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Sorry for the potentially stupid question, I'm quite new to Ruby, and object orientation all together, however, I get
dby.rb:30:in <class:DBYConfig>': undefined methodparse' for DBY::DBYConfig:Class (NoMethodError)
from dby.rb:8:in <module:DBY>'
from dby.rb:6:in'
Here is the code:
https://gist.github.com/zackp30/6374d13ee1f88948c833
#parse is an instance method of the class DBYConfig, that's why you got error. Change DBY::DBYConfig.parse to DBY::DBYConfig.new.parse. Same explanation go to the method #init_conf, as with #parse . Thus change DBY::DBYConfig.init_conf, to DBY::DBYConfig.new.init_conf.
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I'm curios as to what this specific method is called:
public Word(String word) {
this._word = word;
}
Thanks in advance!
This is called a constructor. In this case, it would be for a Word object. It takes parameters to assign values to instance variables (in this case, the String word.)
Here is a link to the Oracle documentation on providing constructors in Java for further reference.
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Are there any objects in ruby that don't respond to to_s?
The question isn't meant to ask whether it is possible to create one, which I know can be done by undef_method. Feel free to explain details, including caveats of undefining.
The BasicObject class does not define a to_s method, so any instance of that class would not have a to_s method.
We should never specialize a subclass, since the subclass would not attend to the parent expectation anymore, have a look in the Liskov Substitution Principle.
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Using the Activity.Properties to send custom property info to the Bot. I can see that the values in the MessageController, once it passed to the dialgue then the Context.Activity doesnt contain Properties property. Any idea ?
https://docs.botframework.com/en-us/csharp/builder/sdkreference/dc/d2f/class_microsoft_1_1_bot_1_1_connector_1_1_activity.html#a0b5aff513cb633353c8f6766a214a4cb
Simply downcasting like below should solve this problem for you.
Activity a = (Activity) context.Activity;
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I need to replace a localized string to localized method.
From:
"social_1.localized()"
To:
"social_1".localized()
What is the best way to do?
May be this:
"social_1.localized()".gsub(".localized()","").localized()
or
my_string, my_method = "social_1.localized()".split('.')
my_method = my_method.gsub!("()",'').to_sym
my_string.send(my_method)
#uri-agassi (see comment) is right. using send this way may be a security risk. especially if it comes from user input (i.e. from the params object). you could think about to whitelist callable methods:
if [:upcase, :downcase, :capitalize].include?(my_method)
my_string.send(my_method)
end
Or at least ask the object, that it knowns the method to call:
my_string.send(my_method) if my_string.respond_to?(my_method)
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Is it possible to pass parameter to a method like this:
variable = my_method(:parameter)
No quotes, no nothing.Just -> :parameter .
Yes, you can pass a symbol to a method. Example:
puts('hello')
or
puts(:hello)