lukeredpath

@interface UITableViewCell (FixConstraints)

/* Finds any constraints that relate between a subview of the cell's content
 * view and the cell itself, and replaces them with otherwise identical constraints
 * that replace the cell with the content view.
 *
 * This works around a bug in Interface Builder where subviews added to a content
 * view have their constraints related to the cell itself and not the content view,
 * which can cause problems if you need to move the content view in any way (e.g.
 * swipe to delete).

lukeredpath

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lukeredpath

I have an entity Foo, which has a 1-n relationship with Bar. Bar has a 1-n relationship with Baz.

On the main thread, the UI is showing a list of all the Bars in a single Foo. I am using KVO on Foo's bars relationship to detect when Bars are added to Foo.

Using a child MOC of the main MOC (the UI uses the main MOC), I create a new Bar, associate it with a couple of Baz objects, then add it to Foo's bars relationship.

Then I save the child MOC, which causes its changes to be merged into the main MOC.

At this point, my KVO observer on foo.bars fires, and when I inspect the change dictionary, I see my inserted Bar object however, the Bar's bazes relationship is empty!

lukeredpath

NSManagedObjectContext *contextOne = ...;
NSArray *objects = ...<result of fetch request on contextOne...
NSManagedObjectID *objectID = objects[0].objectID;

NSManagedObjectContext *contextTwo = ...;
id object = [contextTwo existingObjectWithID:objectID error:nil]; // returns the right object
NSAssert(![object.objectID isTemporaryID]); // passes

id otherObject = [contextTwo objectWithID:objectID]; // always returns an object, should be the right object
NSAssert(![otherObject.objectID isTemporaryID]); // fails!

lukeredpath

EPISILON = 0.01 # calculate to the nearest cent

def calculate_balance_remaining_after_year(starting_balance, monthly_payment, annual_interest_rate)
  12.times.reduce(starting_balance) do |balance|
    balance -= monthly_payment
    balance += (annual_interest_rate / 12) * balance
  end
end

def calculate_lowest_payment_within_bounds(starting_balance, annual_interest_rate, lower_bound, upper_bound)

lukeredpath

NSLayoutConstraintBuilder *builder = [NSLayoutConstraintBuilder builder];

UIView *mySubview = [[UIView alloc] initWithFrame:CGRectZero];

// API deliberately mirrors the terminology of IB:

[builder pin:mySubview toWidth:200];
[builder pin:mySubview toHeight:200];
[builder pin:mySubview toSize:CGSizeMake(200, 200)];

lukeredpath

/* Allows you to give a context a descriptive name to aid in
 * debugging.
 */
@interface NSManagedObjectContext (DescriptiveName)

@property (nonatomic, copy) NSString *descriptiveName;

@end

lukeredpath

NSCalendar *utcCalendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSISO8601Calendar];
  [utcCalendar setTimeZone:[NSTimeZone timeZoneWithName:@"UTC"]];

lukeredpath

State A (current):

branch foo: A -- B -- C -- D
                           \
branch bar:                 -- E -- F -- G --H

I want commit E from bar brought back into foo, without cherry-picking and creating a new commit. Essentially I want to go to this:

State B:

lukeredpath

Pod::Spec.new do |s|
  s.name         = 'LRMocky'
  s.version      = '1.0'
  s.license      = 'MIT'
  s.summary      = 'A mock object library for Objective C, inspired by JMock 2.0'
  s.homepage     = 'http://github.com/lukeredpath/LRMocky'
  s.authors      = { 'Luke Redpath' => '[email protected]' }
  s.source       = { :git => 'https://github.com/lukeredpath/LRMocky.git' }
  s.requires_arc = true