Guide To Java Optional | Baeldung
Guide To Java Optional | Baeldung
Dec 8, 2016
baeldung.com
The use of null values in a map is problematic, as there is then no way to differentiate whether a null value returned by the call get( k ) represents the legitimate value of an entry (k, null ), or designates that key k was not found. The java.util. Map interface includes a boolean method, containsKey (k), that resolves any such ambiguity. Implement such a method for the Unsorted TableMap class. | Numerade
The use of null values in a map is problematic, as there is then no w…
Jun 17, 2020
numerade.com
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