When defining class method, why there an equals sign in argument e.g. func(foo=3)
3494
What does ** (double star/asterisk) and * (star/asterisk) do for parameters?
103050
What do  mean such as implements Comparable?
156145
Should we always override equals?
24637
Why can't two methods be declared with the same signature even though their return types are different?
118541
How to pass a default argument value of an instance member to a method?
159014
What is the difference between 'E', 'T', and '?' for Java generics?
85451
What is the rule for parenthesis in Scala method invocation?
47676
What does "var FOO = FOO || {}" (assign a variable or an empty object to that variable) mean in Javascript?
19592
What does ||= (or-equals) mean in Ruby?
80539
Why would you use Expression> rather than Func?
133055
Why do I need to override the equals and hashCode methods in Java?
51739
Why can in-class initializers only use = or {}?
127473
And difference between FirstOrDefault(func) & Where(func).FirstOrDefault()?
19121
How does the String class override the + operator?
72817
What do the "+n" values mean at the end of a method name in a stack trace?
3941
What's the difference between ".equals" and "=="?
47957
Class method differences in Python: bound, unbound and static