Date and DateTime on the Mac

[Ronny]

I have installed ruby for Mac OS/X. Strangely, the classes Date and
DateTime
are not known:

NameError: uninitialized constant DateTime
from (irb):1

At least some other classes (I tried File and Time) exist, so it is
not that the
installation were completely broken.

What could be the problem here?

Ronald

 

[Gary Wright]

I have installed ruby for Mac OS/X. Strangely, the classes Date and
DateTime
are not known:

NameError: uninitialized constant DateTime
from (irb):1

At least some other classes (I tried File and Time) exist, so it is
not that the
installation were completely broken.

What could be the problem here?

did you do a

require 'date'

before trying to access Date or DateTime. They are not part of
the Core classes that are automatically defined when Ruby starts up.

 

[Ronald Fischer]

did you do a
=20
require 'date'
=20
before trying to access Date or DateTime. They are not part of
the Core classes that are automatically defined when Ruby starts up.

OK, that solves it - but interestingly, a require 'date' is=20
not necessary when running under Windows (both in the native and
cygwin build of Ruby).=20

Ronald
--=20
Ronald Fischer <[email protected]>
Phone: +49-89-452133-162

 

[John Joyce]

OK, that solves it - but interestingly, a require 'date' is
not necessary when running under Windows (both in the native and
cygwin build of Ruby).

Ronald

That may mean it's loading all those libraries on windows even if you
don't need them...
You might run a test to see if methods from various libraries are
available.

 

[Ronald Fischer]

OK, that solves it - but interestingly, a require 'date' is

That may mean it's loading all those libraries on windows=20
even if you =20
don't need them...
You might run a test to see if methods from various libraries are =20
available.

I wonder whether this is really the "official" definition of Ruby that
date.rb must be required explicitly. On Linux, it isn't necessary
either,
and at least the Ruby books I have access to ("The Ruby Way" by Hal
Fulton
and "The Ruby Cookbook" by Richardson and Carlson) don't mention a
require 'date' when discussing the Date and DateTime classes...

Ronald
--=20
Ronald Fischer <[email protected]>
Phone: +49-89-452133-162