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@andymatuschak
andymatuschak / CollectionViewDataSource.swift
Last active February 12, 2021 09:44
Type-safe value-oriented collection view data source
//
// CollectionViewDataSource.swift
// Khan Academy
//
// Created by Andy Matuschak on 10/14/14.
// Copyright (c) 2014 Khan Academy. All rights reserved.
//
import UIKit
@catlan
catlan / gist:01eb0f83554e44335c2a
Last active May 10, 2024 15:05 — forked from MrRooni/gist:4988922
Updated based on @prendio2 suggestions https://gist.github.com/MrRooni/4988922#comment-924729
@interface SomeViewController ()
// Declare some collection properties to hold the various updates we might get from the NSFetchedResultsControllerDelegate
@property (nonatomic, strong) NSMutableIndexSet *deletedSectionIndexes;
@property (nonatomic, strong) NSMutableIndexSet *insertedSectionIndexes;
@property (nonatomic, strong) NSMutableArray *deletedRowIndexPaths;
@property (nonatomic, strong) NSMutableArray *insertedRowIndexPaths;
@property (nonatomic, strong) NSMutableArray *updatedRowIndexPaths;
@end
@iOSDigital
iOSDigital / gist:8379249
Created January 12, 2014 01:14
UIImage doesn't have a tint colour. UIImageView does. This little method returns a UIImage, tinted with a UIColor. It's useful for things like table icons, where the image view is read only. Means you don't have to create loads of PNGs in different colours.
-(UIImage *)imageWithTint:(UIImage *)image andTintColor:(UIColor *)tintColor {
UIImage *imageNew = [image imageWithRenderingMode:UIImageRenderingModeAlwaysTemplate];
UIImageView *imageView = [[UIImageView alloc] initWithImage:imageNew];
imageView.tintColor = tintColor;
UIGraphicsBeginImageContextWithOptions(imageView.bounds.size, NO, 0.0);
[imageView.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage *tintedImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();