Error : Only variables should be passed by reference
2112
Strict warning: Only variables should be passed by reference
147251
How do I fix the error where I cannot make a static reference to a non-static input field?
26849
'pass parameter by reference' in Ruby?
114816
Is null reference possible?
60938
How to dynamically create a local variable?
45905
Java Error - Illegal Modifier for Parameter - Only final Permitted
41710
How can I refer to a variable using a string containing its name?
44960
Are global variables bad?
27212
Variables might not have been initialized
1605
What is the reason behind "non-static method cannot be referenced from a static context"?
129581
Does C++ pass objects by value or reference?
121471
Reference type still needs pass by ref?
71634
Can a variable be defined only in the scope of an if-statement, similar to how it's often done for for-loops?
92485
JavaScript by reference vs. by value
2701
Assigning to variable from parent function: "Local variable referenced before assignment"
98908
Is it good practice to set variables to null when they are no longer needed?
57
Why is my variable unaltered after I modify it inside of a function? - Asynchronous code reference