MESSAGE
| DATE | 2014-09-02 |
| FROM | Ruben Safir
|
| SUBJECT | Re: [NYLXS - HANGOUT] Ruby groups
|
You have to love this
Ruby uses a convention that may seem strange at first: the first
characters of a name indicate
how the name is used. Local variables, method parameters, and method
names should all
start with a lowercase letter or with an underscore. Global variables
are prefixed with a
dollar sign ($), and instance variables begin with an “at” sign (-at-).
Class variables start with
two “at” signs (-at--at-). 2 Finally, class names, module names, and constants
must start with
an uppercase letter. Samples of different names are given in Table 2.1
on the next page.
Following this initial character, a name can be any combination of
letters, digits, and under-
scores (with the proviso that the character following an -at- sign may not
be a digit). How-
ever, by convention, multiword instance variables are written with
underscores between the
words, and multiword class names are written in MixedCase (with each
word capitalized).
Method names may end with the characters ?, !, and =.
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