Other Languages

library(ggplot2)

centre <- function(x, type, ...) {
  switch(type,
         mean = mean(x),
         median = median(x),
         trimmed = mean(x, trim = .1))
}

myVar1
myVar.2
data$x
foo "bar" baz
# test "test"
"test # test"

(123) (1) (10) (0.1) (.2) (1e-7)
(1.2e+7) (2e) (3e+10) (0x0) (0xa)
(0xabcdef1234567890) (123L) (1L)
(0x10L) (10000000L) (1e6L) (1.1L)
(1e-3L) (4123.381E-10i)
(3.) (3.E10) # BUG: .E10 should be part of number

# Numbers in some different contexts
1L
0x40
.234
3.
1L + 30
plot(cars, xlim=20)
plot(cars, xlim=0x20)
foo<-30
my.data.3 <- read() # not a number
c(1,2,3)
1%%2

"this is a quote that spans
multiple lines
\"

is this still a quote? it should be.
# even still!

" # now we're done.

'same for
single quotes #'

# keywords
NULL, NA, TRUE, FALSE, Inf, NaN, NA_integer_,
NA_real_, NA_character_, NA_complex_, function,
while, repeat, for, if, in, else, next, break,
..., ..1, ..2

# not keywords
the quick brown fox jumped over the lazy dogs
null na true false inf nan na_integer_ na_real_
na_character_ na_complex_ Function While Repeat
For If In Else Next Break .. .... "NULL" `NULL` 'NULL'

# operators
+, -, *, /, %%, ^, >, >=, <, <=, ==, !=, !, &, |, ~,
->, <-, <<-, $, :, ::

# infix operator
foo %union% bar
%"test"%
`"test"`

#!/bin/bash

###### BEGIN CONFIG
ACCEPTED_HOSTS="/root/.hag_accepted.conf"
BE_VERBOSE=false
###### END CONFIG

if [ "$UID" -ne 0 ]
then
 echo "Superuser rights is required"
 echo 'Printing the # sign'
 exit 2
fi

if test $# -eq 0
then
elif test [ $1 == 'start' ]
else
fi

genApacheConf(){
 if [[ "$2" = "www" ]]
 then
  full_domain=$1
 else
  full_domain=$2.$1
 fi
 host_root="${APACHE_HOME_DIR}$1/$2"
 echo -e "# Host $1/$2 :"
}

# loads object
sub load
{
  my $flds = $c->db_load($id,@_) || do {
    Carp::carp "Can`t load (class: $c, id: $id): '$!'"; return undef
  };
  my $o = $c->_perl_new();
  $id12 = $id / 24 / 3600;
  $o->{'ID'} = $id12 + 123;
  #$o->{'SHCUT'} = $flds->{'SHCUT'};
  my $p = $o->props;
  my $vt;
  $string =~ m/^sought_text$/;
  $items = split //, 'abc';
  for my $key (keys %$p)
  {
    if(${$vt.'::property'}) {
      $o->{$key . '_real'} = $flds->{$key};
      tie $o->{$key}, 'CMSBuilder::Property', $o, $key;
    }
  }
  $o->save if delete $o->{'_save_after_load'};
  return $o;
}

=head1 NAME
POD till the end of file

class A < B; def self.create(object = User) object end end
class Zebra; def inspect; "X#{2 + self.object_id}" end end

module ABC::DEF
  include Comparable

  # @param test
  # @return [String] nothing
  def foo(test)
    Thread.new do |blockvar|
      ABC::DEF.reverse(:a_symbol, :'a symbol', :<=>, 'test' + test)
    end.join
  end

  def [](index) self[index] end
  def ==(other) other == self end
end

anIdentifier = an_identifier
Constant = 1
render action: :new

@requires_authorization
def somefunc(param1='', param2=0):
    r'''A docstring'''
    if param1 > param2: # interesting
            print 'Gre\'ater'
        return (param2 - param1 + 1) or None

        class SomeClass:
            pass

        >>> message = '''interpreter
        ... prompt'''