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Easiest way to toggle 2 classes in jQuery

If I have class .A and class .B and want to switch in between on button click, what's a nice solution for that in jQuery? I still don't understand how toggleClass() works. ...
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How to remove all callbacks from a Handler?

I have a Handler from my sub-Activity that was called by the main Activity . This Handler is used by sub-classes to postDelay some Runnables, and I can't manage them. Now, in the onStop event, I need to remove them before finishing the Activity (somehow I called finish() , but it still call ...
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What is a handle in C++?

I have been told that a handle is sort of a pointer, but not, and that it allows you to keep a reference to an object, rather than the object itself. What is a more elaborate explanation? ...
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How to get the number of Characters in a String?

How can I get the number of characters of a string in Go? 7 Answers 7 ...
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Read file data without saving it in Flask

I am writing my first flask application. I am dealing with file uploads, and basically what I want is to read the data/content of the uploaded file without saving it and then print it on the resulting page. Yes, I am assuming that the user uploads a text file always. ...
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Default parameter for CancellationToken

I have some async code that I would like to add a CancellationToken to. However, there are many implementations where this is not needed so I would like to have a default parameter - perhaps CancellationToken.None . However, ...
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How to force LINQ Sum() to return 0 while source collection is empty

Basically when I do the following query, if no leads were matched the following query throws an exception. In that case I'd prefer to have the sum equalize 0 rather than an exception being thrown. Would this be possible in the query itself - I mean rather than storing the query and checking query.A...
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SQL Server: Examples of PIVOTing String data

...some simple SQL Server PIVOT examples. Most of the examples that I have found involve counting or summing up numbers. I just want to pivot some string data. For example, I have a query returning the following. ...
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How do I globally configure RSpec to keep the '--color' and '--format specdoc' options turned on

How do I set global configuration for RSpec in Ubuntu. 6 Answers 6 ...
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Using awk to remove the Byte-order mark

How would an awk script (presumably a one-liner) for removing a BOM look like? 5 Answers ...