Types
Clarity Type System
The type system contains the following types:
| Types | Notes |
|---|---|
int | signed 128-bit integer |
uint | unsigned 128-bit integer |
bool | boolean value (true or false) |
principal | object representing a principal (whether a contract principal or standard principal) |
(buff max-len) | byte buffer of maximum length max-len. |
(string-ascii max-len) | ASCII string of maximum length max-len |
(string-utf8 max-len) | UTF-8 string of maximum length max-len (u"A smiley face emoji \u{1F600} as a utf8 string") |
(list max-len entry-type) | list of maximum length max-len, with entries of type entry-type |
{label-0: value-type-0, label-1: value-type-1, ...} | tuple, group of data values with named fields |
(optional some-type) | an option type for objects that can either be (some value) or none |
(response ok-type err-type) | object used by public functions to commit their changes or abort. May be returned or used by other functions as well, however, only public functions have the commit/abort behavior. |