and used that function in my main. I get errors. Of course, I know that there are more template params for std::list (allocator I think). But, that is beside the point. Do I have to know the full template declaration of a template class to be able to forward declare it? ...

... range() and xrange() take a third parameter that specifies a step. So you can do the following. range(10, 0, -1) Which gives [10, 9, 8, 7, 6, 5, 4, 3, 2, 1] But for iteration, you should really be using xrange instead. So, xr...

... TRUE ~ NA_real_)) Added - arithmetic/na_if If the values are numeric and the conditions (except for the default value of NA at the end) are mutually exclusive, as is the case in the question, then we can use an arithmetic expression such that each term is multiplied by the desired result using...

...is used as a helper when you're searching for information within a column, and it maps to such with naming conventions. For instance, if you have a column named name in your database, you'd use the following syntax: Model.find_by(name: "Bob") .where is more of a catch all that lets you use a bit...

I'm building a RESTful API with Django and django-rest-framework . 9 Answers 9 ...

...ghtly more work. The two animations below show your "Overlapping Paws" and "Grouped Paws" example data. This method seems to be working perfectly. (And for whatever it's worth, this runs much more smoothly than the GIF images below on my machine, so the paw detection algorithm is fairly fast......

... (2018): The edited sibling answer by @xinyongCheng is a simpler approach, and should be the accepted answer. Your approach would be reasonable if you knew the bytes are in the platform's default charset. In your example, this is true because k.getBytes() returns the bytes in the platform's default...

... Actually you would have to compare both UPPER and LOWER variants because some characters have different representations in upper case but the same representation in lower case. For other characters, the opposite may be true. Java mentions the Georgian alphabet specifical...

...his approach is fine though when you're dealing with small-sized documents and/or don't update documents very often. Only store changes in a new version Another approach would be to store only the changed fields in a new version. Then you can 'flatten' your history to reconstruct any version of th...

...o quote: A class is free to implement comparison any way it chooses, and it can choose to make comparison against None mean something (which actually makes sense; if someone told you to implement the None object from scratch, how else would you get it to compare True against itself...