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Determine if map contains a value for a key?

What is the best way to determine if a STL map contains a value for a given key? 10 Answers ...
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Draw Circle using css alone [duplicate]

Is it possible to draw circle using css only which can work on most of the browsers (IE,Mozilla,Safari) ? 7 Answers ...
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How do I concatenate two lists in Python?

How do I concatenate two lists in Python? 24 Answers 24 ...
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Replace duplicate spaces with a single space in T-SQL

I need to ensure that a given field does not have more than one space (I am not concerned about all white space, just space) between characters. ...
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Multiprocessing vs Threading Python [duplicate]

I am trying to understand the advantages of multiprocessing over threading . I know that multiprocessing gets around the Global Interpreter Lock, but what other advantages are there, and can threading not do the same thing? ...
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How do I concatenate multiple C++ strings on one line?

C# has a syntax feature where you can concatenate many data types together on 1 line. 24 Answers ...
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Does Spring @Transactional attribute work on a private method?

If I have a @Transactional -annotation on a private method in a Spring bean, does the annotation have any effect? 8 Answe...
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How can I use pickle to save a dict?

I have looked through the information that the Python docs give, but I'm still a little confused. Could somebody post sample code that would write a new file then use pickle to dump a dictionary into it? ...
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How is the “greater than” or “>” character used in CSS?

I have seen this character a number of times in CSS files but I have no idea how its used. Can anyone explain it to me and show how they are useful in making a page style easier? ...
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Iterate an iterator by chunks (of n) in Python? [duplicate]

Can you think of a nice way (maybe with itertools) to split an iterator into chunks of given size? 9 Answers ...