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XPath with multiple conditions

...hat XPath can I use to select any category with a name attribute specified and any child node author with the value specified. ...
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Bootstrap 3 panel header with buttons wrong position

I am using Bootstrap 3 and I would like to add some buttons in panel header, on top-right corner. When trying to add them, they are show below title baseline. ...
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Is Random class thread safe?

Is it valid to share one instance of the Random class between multiple threads? And to call nextInt(int) from multiple threads in particular? ...
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'size_t' vs 'container::size_type'

Is there is a difference between size_t and container::size_type ? 3 Answers 3 ...
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How to add footnotes to GitHub-flavoured Markdown?

... (Gosh darnit why can’t I make line breaks in comments.) [1] I.e. like Pandoc Mandoc footnotes minus the caret. – Guildenstern Nov 1 '16 at 20:09 ...
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After array_filter(), how can I reset the keys to go in numerical order starting at 0

...d array_filter to remove entries that had only the value '' from an array, and now I want to apply certain transformations on it depending on the placeholder starting from 0, but unfortunately it still retains the original index. I looked for a while and couldn't see anything, perhaps I just missed...
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Determine what attributes were changed in Rails after_save callback?

...hanged? are only useful before the model is saved, the way I'm currently (and unsuccessfully) trying to do so is as follows: ...
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Getting exact error type in from DbValidationException

...uation where I'm initializing my model in DatabaseInitializer() for EF 4.1 and get this annoying error "Validation failed for one or more entities. See 'EntityValidationErrors' property for more details." So, I go to this EntityValidationErrors and there is a field {System.Data.Entity.Validation....
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What is the lifetime of a static variable in a C++ function?

... is declared as static in a function's scope it is only initialized once and retains its value between function calls. What exactly is its lifetime? When do its constructor and destructor get called? ...
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Iterating through a JSON object

I am trying to iterate through a JSON object to import data, i.e. title and link. I can't seem to get to the content that is past the : . ...