Recent questions tagged metaprogramming

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metaprogramming - Find out whether a C++ object is callable

Is it possible to write a type trait, say is_callable<T> which tells if an object has an operator() defined? ... . I'm looking for a more general solution. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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403 views

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metaprogramming - Calling a Method From a String With the Method's Name in Ruby

How can I do what they are talking about here, but in Ruby? How would you do the function on an ... puts methods and load and row_change where not listed. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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575 views

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metaprogramming - Is it possible to implement dynamic getters/setters in JavaScript?

I am aware of how to create getters and setters for properties whose names one already knows, by doing ... like a solution that is cross-browser compatible. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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422 views

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metaprogramming - Programmatically create static arrays at compile time in C++

One can define a static array at compile time as follows: const std::size_t size = 5; unsigned int ... nonetheless a very interesting approach to the problem. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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547 views

1 answer

metaprogramming - Groovy - no signature of method after inserting a method

Well, I'm getting MissingMethodException even after inserting a method into a metaclass. It's strange that its ... 65866095/groovy-no-signature-of-method-after-inserting-a-method...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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362 views

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metaprogramming - In R, how to turn character to verbatim expression?

If I do this: parse(text="foo()") I get: expression(foo()) But what I really need is: foo() ... .com/questions/65640767/in-r-how-to-turn-character-to-verbatim-expression...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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473 views

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metaprogramming - Change the context/binding inside a block in ruby

I have a DSL in Ruby that works like so: desc 'list all todos' command :list do |c| c.desc 'show ... .com/questions/5851127/change-the-context-binding-inside-a-block-in-ruby...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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518 views

1 answer

metaprogramming - Change the context/binding inside a block in ruby

I have a DSL in Ruby that works like so: desc 'list all todos' command :list do |c| c.desc 'show ... .com/questions/5851127/change-the-context-binding-inside-a-block-in-ruby...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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443 views

1 answer

metaprogramming - Adding an instance variable to a class in Ruby

How can I add an instance variable to a defined class at (runtime), and later get and set its value from ... com/questions/151338/adding-an-instance-variable-to-a-class-in-ruby...