class-variables

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In Ruby, why after starting irb, foo.nil? says undefined error, and @foo.nil? gives "true", and @@wah.nil? gives error again?

Same in Ruby 1.8.7 and 1.9.2: $ irb ruby-1.8.7-p302 > foo.nil? NameError: undefined local variable or method `foo\' for #<Object:0x3794c>[详细]

2023-01-22 12:44 分类：问答
storing passwords in class variables in python

I\'m working on a python script that stores ssh passwords only during the current session. What I\'m doing is declaring a class variable credentials = {}. 开发者_开发问答When the script needs access t[详细]

2023-01-16 07:18 分类：问答
attr_accessor for class question

I thought it was possible to define attr_accessor methods in a eigenclass like this: class IOS @@module开发者_Go百科s_paths = \"hello\"[详细]

2023-01-15 14:37 分类：问答
python subclass access to class variable of parent

I was surprised to to learn that a class variable of a subclass can\'t access a class variable of the parent without specifically indicating the class name of the parent:[详细]

2023-01-15 03:04 分类：问答
Pass a class variable to another class

I\'d like to pass a class variable to another class and make it a class variable of that class. How would I do this in the following context?[详细]

2023-01-06 22:01 分类：问答
Setting a variable in a class function, where can I use that variable

If I have a class (like below) and in a function I set a variable (below:$this->example) but I havent declared the variable at the top of the class (e.g var $example;) where and how can I use开发者_高[详细]

2023-01-04 19:07 分类：问答
Setting new class variables inside a module

I have a plugin I have been working on that adds publishing to ActiveRecord classes.I extend my classes with my publisher like so:[详细]

2023-01-01 13:30 分类：问答
Python OOP and lists

I\'m new to Python and it\'s OOP stuff and can\'t get it to work. Here\'s my code: class Tree: root = None;[详细]

2023-01-01 01:11 分类：问答
Python Class Variables Question

I have some doubt about python\'s class variables. As my understanding, if I define a class variable, which is declared outside the __init__() function, this variable will create only once as a static[详细]

2022-12-30 16:31 分类：问答
C++ : Initializing base class constant static variable with different value in derived class?

I have a base class A with a constant static variable a. 开发者_运维问答I need that instances of class B have a different value for the static variable a. How could this be achieved, preferably with s[详细]

2022-12-28 03:29 分类：问答