Questions tagged [private-methods]
285 questions
546
votes
34 answers
JavaScript private methods
To make a JavaScript class with a public method I'd do something like:
function Restaurant() {}
Restaurant.prototype.buy_food = function(){
// something here
}
Restaurant.prototype.use_restroom = function(){
// something here
}
That way…
Wayne Kao
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381
votes
11 answers
How do I use reflection to invoke a private method?
There are a group of private methods in my class, and I need to call one dynamically based on an input value. Both the invoking code and the target methods are in the same instance. The code looks like this:
MethodInfo dynMethod =…
Jeromy Irvine
- 11,614
- 3
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- 52
128
votes
8 answers
Unit testing of private methods in C++
I am in the process of writing some unit tests.
In particular I want to test some private methods.
So far the I have come up with using.
#define private public
But I am not happy with this as it will destroy all encapsulation from the point of view…
Mumbles
- 1,654
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123
votes
11 answers
Why is a public const method not called when the non-const one is private?
Consider this code:
struct A
{
void foo() const
{
std::cout << "const" << std::endl;
}
private:
void foo()
{
std::cout << "non - const" << std::endl;
}
};
int main()
{
A a;
…
Narek
- 38,779
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120
votes
10 answers
Private module methods in Ruby
I have a two part question
Best-Practice
I have an algorithm that performs some operation on a data structure using the public interface
It is currently a module with numerous static methods, all private except for the one public interface…
Daniel Beardsley
- 19,907
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69
votes
4 answers
Private Variables and Methods in Python
When should I use _foo (an underscore) or __bar (double underscore) for private members and methods in Python?
kurikintoki
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62
votes
10 answers
Overriding private methods in Java
As succinctly described here, overriding private methods in Java is invalid because a parent class's private methods are "automatically final, and hidden from the derived class". My question is largely academic.
How is it not a violation of…
Bill
- 1,407
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51
votes
2 answers
Function privacy and unit testing Haskell
How do you deal with function visibility and unit testing in Haskell?
If you export every function in a module so that the unit tests have access to them, you risk other people calling functions that should not be in the public API.
I thought of…
Ralph
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49
votes
8 answers
How can I test private members and methods of classes?
I am trying to do unit testing (using the Boost unit testing framework) on a C++ class called VariableImpl. Here are the details.
class Variable
{
public:
void UpdateStatistics (void) {
// compute mean based on m_val and update m_mean;
…
Jir
- 2,985
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49
votes
13 answers
Private method naming convention
Is there a convention for naming the private method that I have called "_Add" here? I am not a fan of the leading underscore but it is what one of my teammates suggests.
public Vector Add(Vector vector) {
// check vector for null, and compare…
jason
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29
votes
7 answers
Private Methods Over Public Methods
I was examining the StringTokenizer.java class and there were a few questions that came to mind.
I noticed that the public methods which are to be used by other classes invoked some private method which did all of the work. Now, I know that one of…
lbj-ub
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27
votes
2 answers
On a nonconst object, why won't C++ call the const version of a method with public-const and private-nonconst overloads?
class C
{
public:
void foo() const {}
private:
void foo() {}
};
int main()
{
C c;
c.foo();
}
MSVC 2013 doesn't like this:
> error C2248: 'C::foo' : cannot access private member declared in class 'C'
If I cast to a const reference,…
japreiss
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26
votes
2 answers
Should I test private methods using RSpec?
Is it good practice to write tests for private methods?
Consider the following simple example:
class Group
has_many :members
private
def release_members
members.each { |member| member.update_attributes group_id: nil }
end
end
Would it…
tyler.amos
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25
votes
8 answers
When/why to make function private in class?
When should i make a function private and why is it good idea?
Ramilol
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25
votes
7 answers
Is there any use for a class to contain only (by default) private members in c++?
Members of a class are by default private in c++.
Hence, I wonder whether there is any possible use of creating a class that has all its members (variables and functions) set by default to private.
In other words, does there exist any meaningful…
mr_T
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