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Why doesn't 'ref' and 'out' support polymorphism?
...e, Giraffe, Turtle and Tiger, with the obvious subclassing relationships.
Now suppose you have a method void M(ref Mammal m). M can both read and write m.
Can you pass a variable of type Animal to M?
No. That variable could contain a Turtle, but M will assume that it contains only Mamma...
Why doesn't RecyclerView have onItemClickListener()?
...x use cases. And as you say, your solution is what google expected of you. Now you have an adapter who can delegate onClick to an interface passed on the constructor, which is the correct pattern for both ListView and Recyclerview.
public static class ViewHolder extends RecyclerView.ViewHolder impl...
How do you create a hidden div that doesn't create a line break or horizontal space?
... div from display: none to display: inline-block or equivalent without the now-displayed div taking up space and moving my other DOM elements around?
– bpromas
Sep 25 '15 at 18:23
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Foreign key constraint may cause cycles or multiple cascade paths?
...guaranteed that SomeOtherTable-records never belong to both Details, it is now impossible to make SomeOhterTable's records cascade delete for both details, because there are multiple cascading paths from Master to SomeOtherTable (one via Detail1 and one via Detail2).
Now you may already have underst...
Long press on UITableView
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Don't forget, gesture recognizers can now be added to UI elements directly in Interface Builder and connected through an IBAction method, so this answer is even easier ;-) (just remember to attach the recognizer to the UITableView, not the UITableViewCell...)
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clear javascript console in Google Chrome
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Update: As of November 6, 2012, console.clear() is now available in Chrome Canary.
If you type clear() into the console it clears it.
I don't think there is a way to programmatically do it, as it could be misused. (console is cleared by some web page, end user can't acce...
Running PostgreSQL in memory only
...a little easier with the advent of include_dir support in postgresql.conf; now you can just append one line, then write a generated config file for all the rest.
Faster testing with PostgreSQL
For more information about how to safely improve the performance of PostgreSQL for testing purposes, see ...
How to determine if a number is a prime with regex?
...ce again the returning of the negation of the match result.
Do you see it now? It's unbelievably tricky (and computationally expensive!) but it's also kind of simple at the same time, once you get it. :-)
I can elaborate if you have further questions, like on how regex parsing actually works. But ...
IIS_IUSRS and IUSR permissions in IIS8
...ine):
Press OK to add the user
With the new user (your domain) selected, now you can safely provide any Modify or Write permissions
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Refresh image with a new one at the same url
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There is Date.now() for this
– vp_arth
Dec 24 '15 at 6:12
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