Overview

Data types describe an acceptable format of a value. Data types (validation logic) are distinct from property types (semantic meaning), allowing for single data types to be re-used across many multiple property types.

Primtive data types

HASH contains a series of primitive data types, which are widely used, and from which more complex data types can be constructed. These include:

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  Text: an ordered sequence of characters, including letters, numbers, and symbols

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  Number: an arithmetical value (in the real number system)

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  Boolean: a "true" or "false" value

HASH also contains three other primitive data types, which are unlikely to be useful to most users.

Custom data types

Non-primitive (i.e. "custom") data types provide an easy way to validate more complicated property values which historically might have required the repeated writing or rewriting or Regular Expressions (RegEx), or use of purpose-built programming language data validation libraries -- for example credit card numbers, dates, phone numbers, colors, etc.

Available data types

You can view all of the publicly-shared data types that are in HASH from the Types > Data Types page. This includes commonly-used everyday data formats such as phone numbers, email addressses, URLs and currencies, as well as standard SI units (e.g. time, length, mass, current, temperature, substance amounts and luminosity), in addition to many more niche, domain-specific and esoteric types.

If you can't find an existing data type that fits your needs, you can also create your own.

Creating custom data types

Data type groups

Converting between data types