As is, it does absolutely nothing. It is a type annotation for the main function that simply states that this function returns None. Type annotations were introduced in Python 3.5 and are specified in PEP 484. Annotations for the return value of a function use the symbol -> followed by a type. It is completely optional and if you removed it, nothing would change. This will have absolutely no ...
The advantage of def file is that, it helps you to maintain the backword compatibility with the already realsed dlls. i.e it maintains the ordinal numbers for apis. Suppose you add a new api in the dll, then the linker looks at your .def file genearate the ordinal number for the ne wapi such that the ordinal numbers for the old apis are intact.
while googling, I find that "def" is used in python and groovy language. But, I am using java. So, how come it is possible to use keywords like "def" in java class? Is it possible to use other programming languages keywords in java? Please let me know in comment section, if you need any information from my end. Any help would be appreciated.
How do I create or use a global variable inside a function? How do I use a global variable that was defined in one function inside other functions? Failing to use the global keyword where appropri...
def can be used to define a method, and this is fastest option. @A.Karimi For fun: on 2.12, even eq even. @animageofmine Scala compiler can try to inline methods. There is @inline attribute for this. But it can't inline functions because function call is a call to virtual apply method of a function object.
I would like to return two values from a function in two separate variables. What would you expect it to look like on the calling end? You can't write a = select_choice(); b = select_choice() because that would call the function twice. Values aren't returned "in variables"; that's not how Python works. A function returns values (objects). A variable is just a name for a value in a given ...
Variables inside def main are local, while those outside it are global. This may introduce a few bugs and unexpected behaviors. But, you are not required to write a main() function and call it inside an if statement. I myself usually start writing small throwaway scripts without any kind of function.
def add(x,y): return x+ y # calling this will require only x and y add(2,3) # 5 If we want to add as many arguments as we may want, we shall just use *args which shall be a list of more arguments than the number of formal arguments that you previously defined (x and y).
