I know I’ve probably used this term a bunch in other blog posts but I don’t think I’ve ever explained what a method signature is.<\/p>\n\n\n\n
In Xojo a “method signature” is the unique way Xojo identifies each method so it can know which method you are calling in your code.<\/p>\n\n\n\n
So what does that include ?<\/p>\n\n\n\n
First off it does NOT include the SCOPE. PRIVATE, PUBLIC, GLOBAL, and PROTECTED are scope modifiers – but they are not part of the signature of a method.<\/p>\n\n\n\n
Attributes are also not part of the signature.<\/p>\n\n\n\n
And, curiously enough, the return type is NOT part of the signature. While that determines where you can use the method (ie in an expression where a value is expected vs not) it is NOT part of the signature.<\/p>\n\n\n\n
The signature includes only the name and parameter list.<\/p>\n\n\n\n
It gets a LOT more confusing if your parameter lists have optional or default parameter values since the signature basically can be thought to be “variable” – but its still just the name and parameter list.<\/p>\n\n\n\n
And if you ever get an error saying <\/p>\n\n\n\n
There is more than one item with this name and it’s not clear to which this refers.<\/em><\/p>\n\n\n\n and the compiler has hilighted a method call then the likelihood is you have two signatures that can be treated the same and the compiler cannot figure out which one you really meant to use.<\/p>\n\n\n\n <\/p>\n","protected":false},"excerpt":{"rendered":" I know I’ve probably used this term a bunch in other blog posts but I don’t think I’ve ever explained what a method signature is. In Xojo a “method signature” is the unique way Xojo identifies each method so it can know which method you are calling in your code. So what does that include … <\/p>\n