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A pattern language is nothing more than a precise way of describing someone's experience... -- Christopher Alexander

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Each pattern describes a problem which occurs over and over again in our environment, and then describes the core of the solution to that problem, in such a way that you can use this solution a million times over, without ever doing it the same way twice. -- Christopher Alexander

About patterns

A pattern language

Alexander is an anti-architect. He says that the best (most habitable) buildings are vernacular structures; ordinary rooms and houses, villages and cities that have evolved in time as the people built what they needed and repeated what worked. When we build aright, we inevitably follow these patterns, and enjoy the fullness of our humanity as we inhabit them.

Alexander's intention was to capture the essence of successful solutions to recurring design problems in architecture.

Patterns describe these solutions in a formal way, abstracted away from specific examples.

A pattern language would give people a language to be able to express (again) their own design preferences - to restore power to the people in shaping their own environments.

The goal of A pattern language was to give people a language to express their own design preferences - to restore power to the people in shaping their own environments.

A pattern language describes 253 patterns, ranging in scale from towns down to benches. Its force lies in the combinational expression of the patterns; each pattern is connected to higher and lower patterns:

A pattern language describes 253 patterns, ranging in scale from towns down to benches.

Ideas from this book have been applied to object oriented programming by others. See: Software design patterns book.

Ideas from this book have been embraced by programmers. See: Software design patterns book.

Interaction Design patterns

Interaction Design pattern collections

I intend to add my comments about these collections soon -- Arthur Clemens

The last years a couple of pattern collections for Interaction Design have emerged:

• Amsterdam Collection of Interaction Design Patterns
• Jenifer Tidwell' patterns
• The Interaction Design Patterns Page

• The Design of Sites.

Shortcomings of existing collections

With this Interaction Design pattern collection we want to create a pattern language for "being on the screen", to describe ways to improve the habitability of being, moving, viewing in the online world. To make "screen living" more usable, more understandable, more beautiful, better.

-- ArthurClemens - 10 Feb 2003

Related concepts

• Pattern language

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A pattern language is nothing more than a precise way of describing someone's experience... -- Christopher Alexander

Patterns help us solve design problems - problems that occur time and time again, and are being solved time and time again by designers. Patterns describe practical solutions to these problems and how to apply them in different situations.

Each pattern describes a problem which occurs over and over again in our environment, and then describes the core of the solution to that problem, in such a way that you can use this solution a million times over, without ever doing it the same way twice.

A pattern language is nothing more than a precise way of describing someone's experience... -- Christopher Alexander

Alexander was writing primarily about architecture, construction, and urban/regional planning -- how people organize their environment. His ideas about patterns have been applied to object oriented programming by others:

Each pattern describes a problem which occurs over and over again in our environment, and then describes the core of the solution to that problem, in such a way that you can use this solution a million times over, without ever doing it the same way twice. -- Christopher Alexander

A design pattern systematically names, motivates, and explains a general design that addresses a recurring design problem in object-oriented systems. -- Software design patterns book.

About patterns

The focus with patterns in programming design patterns is on flexibility and reusability.

Alexander is an anti-architect. He says that the best (most habitable) buildings are vernacular structures; ordinary rooms and houses, villages and cities that have evolved in time as the people built what they needed and repeated what worked. When we build aright, we inevitably follow these patterns, and enjoy the fullness of our humanity as we inhabit them.

The goal of A pattern language was to give people a language to express their own design preferences - to restore power to the people in shaping their own environments.

• The pattern language does not tell you how to design anything
• It helps you decide what should be designed
• You get to make up whatever patterns you think will lead to good designs

A pattern language describes 253 patterns, ranging in scale from towns down to benches.

Patterns are about what to build, not how to build it

Ideas from this book have been applied to object oriented programming by others. See: Software design patterns book.

Interaction Design patterns

I intend to add my comments about these collections soon -- Arthur Clemens

With this Interaction Design pattern collection we want to create a pattern language for "being on the screen", to describe ways to improve the habitability of being, moving, viewing in the online world. To make "screen living" more usable, more understandable, more beautiful, better.

Patterns are the recurring solutions to the problems of design. People learn patterns by seeing them and recall them when need be without a lot of effort. Patterns link together in the mind so that one pattern leads to another and another until familiar problems are solved. That is, patterns form languages, not unlike natural languages, within which the human mind can assemble correct and infinitely varied statements from a small number of elements.

Differences between patterns and styleguides

Rewrite: Patterns and Pattern Languages are ways to describe best practices, good designs, and capture experience in a way that it is possible for others to reuse this experience.

Using patterns

That's what the whole idea of documenting patterns is about. A pattern is always something that has been done before, never an experiment. People who document patterns are not inventing them (because an invention cannot be a pattern); they are identifying and naming successful structures and ideas that were not well recognized until then.

Writing patterns

Pattern language

-- ArthurClemens - 10 Feb 2003

About design patterns

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Each pattern describes a problem which occurs over and over again in our environment, and then describes the core of the solution to that problem, in such a way that you can use this solution a million times over, without ever doing it the same way twice. -- Christopher Alexander

Each pattern describes a problem which occurs over and over again in our environment, and then describes the core of the solution to that problem, in such a way that you can use this solution a million times over, without ever doing it the same way twice.

About design patterns

About design patterns

Pattern language

Design patterns

About design patterns

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Each pattern describes a problem which occurs over and over again in our environment, and then describes the core of the solution to that problem, in such a way that you can use this solution a million times over, without ever doing it the same way twice. -- ChristopherAlexander?

Each pattern describes a problem which occurs over and over again in our environment, and then describes the core of the solution to that problem, in such a way that you can use this solution a million times over, without ever doing it the same way twice. -- Christopher Alexander

A design pattern systematically names, motivates, and explains a general design that addresses a recurring design problem in object-oriented systems. -- SoftwareDesignPatternsBook?.

A design pattern systematically names, motivates, and explains a general design that addresses a recurring design problem in object-oriented systems. -- Software design patterns book.

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Alexander was writing primarily about architecture, construction, and urban/regional planning -- how people organize their environment. His ideas about patterns have been applied to object oriented programming by WardCunningham? and others:

Alexander was writing primarily about architecture, construction, and urban/regional planning -- how people organize their environment. His ideas about patterns have been applied to object oriented programming by others:

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A design pattern systematically names, motivates, and explains a general design that addresses a recurring design problem in object-oriented systems. -- DesignPatternsBook?.

A design pattern systematically names, motivates, and explains a general design that addresses a recurring design problem in object-oriented systems. -- SoftwareDesignPatternsBook?.

Design patterns

Design patterns

Alexander was writing primarily about architecture, construction, and urban/regional planning -- how people organize their environment. His ideas about patterns have been applied to software programming by WardCunningham? and others:

Alexander was writing primarily about architecture, construction, and urban/regional planning -- how people organize their environment. His ideas about patterns have been applied to object oriented programming by WardCunningham? and others:

A design pattern systematically names, motivates, and explains a general design that addresses a recurring design problem in object-oriented systems. It describes the problem, the solution, when to apply the solution, and its consequences. It also gives implementation hints and examples. The solution is a general arrangement of objects and classes that solve the problem. The solution is customized and implemented to solve the problem in a particular context. -- DesignPatternsBook?.

A design pattern systematically names, motivates, and explains a general design that addresses a recurring design problem in object-oriented systems. -- DesignPatternsBook?.

The focus in programming design patterns is on reusability and flexibility.

The focus with patterns in programming design patterns is on flexibility and reusability.

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Design patterns

Each pattern describes a problem which occurs over and over again in our environment, and then describes the core of the solution to that problem, in such a way that you can use this solution a million times over, without ever doing it the same way twice. -- ChristopherAlexander?

Alexander was writing primarily about architecture, construction, and urban/regional planning -- how people organize their environment. His ideas about patterns have been applied to software programming by WardCunningham? and others:

A design pattern systematically names, motivates, and explains a general design that addresses a recurring design problem in object-oriented systems. It describes the problem, the solution, when to apply the solution, and its consequences. It also gives implementation hints and examples. The solution is a general arrangement of objects and classes that solve the problem. The solution is customized and implemented to solve the problem in a particular context. -- DesignPatternsBook?.

The focus in programming design patterns is on reusability and flexibility.

• The pattern language does not tell you how to design anything
• It helps you decide what should be designed
• You get to make up whatever patterns you think will lead to good designs

Patterns are about what to build, not how to build it

Patterns are the recurring solutions to the problems of design. People learn patterns by seeing them and recall them when need be without a lot of effort. Patterns link together in the mind so that one pattern leads to another and another until familiar problems are solved. That is, patterns form languages, not unlike natural languages, within which the human mind can assemble correct and infinitely varied statements from a small number of elements.

Rewrite: Patterns and Pattern Languages are ways to describe best practices, good designs, and capture experience in a way that it is possible for others to reuse this experience.

That's what the whole idea of documenting patterns is about. A pattern is always something that has been done before, never an experiment. People who document patterns are not inventing them (because an invention cannot be a pattern); they are identifying and naming successful structures and ideas that were not well recognized until then.