Alternative of "??" for non nullable types (e.g. when looking up dictionary keys)
130563
Is there an IDictionary implementation that, on missing key, returns the default value instead of throwing?
31537
Checking for null before event dispatching... thread safe?
26674
Is there any way other than instanceof operator for object type comparison in java?
72088
Why shouldn't we allow NULLs?
89055
Possible to use ?? (the coalesce operator) with DBNull?
5377
Is there a standard function to check for null, undefined, or blank variables in JavaScript?
33913
How can you use optional parameters in C#?
145384
What's the difference between 'int?' and 'int' in C#?
68876
Conditional operator assignment with Nullable types?
120566
Compare two objects in Java with possible null values
75212
How to get the first non-null value in Java?
93305
Nullable type as a generic parameter possible?
137403
How to best implement Equals for custom types?
124471
Comparing nullable column values using "IS NULL" versus "= NULL"
38789
can we check if a key exists in a map in vf page
93804
How to check for a Null value in VB.NET
86344
Compare nullable types in Linq to Sql