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Sophrinix / TryRuby

Try Ruby is a interactive shell that quickly and whimsically teaches the Ruby programming language. Originally _why's idea, it has been recreated from the ground up by Rubyists who have a passion for Ruby and for teaching their fellow (wo)man how to program.
tryruby.org
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Time.now issue #144

Open dberzano opened 12 years ago

dberzano commented 12 years ago

This is strange. When I assign Time.now to a variable, I expect to have stored in curtime the time when I assigned the value.

Instead, I always get the very current time, i.e. the time when I access the variable:

curtime = Time.now
=> 2011-06-02 16:08:52 +0000
>> curtime
=> 2011-06-02 16:08:54 +0000
>> curtime
=> 2011-06-02 16:08:57 +0000
>> curtime
=> 2011-06-02 16:09:00 +0000
>> curtime
=> 2011-06-02 16:09:03 +0000

Cheers,

Dario Berzano.

davidmiani commented 12 years ago

Confirmed. Unfortunately this is due to the way TryRuby remembers the users session. Instead of keeping an irb process running per user (we had a lot of problems in making that secure), on every method invocation it starts a new session, repeats all past instructions and outputs the result of the latest command. Therefor each time this is done, curtime will get a new value. A similar effect can be seen by running the commands x = rand, x, x; each time x will have a new value.

Unfortunately I don't know an easy solution to this other than to get irb sessions working securely, which would need a lot of rewriting and a way to solve some security issues.

Thanks for the report though, I didn't think of this situation :S