xmisao

def define_keyword_arguments_method(method_name, *keywords)
  instance_eval <<RUBY
  define_method(:#{method_name}){|#{keywords.map{|kw| kw + ':'}.join(', ')}|
    yield #{keywords.map{|kw| "#{kw}: #{kw}"}.join(', ')}
  }
RUBY
end

define_keyword_arguments_method(:my_method, 'arg1', 'arg2', 'arg3') do |**kwargs|
  p kwargs

xmisao

CommandType     Name                                               Version    Source                                                                          
-----------     ----                                               -------    ------                                                                          
Cmdlet          Add-Content                                        3.1.0.0    Microsoft.PowerShell.Management                                                 
Cmdlet          Add-History                                        3.0.0.0    Microsoft.PowerShell.Core                                                       
Cmdlet          Add-Member                                         3.1.0.0    Microsoft.PowerShell.Utility                                                    
Cmdlet          Add-Type                                           3.1.0.0    Microsoft.PowerShell.Utility                                                    
Cmdlet          Clear-Content                                      3.

xmisao

#include<X11/Xlib.h>
#include<stdio.h>
#include<time.h>

typedef struct{
	int x, y;
} Pos;

Pos get_pos(Display *dpy, Window root){
		Window w;