Raku highlighting| docs.raku.org
In common with most modern programming languages, Raku is designed to support parallelism, asynchronicity and concurrency. Parallelism is about doing multiple things at once. Asynchronous programming, which is sometimes called event driven or reactive programming, is about supporting changes in the program flow caused by events triggered elsewhere in the program. Finally, concurrency is about the coordination of access and modification of some shared resources.| docs.raku.org
Raku highlighting| docs.raku.org
In Grammar§| docs.raku.org
Exceptions in Raku are objects that hold information about errors. An error can be, for example, the unexpected receiving of data or a network connection no longer available, or a missing file. The information that an exception object stores is, for instance, a human-readable message about the error condition, the backtrace of the raising of the error, and so on.| docs.raku.org
Raku highlighting| docs.raku.org
Raku highlighting| docs.raku.org
Raku highlighting| docs.raku.org
Raku highlighting| docs.raku.org
Raku highlighting| docs.raku.org
Raku highlighting| docs.raku.org
Raku highlighting| docs.raku.org
Signatures appear inside parentheses after subroutine and method names, on blocks after a -> or <-> arrow, as the input to variable declarators like my, or as a separate term starting with a colon.| docs.raku.org
Raku highlighting| docs.raku.org
Raku highlighting| docs.raku.org
These routines are defined in different files along with one or several other classes, but are not actually attached to any particular class or role.| docs.raku.org
Raku highlighting| docs.raku.org
Raku highlighting| docs.raku.org
Raku highlighting| docs.raku.org
In Independent routines§| docs.raku.org
Raku highlighting| docs.raku.org
Raku highlighting| docs.raku.org
Raku highlighting| docs.raku.org
Raku highlighting| docs.raku.org
Raku highlighting| docs.raku.org
Raku highlighting| docs.raku.org
Raku highlighting| docs.raku.org
Lists have been a central part of computing since before there were computers, during which time many devils have taken up residence in their details. They were actually one of the hardest parts of Raku to design, but through persistence and patience, Raku has arrived with an elegant system for handling them.| docs.raku.org
In Any§| docs.raku.org
In IO::CatHandle§| docs.raku.org
In Nil§| docs.raku.org
In List§| docs.raku.org
In List§| docs.raku.org
In Any§| docs.raku.org
Routines are one of the means Raku has to reuse code. They come in several forms, most notably Methods, which belong in classes and roles and are associated with an object; and functions (also called subroutines or Subs, for short), which can be called independently of objects.| docs.raku.org
Statements§| docs.raku.org
Raku highlighting| docs.raku.org
In Any§| docs.raku.org
Variables are symbolic names for values or containers. Variable declarations or assignment of values may create a container on the fly. Variable names can start with or without a special character called a sigil, followed optionally by a second special character named twigil and then an identifier.| docs.raku.org
One often needs to refer to a specific element (or slice of elements) from a collection or data structure. Borrowing from mathematical notation where the components of a vector v would be referred to as v₁, v₂, v₃, this concept is called "subscripting" (or "indexing") in Raku.| docs.raku.org
Definition of a Raku type§| docs.raku.org
A regular expression is a sequence of characters that defines a certain text pattern, typically one that one wishes to find in some large body of text.| docs.raku.org
See creating operators on how to define new operators.| docs.raku.org