instance-methods Questions
4
Solved
From 3. Data model:
Instance methods
An instance method object combines a class, a class instance and any
callable object (normally a user-defined function).
If it is a definition, what does it me...
Sox asked 15/9, 2017 at 1:47
2
Solved
While I understand the $this variable is not available when a method is called in a static context, to assist in decoupling my application components from one-another I figured it would make sense ...
Remedial asked 18/6, 2011 at 20:20
2
Solved
module Country
def location
puts "location"
end
def self.included(base)
def cities
puts "cities"
end
end
def self.extended(base)
def animals
puts "animals"
end
end
end
class Test
i...
Woolf asked 7/5, 2020 at 23:57
4
Solved
is it possible to call @selector methods from another class ?
for example i make a method "bannerTapped:" and call it from "myViewController.m" class.
myviewcontroller.m :
anotherClass *ac= [[ano...
Beautify asked 13/2, 2014 at 15:19
5
Solved
I would like to add an attribute to an instance method in one of my classes. I tried the answer given in this question, but this answer only works for functions -- as far as I can tell.
As an exam...
Perdition asked 1/3, 2012 at 20:17
18
Solved
What's the difference between a class method and an instance method?
Are instance methods the accessors (getters and setters) while class methods are pretty much everything else?
Nice asked 27/6, 2009 at 20:48
3
Solved
I am trying to do something similar to this:
def foo(mode= :serial)
if (mode == :serial) then
self.send(:bar, "one_type")
else
self.send(:bar,"second_type",:T5)
end
end
I can obviously ty...
Hogarth asked 11/1, 2017 at 8:5
5
Solved
Is there a way to make len() work with instance methods without modifying the class?
Example of my problem:
>>> class A(object):
... pass
...
>>> a = A()
>>> a.__len__ ...
Guntar asked 11/4, 2016 at 19:1
4
Solved
Quite new to this so I hope I have the terminology in the title right.
I am trying to figure out how to create an instance method that will do the following:
--An ID number is returned.
--As eac...
Hamel asked 17/2, 2016 at 15:58
2
I would like to know if I could force this to happen
class A
def bomb ; "bomb" ; end
end
class B ; end
bomb = A.instance_method(:bomb)
b = B.new
bomb.bind(b)
currently it throws the error Ty...
Gaw asked 5/11, 2012 at 14:37
4
Solved
I'm a little bit confused about the different ways to use methods to interact with objects in C#, particularly the major design differences and consequences between the following:
Invoking ...
Ostiole asked 29/5, 2015 at 18:24
3
Solved
I am new to C# and I'm having a little problem with calling a function from the Main() method.
class Program
{
static void Main(string[] args)
{
test();
}
public void test()
{
MethodInfo m...
Bernardobernarr asked 10/4, 2014 at 19:38
3
Solved
In what sort of situation is the code:
module M
extend self
def greet
puts "hello"
end
end
more beneficial to use over say something like:
module M
def self.greet
puts "hello"
end
end
...
Bakeman asked 28/7, 2010 at 22:24
3
Solved
Anyone know what is wrong with this code?
def paginated_instance_method(default_page_size=25):
def wrap(func):
@functools.wraps(func)
def inner(self, page=1, page_size=default_page_size, *args,...
Banana asked 26/2, 2013 at 20:16
2
Solved
When sending mail in Rails, usually one would do something like this:
UserMailer.password_reset(user).deliver
But if we look inside UserMailer we can see this:
def password_reset(user) # not se...
Celerity asked 13/6, 2013 at 13:41
5
Solved
If I call a method on a rails active model method like so:
class Foo < ActiveRecord::Base
end
Foo.first
I'll get back the first active record. I don't have to instantiate the class.
But if...
Loraineloralee asked 25/10, 2012 at 11:43
3
Solved
I have a class that contains this class method:
def self.get_event_record(row, participant)
event = Event.where(
:participant_id => participant.id,
:event_type_code => row[:event_type],
...
Ernestoernestus asked 28/6, 2012 at 13:3
4
Solved
Can I define a Python method to be both static and instance at the same time? Something like:
class C(object):
@staticmethod
def a(self, arg1):
if self:
blah
blah
So that I can call i...
Mastigophoran asked 5/5, 2011 at 4:17
4
Solved
I'd like to be able to do this:
class A(object):
@staticandinstancemethod
def B(self=None, x, y):
print self is None and "static" or "instance"
A.B(1,2)
A().B(1,2)
This seems like a problem ...
Hardison asked 28/4, 2011 at 1:17
2
Solved
This question is similar to Why are methods in Ruby documentation preceded by a hash sign?
I understand why in Ruby instance methods are proceeded with a pound sign, helping to differentiate talki...
Veradia asked 6/4, 2010 at 20:7
1
Solved
Is it ever acceptable for a DTO to have instance methods which return derived values based on the DTO's data? Or should DTOs be pure data containers with no additional methods (other than getters/s...
Laura asked 12/2, 2010 at 22:2
5
Solved
Let's say I have this program:
class Foo {
public:
unsigned int bar () {
static unsigned int counter = 0;
return counter++;
}
};
int main ()
{
Foo a;
Foo b;
}
(Of course this example mak...
Placencia asked 29/1, 2010 at 18:11
3
Solved
class << self
attr_accessor :n, :totalX, :totalY
end
The syntax above is used for defining class instance variables. But when I think about what syntax implies, it doesn't make any sense to...
Isaiasisak asked 22/5, 2009 at 5:30
1
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