Questions tagged [class-eval]
41 questions
0
votes
2 answers
How to install classeval in python? UnicodeDecode Error in classeval installation
I receive an UnicodeDecode error when I try to install classeval (idk if important, but actually i received this error while trying to install hgboost).
Here it is:
pip install classeval
output:
PS C:\Users\username> pip install classeval
…
o.d.rinani
- 23
- 8
0
votes
2 answers
How to temporarily redefine a method in Ruby?
Say, I have:
class Test
def initialize(m)
@m = m
end
def test
@m
end
end
How can I temporarily make method #test of all instances (both existing and new ones) of Test return 113, and then restore the original method later?
It…
Bo Yi
- 123
- 1
- 9
0
votes
1 answer
How to use Class in variable?
I want to convert fetched data as below, but I got error and emulator shutdown!
What can I do?
Map responseClassMap = {
'$ResponseCompany': ResponseCompany,//ResponseCompany is class
'$ResponseCompanyDetail': ResponseCompanyDetail,…
mikezang
- 2,291
- 7
- 32
- 56
0
votes
1 answer
How does this ruby custom accessor work
So the method below in class_eval dynamically creates accessors for attributes defined at runtime. It can be used, for example, to create configuration objects with attributes read from a config file (and unknown until runtime). I understanding…
ennuikiller
- 46,381
- 14
- 112
- 137
0
votes
0 answers
Rails Spree Extension doesn't show instance in view
The default Spree Commerce has "Categories" and "Brand" taxonomies. I have generated an extension that creates a custom testing page where the taxonomies are displayed, but in reverse order. This is only for practicing purposes.
The custom testing…
Ricardo Castañeda
- 5,746
- 6
- 28
- 41
0
votes
1 answer
Explicit use of `self` in method name in class definition
This code is from the Rails Crash Course book:
class Accessor
def self.accessor(attr)
class_eval "
def #{attr}
@#{attr}
end
def #{attr}=(val)
@#{attr} = val
end
"
end
end
The idea is that a…
malfunctioning
- 435
- 1
- 3
- 10
0
votes
2 answers
Circular dependency when trying to reopen an engine class?
I am trying to re-open a class in Rails that comes from an engine. I did the following:
module Xaaron
ApiKey.class_eval do
include Promiscuous::Publisher
publish :xaaron_users_id, :api_key, :as => :ApiKey
end
end
which sits in:
…
user3379926
- 3,855
- 6
- 24
- 42
0
votes
1 answer
Unexpected end of input?
in the following code I am running into an error which states syntax error, unexpected '\n', expecting :: or '[' or '.' (SyntaxError) But I don't see where the issue is.
module Xaaron
class ApiKey.class_eval # It does not like this....
…
user3379926
- 3,855
- 6
- 24
- 42
0
votes
1 answer
Dynamic methods using define_method and eval
I've put together two sample classes implemented in a couple of different ways which pretty well mirrors what I want to do in my Rails model. My concern is that I don't know what, if any are the concerns of using either method. And I've only found…
MCB
- 2,021
- 1
- 18
- 32
0
votes
1 answer
Define instance method of a class after class already defined in ruby
I have some problem with extending class with instance method after separate module is included into separate class
module ActsAsCommentable
def self.included(commentable)
Thread.class_eval do
def commentable
p "disqusable is…
sandric
- 2,310
- 3
- 21
- 26
0
votes
3 answers
Class eval passing the class varibale by reference
The following code snippet:
class A
end
@class = eval("A")
@class.class_eval do
@@attr = 100
def self.get_attr
@@attr
end
def self.set_attr(_x)
@@attr = _x
end
end
…
user2231847
- 11
- 2