I’m moving some code from Obj-C to Swift and, from time to time, I open a gap I
cannot see across. This is one, and I’d love some assistance.
I converted a pile of utility Obj-C code that included a class method of the
form on the rhs of:
xxx = [UIColor colorFromName:@"aliceblue"]
In the new Swift replacement of the utility code, I added a global constant
Dictionary of the form:
public let colorLookup = [
"aliceblue" : UIColor.init(colorLiteralRed:0.0, green:0.5, blue:1.0,
alpha:1.0),
…
]
and changed the Obj-C call to
xxx = colorLookup[@"aliceblue"]
The Obj-C compiler complains that the subscript is not numeric. It also
appears to not be able to resolve the global constant "colorLookup" (which
probably explains the error in the previous sentence). I notice that
"colorLookup" doesn’t appear in "Utilities-Swift.h" ..
There are other (and better) ways I could code this, but I’m curious why
"colorLookup" is invisible to Objective-C .. Thanks, Gavin
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