bgulanowski

//
//  NSString+SnakeMaking.h
//  Test
//
//  Created by Brent Gulanowski on 2015-08-22.
//  Copyright (c) 2015 Lichen Labs. All rights reserved.
//

#import <Foundation/Foundation.h>

bgulanowski

@implementation UIView (SubviewReplacing)

- (void)replaceSubview:(UIView *)subview withView:(UIView *)newView
{
	newView.frame = subview.frame;
	[self addSubview:newView];
	for (NSLayoutConstraint *constraint in [subview.constraints arrayByAddingObjectsFromArray:self.constraints]) {
		id firstItem = nil;
		id secondItem = nil;
		if (constraint.firstItem == subview) {

bgulanowski

Delegate Protocols

Delegates are now the de-facto way for two objects to communicate. Delegation is good, because it ostensibly reduces coupling. An object which has a delegate can work with any object that implements the protocol. But this has led to a situation where delegate protocols are being over-relied upon. It has been used in places where coupling is unavoidable, or whether other, simpler mechanisms are available. Some protocols are also being defined before the functional requirements are even understood, leading to overly verbose protocols with methods that aren't used.

The primary case for delegation is when an object of one class needs support from an additional object to do its work successfully. The word "delegate" was originally meant specifically for this case. The first object, the delegator, uses the delegate to make decisions which the delegator can't make itself.

Notifications

If you create a delegate protocol where none of the methods actually involves delegating responsibi

bgulanowski

#import <libkern/OSAtomic.h>

static int32_t globalCounter;

@interface Test : NSObject

@property uint counter;
@property id observer;

@end

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const NSUInteger MAX = 10000;
NSString *first = @"MY_KEY";
NSString *last = [NSString stringWithFormat:@"MY_KEY%c", 127]; // key beyond the last printable character '~'
__block NSUInteger biggest = 0;
__block NSString *biggestKey = nil;

[db enumerateFromKey:first toKey:last block:^(NSString *key, NSData *value) {

	NSUInteger length = [value length];

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BOOL exists = [myDB storedValueExistsForKey:@"country"];

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BOOL success = [myDB deleteStoredValueForKey:@"age"];

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id address = [myDB storedValueForKey:@"address"];

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BOOL success = [myDB storeValue:@"Brent Gulanowski" forKey:@"name"];

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NULDBDB *myDB = [[[NULDBDB alloc] initWithLocation:@"/tmp" bufferSize:(1<<22)] autorelease];