Properties

Properties are key/value pairs which are assigned to a thing. The collection itself is also a thing to which properties can be assigned. For example: .answer = 42; creates a property answer with value 42 and the property will be assigned to the collection.

The key of a property must be of type string. If the key is not a valid name, then the property can be set by using the square bracket [..] notation or the set(..) / get(..) functions can be used.

There are 16, single character keys that are reserved for ThingsDB and cannot be used as key strings:

Example

x = {};

// Character `!` is reserved and cannot be used as key
assert(is_err(try({
    x['!'] = nil;
})));

// Note that it is fine to use the `!` in any other combination as key
// For example, the following key is perfectly valid:
x['!!'] = nil;

x;

Return value in JSON format

{
    "!!": null
}