The do dialect interpreted by the do function, is an expression-oriented sublanguage of the data exchange dialect. 6
The most frequently used evaluator is the do function. comREBOLWeek NewsREBOL CommunityLearn REBOLCheyenne Web Server
Updated 24-Jan-2016, WIP Wiki, REBOL/Core anchor my site The set-word form of a word can be used for assignment.

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. For example check out the decompress function. 0 Development
All the main links can be found here. ) or scalar values like words, set-words (words suffixed by the colon), get-words (words prefixed by the colon), lit-words (words prefixed by the apostrophe), numbers, money, characters, etc.

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7. The first part makes you familiar with REBOL concepts and terms, summarizes all language elements and provides a profound starting ground for own programs and the following specialized chapters. In the do dialect, return is a global variable referring to a native function passing back a function result value. This tutorial demonstrates how easy it is to accomplish real world programming goals with Rebol. Multi-line comments or comments not ignored by the lexical parser can be written using “ordinary” datatypes like multi-line strings.

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Carl Sassenrath, architect and primary developer of AmigaOS, designed REBOL over a 20-year period.
An example of Rebol’s dialecting abilities can be seen with the word return. 4. comCarl’s REBOL BlogREBOL 3. Click on any link to see the details.

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Using prefix notation, the usage of parentheses in expressions can be avoided. For example,
returns 1, since the infix addition takes precedence over the computation of the absolute value. When evaluating infix expressions, the order of evaluation is left to right, no operator takes precedence over another. 6
The parse dialect belongs to the family of grammars represented by the top-down parsing language or the parsing expression grammar (PEG). It is recommended that you read the chapters you are interested most at the beginning, in order to be able to write programs you can use and the other chapters when there is time, in order to get a decent understanding of the REBOL universe. Sassenrath based REBOL on his study of denotational semantics, which basically means finding mathematical objects called domains that represent what programs do.

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6 In the following example the Visual interface dialect is used to describe a simple Hello world program with a graphical user interface:
This is how a similar example looks in R3-GUI:

Rebol domain-specific languages, called dialects, are micro-languages optimized for a specific purpose. Providing three values does not meet the requirement.
In contrast to programming languages like C, the data exchange dialect does not consist of declarations, statements, expressions or keywords. 8 or Rebol/SDK 2. The common platform for all Rebol dialects is the data exchange dialect; other dialects are usually derived from it.

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Wikipedia provides an example of REBOL dialects: “In the data exchange dialect, return is just a word not having any specific meaning. REBOL was first released in 1997 and since then there have been many improvements. The chapters in the second part are self-contained texts on various interesting REBOL topics collected from the REBOL/Core User Guide, the mailing list, various resources from other people and of course, my experience with programming in REBOL. While not having statements, assignment, together with functions with side-effects can be used for imperative programming.

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>> join “hello” [“world” “!”] == “helloworld!” ; this does the trick

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Subscribe toPosts [Atom]This is a blog about Rebol, it’s a fantastic free programming language, it permits easily to create complete software with few lines of code. .