built-in method
ask_question/5
Description
ask_question(Question, Kind, Component, Check, Answer)
Built-in method for asking a question represented by a term,
Question, which is converted to the question text using the
logtalk::message_tokens(Question, Component)
hook predicate. This method is declared in the logtalk built-in
object as a public predicate. The default question prompt and the input
stream used for each Kind-Component pair can be found using the
logtalk::question_prompt_stream(Kind, Component, Prompt, Stream)
hook predicate. The Check argument is a closure that is converted
into a checking goal by extending it with the user supplied answer. This
predicate implements a read-loop that terminates when the checking
predicate succeeds.
This predicate starts by calling the
logtalk::question_hook(Question, Kind, Component, Check, Answer)
hook predicate. If this predicate succeeds, the ask_question/5
predicate assumes that the question have been successfully asked and
replied.
Modes and number of proofs
ask_question(+nonvar, +nonvar, +nonvar, +callable, -term) - one
Meta-predicate template
ask_question(*, *, *, 1, *)
Errors
(none)
Examples
...,
logtalk::ask_question(enter_age, question, my_app, integer, Age),
...