F＃中的CGRect-未定义

Question

What is the equivalent of CGRect in F# : https://developer.xamarin.com/api/type/CoreGraphics.CGRect/

In C# we do:

new CGRect(50, 0, 200, 100)

but this is undefined in F# ...I also tried CGRectMake which was the old syntax, but that doesn't work either. I made sure that I imported CoreGraphics , and also tried CoreGraphics.CGRect .

Answer 1

Your documentation says CGRect constructors take floating point numbers, so try this - assuming you indeed have all the open statements in place:

CGRect(50.0, 0.0, 200.0, 100.0)

F# doesn't do implicit conversions of numeric types, you need to use the correct literal for the numeric type you want to use.