Original Answer (2016) As per the (now archived) TypeScript Language Specification: Unlike an interface declaration, which always introduces a named object type, a type alias declaration can introduce a name for any kind of type, including primitive, union, and intersection types. The specification goes on to mention: Interface types have many similarities to type aliases for object type literals, … Read more
This happens because you put bracket of return on the next line. That might be a common mistake if you write js without semicolons and use a style where you put opened braces on the next line. Interpreter thinks that you return undefined and doesn’t check your next line. That’s the return operator thing. Put your opened bracket on … Read more
Just replace return 0 by return 0, 0, or better: raise an error instead of returning 0 When your if condition is True, you only return 0. Then later, when you do agg, gps = get_grps(…), you tell python to unpack the result of the function. Then, python is expecting a 2-length iterable, and try to unpack it, but as it says: … Read more
When using “\t”, the escape sequence \t is replaced by Java with the character U+0009. When using “\\t”, the escape sequence \\ in \\t is replaced by Java with \, resulting in \t that is then interpreted by the regular expression parser as the character U+0009. So both notations will be interpreted correctly. It’s just the question when it is replaced with the corresponding character.
It’s a list of public objects of that module, as interpreted by import *. It overrides the default of hiding everything that begins with an underscore.
Remove the -it from your cli to make it non interactive and remove the TTY. If you don’t need either, e.g. running your command inside of a Jenkins or cron script, you should do this. Or you can change it to -i if you have input piped into the docker command that doesn’t come from a TTY. If you … Read more
It seems to me as though the installation has messed up somehow. Try running: This should reinstall everything from PyPi. This should solve the problem as I think running pip install “ipython[notebook]” messed things up.
C++ is usually considered a “multi-paradigm” language. That is, you can use it for object-oriented, procedural, and even functional programming. Those who would deny that C++ is OO generally have beef with the fact that the primitive types are not objects themselves. By this standard, Java would also not be considered OO. It is certainly … Read more
I found that in 123, \d matches 1 and 3 but not 2. I was wondering if \d matches a digit satisfying what kind of requirement? I am talking about Python style regex. Regular expression plugin in Gedit is using Python style regex. I created a text file with its content being Only 1 and 3 are matched by the regex \d; 2 is not. Generally for a sequence of digit numbers … Read more
If it is a function, it needs to return something. Otherwise, running it is kind of useless. So you probably need to say: You probably want to read more about functions in Python and when this would make sense (passing by reference, for example). This can be a good starting point: Python functions.