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How do you find out the type of an object (in Swift)?
When trying to understand a program, or in some corner-cases, it's useful to be able to actually find out what type something is. I know the debugger can show you some type information, and you can usually rely on type inference to get away with not specifying the type in those situations, but still...
Connecting overloaded signals and slots in Qt 5
I'm having trouble getting to grips with the new signal/slot syntax (using pointer to member function) in Qt 5, as described in New Signal Slot Syntax . I tried changing this:
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object==null or null==object?
I heard from somebody that null == object is better than object == null check
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Can regular expressions be used to match nested patterns? [duplicate]
Is it possible to write a regular expression that matches a nested pattern that occurs an unknown number of times? For example, can a regular expression match an opening and closing brace when there are an unknown number of open/close braces nested within the outer braces?
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How to match “anything up until this sequence of characters” in a regular expression?
Take this regular expression: /^[^abc]/ . This will match any single character at the beginning of a string, except a, b, or c.
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How to pick a new color for each plotted line within a figure in matplotlib?
I'd like to NOT specify a color for each plotted line, and have each line get a distinct color. But if I run:
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CSS: Change image src on img:hover
I need to change <img> source URL on hover .
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Python regular expressions return true/false
Using Python regular expressions how can you get a True / False returned? All Python returns is:
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Difference between \b and \B in regex
I am reading a book on regular expression and I came across this example for \b :
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How to reshape data from long to wide format
I'm having trouble rearranging the following data frame:
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