Optional Output Parameters
105259
C# 4.0 optional out/ref arguments
19866
Is there a way to provide named parameters in a function call in JavaScript?
101561
Passing an empty array as default value of an optional parameter
15867
] inside an optional argument
134208
Is there a way to condition output on a given date?
105643
Powershell Parameters
139143
How to specify optional arguments that take functional values
122690
Constructing functions with variable number of output arguments
79210
Stored Procedure with optional "WHERE" parameters
109300
Handle either a list or single integer as an argument
131923
Optional parameters on delegates doesn't work properly
136606
Default value of function parameter
99775
Deriving input based on other parameters in Python script tool?
72949
Standard no-op output stream
29535
Use parameter expansion to modify output of another expansion
70189
Conditional compilation in Python
4709
Functions with Options