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SQL JOIN - WHERE clause vs. ON clause
...e results, does not mean the two kinds of clauses have the same semantic meaning.
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How to add dividers and spaces between items in RecyclerView?
... mRecyclerView.setLayoutManager(mLayoutManager);
mRecyclerView.setItemAnimator(new DefaultItemAnimator());
return rootView;
}
I'm sure additional styling can be done, but it's a starting point. :)
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What happens to a github student account's repositories at the end of 2 years?
I just got upgraded to a free github micro plan using my university email address. I'm planning to use the private repositories for some class projects this semester, but I'm wondering what will happen to those repositories at the end of 2 years when my free student upgrade expires. I'm assuming it'...
What are the differences between delegates and events?
...on - that is a kind of delegate that doesn't return a value)
public class Animal
{
public Action Run {get; set;}
public void RaiseEvent()
{
if (Run != null)
{
Run();
}
}
}
To use the delegate, you should do something like this:
Animal animal= ...
how to emulate “insert ignore” and “on duplicate key update” (sql merge) with postgresql?
Some SQL servers have a feature where INSERT is skipped if it would violate a primary/unique key constraint. For instance, MySQL has INSERT IGNORE .
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How to check for an active Internet connection on iOS or macOS?
... answered Jul 5 '09 at 10:58
Daniel RinserDaniel Rinser
8,68044 gold badges3737 silver badges3939 bronze badges
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Is errno thread-safe?
In errno.h , this variable is declared as extern int errno; so my question is, is it safe to check errno value after some calls or use perror() in multi-threaded code. Is this a thread safe variable? If not, then whats the alternative ?
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load and execute order of scripts
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A great summary by @addyosmani
Shamelessly copied from https://addyosmani.com/blog/script-priorities/
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What are the Dangers of Method Swizzling in Objective-C?
I have heard people state that method swizzling is a dangerous practice. Even the name swizzling suggests that it is a bit of a cheat.
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How to affect other elements when one element is hovered
What I want to do is when a certain div is hovered, it'd affect the properties of another div .
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