Feb 16, 2019 · null! is used to assign null to non-nullable variables, which is a way of promising that the variable won't be null when it is actually used. I'd use null! in a Visual Studio …

Oct 9, 2014 · Which is why you can only use IS NULL/IS NOT NULL as predicates for such situations. This behavior is not specific to SQL Server. All standards-compliant SQL dialects …

Apr 29, 2009 · The surprise expressed by JavaScript developers at typeof null === "object" is the result of an impedance mismatch (or abstraction leak) between a weakly-typed language …

A constant expression of type int with the value 0, or an expression of this type, cast to type void * is a null pointer constant, which if converted to a pointer becomes a null pointer. It is …

Mar 6, 2012 · The reasoning is that a null means "unknown", so the result of any comparison to a null is also "unknown". So you'll get no hit on rows by coding where my_column = null. SQL …

Apr 11, 2011 · That is one interpretaion of NULL. In certain contexts, it is clearly the correct one. But SQL is not consistent when it comes to NULL, so there are contexts where NULL means …

In the statement result we have a column that has all NULL values. We can refer to that column using alias. In your case the query selects all records from table, and each result record has …

"null means that the String Object was not instantiated" - thank you! that helps me to understand things a lot. i was able to use an if statement on a MediaPlayer object once, and it worked to …

Strict equality checks (===) should be used in favor of ==. The only exception is when checking for undefined and null by way of null. // Check for both undefined and null values, for some …

Null termination of strings is just a value zero, often referred to either as nul (one L) or '\0' (an octal escape sequence), just to separate it from null pointers and NULL. Dereferencing Having …