Swift extension

Question

Swift is growing very fast now a days as it has so many cool features for developers. one of the biggest cool feature is extension.

1. so adding a so

Answer 1

so adding a so many extension in the project cause any issue of slow compiling?

Only to the extent that your adding more source code to the project.

does it affect the application overall performance ?

No it does not effect the overall performance of the app as an extension is resolved at compile time, not runtime.