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![КОРОТКО ОБО ВСЕМ
{# LANGUAGE ForeignFunctionsInterface #}
foreign import ccall [safe|unsafe]
"header.h function...](https://image.slidesharecdn.com/haskellffiwithfun-160908150843/75/FFI-Haskell-3-2048.jpg?cb=1669678866)
![БЕЗОПАСНОСТЬ ВЫЗОВОВ
foreign import ccall [safe|unsafe] "header.h functionname" c_function :: type
Безопасный вызов (safe...](https://image.slidesharecdn.com/haskellffiwithfun-160908150843/75/FFI-Haskell-5-2048.jpg?cb=1669678866)
![Типы передаваемые в Ptr
"Прикрепленные" (pinned):
[+] Можно напрямую передавать во внешний
код(*)
[-] Не перемещаются GC —...](https://image.slidesharecdn.com/haskellffiwithfun-160908150843/75/FFI-Haskell-10-2048.jpg?cb=1669678866)
![ЗАЧЕМ ЭТО НУЖНО?
[-] микроптимизации
[+] атомарные инструкции (lock-free алгоритмы)
[+] низкоуровневое взаимодействие с ru...](https://image.slidesharecdn.com/haskellffiwithfun-160908150843/75/FFI-Haskell-31-2048.jpg?cb=1669678866)
