8 lines
726 B
Plaintext
8 lines
726 B
Plaintext
Many language implementations come with an ''interactive mode''. This is a [[wp:command-line interpreter|command-line interpreter]] that reads lines from the user and evaluates these lines as statements or expressions. An interactive mode may also be known as a ''command mode'', a ''[[wp:read-eval-print loop|read-eval-print loop]]'' (REPL), or a ''shell''.
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Show how to start this mode, then, as a small example of its use, interactively create a function of two strings and a separator that returns the strings separated by two concatenated instances of the separator.
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For example, <tt>f('Rosetta', 'Code', ':')</tt> should return <tt>'Rosetta::Code'</tt>
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Note: this task is not about creating your own interactive mode.
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