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Select tableview row programmatically
...tRowAtIndexPath: message, nor does it send UITableViewSelectionDidChangeNotification notifications to observers.
What I would do is:
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
[self doSomethingWithRowAtIndexPath:indexPath];
}
And then, from...
Best practices around generating OAuth tokens?
I realize that the OAuth spec doesn't specify anything about the origin of the ConsumerKey, ConsumerSecret, AccessToken, RequestToken, TokenSecret, or Verifier code, but I'm curious if there are any best practices for creating significantly secure tokens (especially Token/Secret combinations).
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How to convert a negative number to positive?
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>>> n = -42
>>> -n # if you know n is negative
42
>>> abs(n) # for any n
42
Don't forget to check the docs.
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Java Array Sort descending?
...rt() cannot be used directly to sort primitive arrays in descending order. If you try to call the Arrays.sort() method by passing reverse Comparator defined by Collections.reverseOrder() , it will throw the error
no suitable method found for sort(int[],comparator)
That will work fine with 'Ar...
Is there a way to hide the scroll indicators in a UIScrollView?
... As of iOS 11, this should be called in viewWillAppear, it doesn't work if called in viewDidLoad
– melvinto
Mar 8 '18 at 17:38
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Center image horizontally within a div
..., which is about the same as the width of the image, making it hard to see if it's actually centering the image. Here's my solution: jsfiddle.net/marvo/3k3CC/2
– Marvo
Jun 12 '12 at 2:38
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Handler “ExtensionlessUrlHandler-Integrated-4.0” has a bad module “ManagedPipelineHandler” in its mo
...in a scenario that it wasn't designed for. You are using it inside of IIS. If you look at the prior MSDN link (emphasis is mine):
Provides a simple implementation of the HttpWorkerRequest abstract class that can be used to host ASP.NET applications outside an Internet Information Services (IIS) ...
Git: See my last commit
...y other folks in this question, you can use git log -1, git show, and git diff to get the same sort of output. Personally, I tend to use git show <rev> when looking at individual revisions.
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What's the difference between identifying and non-identifying relationships?
I haven't been able to fully grasp the differences. Can you describe both concepts and use real world examples?
15 Answers
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Eager load polymorphic
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I tried this, but it surfaced a very interesting bug. If there is a Shop and a User with the same database ID, then calling review.shop on a review with reviewable_type set to User could return a completely unrelated Shop rather than nil. In some circumstances this can be a very...