Why can't Swift infer base string with specific indexing string methods? -

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here's don't understand: swift soooo @ "inferring things" ... yet, syntax of strings, say: 

hello[hello.index(after: startindex)]

requires second hello! no "other string" makes sense! why can't language updated work this? 

hello[  .index(after: startindex) ]

there times when must retype base string name 3 or 4 times in single line of code!

you this

let red: uicolor = uicolor.red

that can written as

let red: uicolor = .red

however in case .red type property of uicolor.

.red belong uicolor type, not particolar instance.

that's why can omit uicolor in second snippet. because swift knows .red inside uicolor class.

let's example

here

hello.index(after: hello.startindex)

cannot become 

hello.index(after: .startindex)

because in case startindex not type property. it's property related specific value hello.


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