Types/Literals

Dasel supports the following literal types in queries.

Integers

Integers are represented as whole numbers.

1
5234
-530

Note: If -530 is detected as a bad binary expression (nothing subtract 530) it can be grouped, e.g. (-530).

Floats

Numbers are interpreted as floats when they contain a decimal place . or are followed with an f.

1.1
23.45
123f

Booleans

Bools are matched by a case insensitive match on true or false.

true
True
TRUE
false
False
FALSE

Strings

Strings are a sequence of characters surrounded by quotes — both single and double quotes are supported.

"I am a string"
'I am a string'
"I am a string with an escaped \" inside of me"

Null

The null literal represents an absent or empty value.

null

null is returned by functions like first and last on empty arrays, and is the fallback trigger for the ?? coalesce operator.

Arrays

Array literals are defined with square brackets. See Arrays/slices for full documentation.

[1, 2, 3]
["a", "b", "c"]
[1, "mixed", true, null]

Objects

Object/map literals are defined with curly braces. See Objects/maps for full documentation.

{"name": "Tom", "age": 30}