python value versus reference
66350
Weird closure behavior in python
92485
JavaScript by reference vs. by value
85919
What is the difference between a reference type and value type in c#?
79050
Python ( or general programming ). Why use  instead of != and are there risks?
5165
What are the differences between a pointer variable and a reference variable in C++?
125400
copy object as a reference
124
Is JavaScript a pass-by-reference or pass-by-value language?
75941
Initialization of instance fields vs. local variables
37883
Java String variable setting - reference or value?
45188
How do I pass a variable by reference?
149735
Are objects in PHP passed by value or reference?
146466
Is a variable the name, the value, or the memory location?
137541
class variable vs instance variable --Python
100409
When to use an object instance variable versus passing an argument to the method
65580
Difference between pointer and reference as thread parameter
2865
What's the difference between assignment operator and copy constructor?
112198
Global Variables vs. Local Variables