__ENCODING__ |
The script encoding of the current file. |
__LINE__ |
The line number of this keyword in the current file. |
__FILE__ |
The path to the current file. |
BEGIN |
Runs before any other code in the current file. |
END |
Runs after any other code in the current file. |
alias |
Creates an alias between two methods (and other things). |
and |
Short-circuit Boolean and with lower precedence than && |
begin |
Starts an exception handling block. |
break |
Leaves a block early. |
case |
Starts a case expression. |
class |
Creates or opens a class. |
def |
Defines a method. |
defined? |
Returns a string describing its argument. |
do |
Starts a block. |
else |
The unhandled condition in case, if and unless expressions. |
elsif |
An alternate condition for an if expression. |
end |
The end of a syntax block. Used by classes, modules, methods, exception handling and control expressions. |
ensure |
Starts a section of code that is always run when an exception is raised. |
false |
Boolean false. |
for |
A loop that is similar to using the each method. |
if |
Used for if and modifier if expressions. |
in |
Used to separate the iterable object and iterator variable in a for loop. |
module |
Creates or opens a module. |
next |
Skips the rest of the block. |
nil |
A false value usually indicating “no value” or “unknown”. |
not |
Inverts the following boolean expression. Has a lower precedence than ! |
or |
Boolean or with lower precedence than || |
redo |
Restarts execution in the current block. |
rescue |
Starts an exception section of code in a begin block. |
retry |
Retries an exception block. |
return |
Exits a method. |
self |
The object the current method is attached to. |
super |
Calls the current method in a superclass. |
then |
Indicates the end of conditional blocks in control structures. |
true |
Boolean true. |
undef |
Prevents a class or module from responding to a method call. |
unless |
Used for unless and modifier unless expressions. |
until |
Creates a loop that executes until the condition is true. |
when |
A condition in a case expression. |
while |
Creates a loop that executes while the condition is true. |
yield |
Starts execution of the block sent to the current method. |