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What is a callback?
What's a callback and how is it implemented in C#?
11 Answers
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How to remove application from app listings on Android Developer Console
Is there any way to unpublish and then permanently remove an application from the list of applications on Android Developer Console?
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Are Swift variables atomic?
In Objective-C you have a distinction between atomic and nonatomic properties:
6 Answers
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Difference between len() and .__len__()?
...y calling an object's __len__ method. __something__ attributes are special and usually more than meets the eye, and generally should not be called directly.
It was decided at some point long ago getting the length of something should be a function and not a method code, reasoning that len(a)'s mean...
appending array to FormData and send via AJAX
I'm using ajax to submit a multipart form with array, text fields and files.
9 Answers
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How to completely uninstall Android Studio on Mac?
I recently downloaded Android Studio on my Macbook Pro and I messed up with it every time I open it. It gives me plugin errors and several other errors. I need to uninstall it completely from my mac. I tried to delete it from my mac and then install it again as if you would do the first time, but it...
Tomcat startup logs - SEVERE: Error filterStart how to get a stack trace?
...that type of info. I wouldn't expect the full stacktrace to be dumped to standard out.
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How can I style even and odd elements?
Is it possible to use CSS pseudo-classes to select even and odd instances of list items?
9 Answers
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How do I find duplicates across multiple columns?
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Duplicated id for pairs name and city:
select s.id, t.*
from [stuff] s
join (
select name, city, count(*) as qty
from [stuff]
group by name, city
having count(*) > 1
) t on s.name = t.name and s.city = t.city
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Permission denied (publickey) when deploying heroku code. fatal: The remote end hung up unexpectedly
I'm attempting to deploy my code to heroku with the following command line:
34 Answers
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