Simple Ask Dialogs

The Ask Dialog api provides a simple means for collecting from 1 to 7 string-typed values from the user, with a default prompt message.

The following example is in examples/dialog/ask-demo.fnl.

: ask-demo
  ( "What is your name?" "What is your quest?" )
  Dialog.ask^ if
    "Nice to meet you, %s. Off you go — \"%s\" is a fine quest.\n" fmt $
  else
    "Then we shan't proceed. Nobody expects the Spanish Inquisition.\n" $
  then
;

The code provides the requested field labels using the convenient Paren operators for building a List. It then asks Dialog to post the dialog via the ask method, which returns one of two types of result shape:

• true then a List of the replies, in order of request
• false and no List

You test for the response type using an if statement, and if true can then pass the List directly to a fmt statement and print it out (or use the replies however otherwise). If false, you can print a default reply, as above.

Dialog is covered in more detail in Input/UI Dialogs,
Paren operators in Compound Builders, and
fmt in Output Formatting.