This question already has answers here:
Closed 11 years ago.
Possible Duplicate:
Get list of a class' methods
Suppose I haven't any reference on hand, and I want to see all the methods in the built-in File class, is that simply available?
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answered in Get list of a class' instance methods
Sure, try:
File.methods
And if you have the awesome_print gem installed then it formats the list nicely and provides extra information.
Related
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Is there a way other than traits to add methods to a type I don't own?
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How can I wrap another type and add fields and methods to it?
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How to print a Vec?
(7 answers)
Closed 2 years ago.
I have some struct Animal. I want to implement some methods on Vec<Animal>. I believe the correct way to do this is to create a new wrapper object called Animals. What is the correct object to make this wrapper, though? A struct? An enum? Something else?
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Difference between http.Handle and http.HandleFunc?
(4 answers)
Closed 5 years ago.
I'm trying to understand the differences between Handle and HandleFunc.
Other than the differences, when would you use one over the other when building a Go web app?
https://golang.org/pkg/net/http/#Handle
You'd use whichever one fits your handler implementation. If you've implemented your handler as a function, you'd use HandleFunc; if you've implemented it as a type with a ServeHTTP method, you'd use Handle.
This question already has answers here:
What is the usefulness of `enable_shared_from_this`?
(6 answers)
Closed 5 years ago.
What is the point for a class T to inherit from std::enable_shared_from_this<T> ? I can't seem to figure out why you wouldn't just create a std::shared_ptr<this> ?
Cppreference has a good example on why.
If you want to return a std::shared_ptr of this while *this is already owned by a std::shared_ptr and you don't return shared_from_this() but return a new std::shared_ptr<T>(this) instead then you will end up with 2 shared pointers that don't know they're both owning the same object and thus the use_count() will be wrong which will cause a double delete, which is undefined behavior.
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How to make instance variables private in Ruby?
(7 answers)
Closed 8 years ago.
Are instance variables private? I hear both claims that they are private and that they do not have access specifier [sic] though they behave as private. Can instance variables be made private?
There is a limited amount of 'privateness' granted to ruby instance variables, you can always access them from the outside through e.g. instance_variable_get (a public method) as outlined in this question. So depending on your desired level of 'privateness' the answer would be "they are private", "they are protected" or "they cannot be really private"
This question already has answers here:
Closed 12 years ago.
Possible Duplicate:
How do I find gems that depend on a given gem?
I want to find out which gems depend on e.g. one of my gems, so i can see if i would break anything, is this supported/possible ?
gem-dependent tells you...