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Perl 6 cheat sheet v6 20171128 »ö«
SIGILS MAJOR/MINOR CONTEXTS ACCESS ARRAYS HASHES
$scalar item list sink whole: @array[] %hash{}
@array Str flat/slice element: @array[0] %hash{'a'}
%hash Num lazy/eager/hyper/race (or) %hash<a>
&code Bool slice: @array[0,2] %hash{'a','b'}
COMPOSERS (or) %hash<a b>
TWIGILS [ ] array
$normal-lexical { } block/hash AUTOMATIC DEREFERENCE
$?compiler-constant < > quotewords &($foo)(1,2) == $foo(1,2)
$*dynamic-or-global (,) list @($foo)[1] == $foo[1]
$.public-accessor :() signature %($foo){'bar'} == $foo<bar>
$!private-attribute \() capture @(@($foo)[1])[2] == $foo[1][2]
$^positional-param
$:named-parameter CONTROL SYNTAX
$=pod-info for LIST { } # implicit $_ arg
$<named-match-capture> for LIST -> $a, $b { } # explicit args
$~slang-variable while/until EXPR { }
repeat while/until EXPR { } # do at least once
OPERATOR PRECEDENCE loop { } loop (a;b;c) { } # parens required!
.method .[] i if EXPR { } elsif EXPR { } else { } # truthy
++ -- with EXPR { } orwith EXPR { } else { } # defined
** given EXPR { when EXPR { } default { } }
unary + - ~ ! ? ^ EXPR if EXPR for LIST; # list comprehension
* / % %% div next, last, redo # loop controls
+ - proceed, succeed # switch controls
x xx TYPES
~ Bit Int Rat FatRat UInt Num Complex int8 int32 complex64 etc.
& Str Buf Blob Uni NFC NFD NFKC NFKD buf8 buf16 buf32 utf8
| ^ IO Mu Any Cool Junction Supply Whatever Slip Empty
sleep abs sin temp let List Capture Signature
<=> leg cmp .. but SCOPE DECLARATORS Pair Range Set Bag Mix
~~ > == gt eq === eqv !op my lexical scope SetHash BagHash MixHash
&& our package scope Scalar Array Hash Code
|| ^^ // min max has instance scope Enum Bool Order Signal
??!! ff anon no scope at all Block Routine Sub
= := op= => state persistent lexical Method Regex Match
so not augment benign parasitic Nil Failure Exception
, : supersede deadly parasitic Instant Duration
X Xop Z Zop ... Date DateTime
say die map etc. OPERATOR DOMAINS
and Numeric: == !==(!=) + < > <=> <= >=
or xor Stringy: eq !eq(ne) ~ lt gt leg le ge
<== ==> Value: eqv !eqv before after cmp !after !before
ObjectID: === !===
METAOPERATORS LINKS IRC on irc.freenode.net
[op] reduce listop to A op B op C... perl6.org #perl6 #perl6-dev
op= A = A op B rakudo.org #moarvm
!op !(A op B)
»op« hyper/vectorize REGEX METACHARS REGEX MODIFIERS
Zop zip with op ^ $ string begin/end :i ignore case
Xop cross with op ^^ $$ line begin/end :m ignore marks
Rop reverse args + one or more :g global
Sop sequentialize * zero or more :r ratchet
? zero or one :s sigspace
SPECIAL VARIABLES **1..3 repeat in range :4th nth occurrence
$_ current topic () capture to $0,$1 :4x n times
$/ regex result [] no capture
$! error object <foo> subrule REGEX CHARCLASSES
@*ARGS command line <[]> character class . == anychar, \N non \n
@*INC include path | parallel or \s == <space>, \S non
%*ENV environment || serial or \d == <digit>, \D non
$*PID process id « » word boundary \w == <+alpha+digit+[_]>
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