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i was wondering, because i have a method with multiple default parameters
private string reqLabel(string label, byte fontSize = 10, string fontColour = "#000000", string fontFamily = "Verdana" )
{
return "<br /><strong><span style=\"font-family: " + fontFamily + ",sans-serif; font-size:" +fontSize.ToString() + "px; color:"+ fontColour + "; \">" + label +" : </span></strong>";
}
and when i call the method it i have to do it in order
reqLabel("prerequitie(s)")
reqLabel("prerequitie(s)", 12)
reqLabel("prerequitie(s)", 12 , "blue")
reqLabel("prerequitie(s)", 12 , "blue", "Tahoma")
so my question is, is there any way to skip the first few default parameters?
Let's say i want to input only the colour, and the font-family like this:
reqLabel("Prerequisite(s)" , "blue" , "Tahoma")
/* or the same with 2 comma's where the size param is supposed to be. */
reqLabel("Prerequisite(s)" , , "blue" , "Tahoma")
801
There are several ways to simulate default parameters in Java: Method overloading. void foo(String a, Integer b) { //... } void foo(String a) { foo(a, 0); // here, 0 is a default value for b } foo("a", 2); foo("a");
Short answer: No. Fortunately, you can simulate them. Many programming languages like C++ or modern JavaScript have a simple option to call a function without providing values for its arguments.
Parameters are essential to functions, because otherwise you can't give the function-machine an input.
Default parameters allow us to initialize functions with default values. A default is used when an argument is either omitted or undefined — meaning null is a valid value. A default parameter can be anything from a number to another function.
Yes, it is possible with explicit naming:
reqLabel("Prerequisite(s)" , fontColour: "blue", fontFamily: "Tahoma")
Just note that named arguments should always be the last ones - you cannot specify positioned arguments after named. In other words, this is not allowed:
reqLabel("Prerequisite(s)" , fontColour: "blue", "Tahoma")
Use named arguments
reqLabel("prerequitie(s)", fontSize: 11)
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