[swift-evolution] #pragma

[Anton Zhilin]

AFAIK, if one would extend Swift beyond its "official" specification,
it could be done using #-directives and @-attributes, like Swift
playgrounds use #imageLiteral(...) and friends. It's somewhat equivalent to
pragmas of C++. On the other hand, things that are not understood by target
compiler, but are features of an IDE, are done using comments. Fair enough?
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