Challenges involved in implementing parts of the Swift compiler in Swift

[Austin_Conlon]

https://www.quora.com/What-are-the-challenges-involved-in-implementing-and-reimplementing-parts-of-the-Swift-compiler-in-Swift/answer/Brent-Royal-Gordon?__filter__=all&__nsrc__=1&__sncid__=3483602311&__snid3__=5708823833&share=1