April 2018
Intermediate to advanced
264 pages
8h 24m
Polish
Content preview from Nowoczesne receptury w Javie
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Rozdział 2. Pakiet java.util.function
W poprzednim rozdziale omówiłem podstawowe wiadomości na temat składni wyrażeń lambda i referencji do metod. Jedna z najważniejszych zasad głosi, że zawsze musi być jakiś kontekst. Wyrażenia lambda i referencje do metod zawsze są powiązane z funkcyjnymi interfejsami, które dostarczają informacji na temat implementowanej pojedynczej abstrakcyjnej metody.
Podczas gdy w bibliotece standardowej Javy znajduje się wiele interfejsów zawierających tylko jedną abstrakcyjną metodę, a więc funkcyjnych, dodano jeszcze jeden nowy pakiet, który obejmuje tylko funkcyjne interfejsy wykorzystywane w wielu innych miejscach biblioteki. Ten pakiet nosi nazwę java.util.function.
Znajdujące się w pakiecie java.util.function
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