetchedResultsControllerTableViewDataSource.h
	// Flock
	//
	// Created by Matthew Bischoff on 2/14/15.
	// Copyright (c) 2015 Lickability. All rights reserved.
	//

	@import Foundation;
	@import CoreData;
	# Hello, and welcome to makefile basics.
	#
	# You will learn why `make` is so great, and why, despite its "weird" syntax,
	# it is actually a highly expressive, efficient, and powerful way to build
	# programs.
	#
	# Once you're done here, go to
	# http://www.gnu.org/software/make/manual/make.html
	# to learn SOOOO much more.
	BOOL PSPDFSystemFunctionOverriddenInCategory(Class theClass, SEL selector, NSString __autoreleasing categoryName) {
	NSCParameterAssert(theClass);
	NSCParameterAssert(selector);

	Dl_info info;
	if (dladdr(class_getMethodImplementation(theClass, selector), &info)) {
	// /System/Library/Frameworks is a common denominator, some methods are in /usr/lib/libobjc.A.dylib
	// Custom app is in /private/var/mobile/Containers/Bundle/Application/<UID>/PSPDFCatalog.app/PSPDFCatalog
	if (!strstr(info.dli_fname, "/System/Library") && !strstr(info.dli_fname, "/usr/lib")) {
	if (categoryName) *categoryName = @(info.dli_sname);