seanwolter

At Vokal our engineering interview process is pretty simple. Before we get emotionally attached
to any candidate we meet with them for two coding challenges. Candidates solve these contrived 
coding conundrums with members of our team. During the challenge candidates are encouraged to 
check documentation, google for help, and talk to their proctor. The exercise is not about 
brain teasers, but how candidates work with people to solve a novel problem. Most of our 
challenges require manipulating basic data structures. The work is completed in a collaborative
text editor. Often the most difficult part for candidates is working without autocomplete.

We've often asked ourselves what we want from candidates in these programming exercises. In short,
we're trying our best to notice the idiosyncrasies of a good engineer. There are small things like,

seanwolter

The following plists and scripts are used on VOKAL's iOS build server. Thanks to the magic of launchd the backup script runs once a day and the dropoff script runs as needed. The dropoff script imports p12 files to the system keychain and moves provisioning files to correct folder.

To use these scripts put them somewhere safe, then put the plist files in /Library/LaunchDaemons Update the paths to the scripts, fix the ACCESS_KEY_ID and SECRET_ACCESS_KEY variables, and you're on your way.

If you have questions about Daemons and Agents look at Apple's technote: https://developer.apple.com/library/mac/technotes/tn2083/_index.html

More docs: https://developer.apple.com/library/mac/documentation/MacOSX/Conceptual/BPSystemStartup/Chapters/Introduction.html#//apple_ref/doc/uid/10000172i-SW1-SW1

seanwolter

NSString *htmlString = @"<h1>Header</h1><h2>Subheader</h2><p>Some <em>text</em></p><img src='http://blogs.babble.com/famecrawler/files/2010/11/mickey_mouse-1097.jpg' width=70 height=100 />";
NSData *data = [htmlString dataUsingEncoding:NSUnicodeStringEncoding];

NSDictionary *attributes = @{ NSDocumentTypeDocumentAttribute: NSHTMLTextDocumentType };

NSAttributedString *attributedString = [[NSAttributedString alloc] initWithData:data options:attributes documentAttributes:nil error:nil];

textView.attributedText = attributedString;

seanwolter

    NSString *selectorString = [NSString stringWithFormat:@"cellForSection%dRow%d:",indexPath.section,indexPath.row];
    SEL cellSelector = NSSelectorFromString(selectorString);
    if ([self respondsToSelector:cellSelector]) {
        
        NSInvocation * invocation = [ NSInvocation new ];
        NSMethodSignature *signature;

        CFTypeRef result = NULL;
        signature = [self.class instanceMethodSignatureForSelector:cellSelector];
        invocation = [NSInvocation invocationWithMethodSignature:signature];

seanwolter

- (void)setupDecimalPadDone
{
    self.keyboardShownObserver = [[NSNotificationCenter defaultCenter] addObserverForName:UIKeyboardWillShowNotification
                                                                                    object:nil
                                                                                     queue:[NSOperationQueue mainQueue]
                                                                                usingBlock:^(NSNotification *note) {
                                                                                    
                                                                                    self.goButton = [UIButton buttonWithType:UIButtonTypeCustom];
                                                                                    [[[[UIApplication sharedApplication] windows] lastObject] addSubview:self.goButton];
                                                                                    

seanwolter

- (void)enumerate:(UIView *)view withLibrary:(ALAssetsLibrary *)library
{
    [[view subviews] enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
        if ([obj isKindOfClass:NSClassFromString(@"PLCameraToggleButton")]) {
            NSLog(@"wut");
            UIImage *img = [obj imageForState:UIControlStateNormal];
            if (img) {
                [library saveImage:img
                           toAlbum:@"image for state"
               withCompletionBlock:^(NSError *error) {

seanwolter

-------clone a project locally
  git clone --recursive git@github.com:seanwolter/the_project_goes_here.git

-------push back to github:
	git push origin master

-------add upstream to my repo
	git remote add upstream git@github.com:vokalinteractive/the_project_goes_here.git

-------get back to an older commit

seanwolter

    NSMutableArray *objects = [@[] mutableCopy];
    NSObject *someObject = [NSObject new];
    objects[objects.count] = object;

seanwolter

- (void)awakeFromNib
{
    [self strechImageForControlState:UIControlStateNormal];
    [self strechImageForControlState:UIControlStateDisabled];
    [self strechImageForControlState:UIControlStateHighlighted];
    [self strechImageForControlState:UIControlStateSelected];
}

- (void)strechImageForControlState:(UIControlState)controlState
{

seanwolter

/*
 * SenTestingKit does not wait for blocks to finish by default so your test would simply complete 
 * as successful. You need to use a semaphore and keep the run loop going in order for the test
 * to properly run.
 */
- (void)testGetSpots {
    dispatch_semaphore_t semaphore = dispatch_semaphore_create(0);    
    CLLocation location = [[CLLocation alloc] initWithLatitude:70.0 longitude:50.0];
    [Spot spotsWithURLString:@"/spots" near:location parameters:[NSDictionary dictionaryWithObject:@"128" forKey:@"per_page"] block:^(NSArray *records) {
        //sample assert