A

Index

[SYMBOL] [A] [B] [C] [D] [E] [F] [G] [H] [I] [J] [K] [L] [M] [N] [O] [P] [Q] [R] [S] [T] [U] [V] [W] [X] [Y] [Z]

! (exclamation points), identifiers
$& variable, string substitutions
$defout stream, buffering/unbuffering I/O
$flag variable, threads waiting for events
$KCODE global variable
$MATCH variables, string substitutions
$SAFE variable, threads
$stdout variable
% (percent symbol) method
     base number conversions
     formatting numbers for output
     String class
%Q notations, strings
%U specifiers, finding week of the year
%W specifiers, finding week of the year
& (AND) operator
     mathematical sets
     number bit-level operations
&& operators
() (parentheses)
     methods
     strings
* (asterisk) quantifiers, regex
** operators, exponentiation (numbers)
+ operators, mathematical sets
- (hyphens), character classes
/m (multiline modifiers), regular expressions
" (quotes), strings
1xN matrices, creating 2nd
: (colon)
     :include: tags
     :main: tags
     :nodoc: tags
     :notnew: tags
     :title: tags
< (greater than) symbol)
     << (left-shift) operators
     <=> comparison operators 2nd
< > (angle brackets)
<< >> append operators, strings
= (equal sign)
     = (equality) operators
     == (equality operators) 2nd 3rd
     === (relationship) operators 2nd 3rd
     =end markers, embedded documentation
> (less than) operators
     >>(right-shift) operators
     strings
? (question marks)
     ?< notation, regex
     identifiers
@ (at symbol), class instance variables
@@ prefix (variables)
[] brackets
     mathematical sets, creating
     strings
^ (carets)
     ^ (XOR) operator, number bit-level operations
     character classes
     string parameters
_ (underscores)
     _clone method, deep copying
     _dump method
     _dup method, deep copying
     _END_ directives
     _load method, customized marshalling
     _send_, sending explicit messages to objects
     identifiers 2nd
     numbers
_END_ directives
_send_, sending explicit messages to objects
` (grave accents) 2nd
{} (braces)
     blocks
     strings
| (pipes)
     opening
     operators 2nd
     reading
     Ruby interpreter
     threads
     writing
     || operators 2nd