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How to get rid of the 'undeclared selector' warning
...ory method that should set an error property if the NSObject instance it's called on supports it. This is the code, and the code works as intended:
...
Accessing dict keys like an attribute?
...n the AttrDict() instance we are instantiating (as we are in __init__).
By calling super()'s __init__() method we made sure that it (already) behaves exactly like a dictionary, since that function calls all the dictionary instantiation code.
One reason why Python doesn't provide this functionality ...
Awaiting multiple Tasks with different results
...
@Sergey Calling WhenAll has no impact on when the operations execute, or how they execute. It only has any possibility of effecting how the results are observed. In this particular case, the only difference is that an error in one ...
When to use ref and when it is not necessary in C#
... or C++. Changes to the value of the parameter itself won't be seen by the caller, but changes in the object which the reference points to will be seen.
When a parameter (of any kind) is passed by reference, that means that any changes to the parameter are seen by the caller - changes to the parame...
Is it possible to use the SELECT INTO clause with UNION [ALL]?
...When we select all records it gives error as- "The ORDER BY clause is invalid in views, inline functions, derived tables, subqueries, and common table expressions, unless TOP or FOR XML is also specified. ". Please give some solution.
– ShaileshDev
Mar 21 '17 a...
How can you use optional parameters in C#?
...h(object o in theObjects)
{
// Something with the Objects…
}
}
Called like...
DoSomething(this, that, theOther);
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How do I simulate a hover with a touch in touch enabled browsers?
...is to your CSS as well:
.hover {
-webkit-user-select: none;
-webkit-touch-callout: none;
}
To stop the browser asking you to copy/save/select the image or whatever.
Easy!
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How to list containers in Docker
...
To list all running and stopped containers, showing only their container id
docker ps -aq
To remove all containers that are NOT running
docker rm `docker ps -aq -f status=exited`
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Why is Multiple Inheritance not allowed in Java or C#?
...
The short answer is: because the language designers decided not to.
Basically, it seemed that both the .NET and Java designers did not allow multiple inheritance because they reasoned that adding MI added too much complexity to the languages while providing too little benefit.
For a more fun and...
jQuery Click fires twice when clicking on label
...checked: jQuery('input').prop('checked', true);
– David Sinclair
Sep 5 '14 at 16:57
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