JShell /-n command

[Robert Field]

Michael, Brian's argument and your +1 were convincing.  It is staying.
-Robert

P.S. I'll have to try that -- in bash and jshell



On October 19, 2016 6:46:00 AM Michael Müller 
<michael.mueller at mueller-bruehl.de> wrote:

> Hi,
>
>
> Is this feature removed [ :( ] or will it be kept [ :-) ]?
>
>
> Herzliche Grüße - Best Regards,
>
> Michael Müller
> Brühl, Germany
> blog.mueller-bruehl.de <http://blog.mueller-bruehl.de/>
> it-rezension.de <http://it-rezension.de/>
> @muellermi
>
>
> Read my books
> "Web Development with Java and JSF": https://leanpub.com/jsf
> "Java Lambdas und (parallel) Streams" Deutsche Ausgabe:
> https://leanpub.com/lambdas-de
> "Java Lambdas and (parallel) Streams" English edition:
> https://leanpub.com/lambdas
>
> On 10/13/2016 07:04 PM, Brian Goetz wrote:
>> This is derived from a feature from Unix shells, which I use all the
>> time; frequently you have a sequence of "do this, then do that, then
>> do the other thing", and doing "-n" repeatedly handles that sequence.
>> Easier than "hit up arrow five times, return, repeat".
>>
>> On 10/12/2016 5:15 PM, Robert Field wrote:
>>> I agree this isn't useful and is confusing -- for another reason too
>>> -- from /help:
>>>
>>> | /<id> -- re-run snippet by id
>>> | /-<n> -- re-run n-th previous snippet
>>>
>>> So /3 refers to a snippet-id and /-3 refers to a count backwards.
>>>
>>> I've never used the /-n form.  For one, the up-arrow is much more
>>> convenient.
>>>
>>> Unless I hear an strong advocate, I will remove.
>>>
>>> Thanks,
>>> Robert
>>>
>>> On 10/12/16 09:55, Paul Deitel wrote:
>>>> Is the command
>>>>
>>>>     /-n
>>>>
>>>> actually useful? Chances are, if you have any decent number of
>>>> snippets, you will not recall more than the last few you typed.
>>>>
>>>> You can already execute the last valid snippet with /!.
>>>>
>>>> For anything else, you’d probably have to do a /list to see what
>>>> valid snippets you have. At that point, rather than doing /-n, you’d
>>>> just use /<id> to execute a given snippet.
>>>>
>>>> One point of emphasis in many JShell presentation has been how it’s
>>>> useful for beginners. I’ve been teaching beginning programmers for
>>>> 25+ years. A beginner seeing options like this will only get confused.
>>>>
>>>> I recommend removing /-n as an option.
>>>>
>>>> Paul
>>>>
>>>> Paul J. Deitel, CEO
>>>> Deitel & Associates, Inc.
>>>> Oracle Java Champion
>>>> Microsoft Visual C# MVP 2012-2014
>>>>
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>>>
>>
>>
>