That means returning a (pointer - or even better, reference to an) empty array or list instead of null, or returning an empty string ("") instead of null, or even the string "0" (or something …

Feb 14, 2012 · Null data may mean "not yet provided", and a program will wait a while before checking the value again. Data may not be able to have a null value. It may be interpreted …

Mar 8, 2017 · So, if the code that produces request/response doesn't use null, my guess is the code on the other side of the API won't be forced to use null too. I rather like the idea of using …

Feb 3, 2019 · null, however, means that you got the name right, and that the code that was supposed to put a value in there did put a value - but that value legitimately means "there is …

Jan 4, 2012 · So a literal 0, when used in a context that requires an expression of pointer type, always evaluates to a null pointer, i.e., a unique pointer value that points to no object. That …

I think NULL does not mean that there is no email address, i think it means that the email address is currently not known, not known to exist, or is impossible to fill in for other reasons. …

The only case where I see any debate is when you're returning a single item. I find myself preferring to return null in case of failure in such a situation on the basis of making things fail …

Feb 24, 2016 · To me, 0 means null. 0 is brief and easy to read and can be used anywhere you see NULL or nullptr in C and C++. In languages like Javascript, the null type is something else …

Jan 4, 2013 · A null-terminated string is a sequence of characters with a trailing 0-valued character. So a string like "Hi" is represented as the sequence {72, 105, 0} (ASCII). The 0 is a …

Jul 8, 2018 · In SQL, however, NULL means "the absence of a value." However, this is a legitimate "setting" for the field to have. It is an explicit assertion that no value exists for this …