get all matching non null elements if all the conditions are given in predicate
126
How do I compare strings in Java?
121132
Conditional LINQ where statement?
123797
Not equal  != operator on NULL
19022
Get the first item from an iterable that matches a condition
118858
Is there any way to negate a Predicate?
3858
Implementing condition in XPath
81549
How would you do a "not in" query with LINQ?
42410
How do I dynamically construct a predicate method from an expression tree?
49616
Why does NOT IN with a set containing NULL always return FALSE/NULL?
120566
Compare two objects in Java with possible null values
27025
How do I choose an element from a non-empty set?
38241
How do I check for nulls in an '==' operator overload without infinite recursion?
157411
How to dynamically add OR operator to WHERE clause in LINQ
146928
Predicate Delegates in C#
23886
Matching a case when one element in a pair is Null
94839
Check whether a string is not null and not empty
78414
Wildcard search for LINQ