metaprogramming
Passing variables to config/environments/demo.rb from the Rails app
I have been struggling with a problem for the past days in a Ruby on Rails App I\'m currently working on. I have different countries and for each country we use different Amazon S3 buckets. Amazon S3[详细]
2023-04-10 01:16 分类：问答how to eval / constantize a string to a method, then pass arguments to it
Given: s = \"foo_bar_path\" How can I eval or constantize s, and pass arguments to it, such as my final result would be the equivalent of:[详细]
2023-04-09 19:56 分类：问答Associative Container as Function Template Parameter
I would like to know how I would write a function that can 开发者_运维知识库accept as a parameter an associative container that itself accepts two or more template parameters. For example, if I want t[详细]
2023-04-09 18:14 分类：问答Can not use template argument in function declaration
I\'m struggling to find a good reason why the following code does not compile. It gives me the following error.[详细]
2023-04-08 20:08 分类：问答Get included method names
How I can get all instance method names in the baz method call, which are only present in the Bar module (without other instance methods of this class) ?[详细]
2023-04-08 06:39 分类：问答Can I dynamically define a Ruby method that takes a block?
I know that I can dynamically define methods on a class using define_method, and that I specify the parameters this method take开发者_高级运维s using the arity of the block.[详细]
2023-04-08 02:04 分类：问答Removing/undefining a class method that's included by another module
I\'开发者_如何转开发d like to remove a class method that gets added to my class via the include function. For example:[详细]
2023-04-07 18:25 分类：问答Generalized chaining of non-member functions in C++
I don\'t know if this can even be achivieable, but given these set of functions\\class: float plus1(float x) { return x+1; }[详细]
2023-04-06 23:28 分类：问答Is C++ preprocessor metaprogramming Turing-complete?
I know C++ template metaprogramming is Turing-complete. Does the s开发者_如何转开发ame thing hold for preprocessor metaprogramming?Well macros don\'t directly expand recursively, but there are ways we[详细]
2023-04-06 19:00 分类：问答Ruby - remove_const :File
What is this piece of code doing? class Object r开发者_JAVA技巧emove_const :File end Is it completely deleting[1] the class? When I call File.instance_methods after that piece of code, it\'s just s[详细]
2023-04-06 12:09 分类：问答
![Interactive visualization of a graph in python [closed]](https://www.devze.com/res/2023/04-10/09/92d32fe8c0d22fb96bd6f6e8b7d1f457.gif)
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