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• Type

type

Describes a kind of value.

To style your document, you need to work with values of different kinds: Lengths specifying the size of your elements, colors for your text and shapes, and more. Typst categorizes these into clearly defined types and tells you where it expects which type of value.

Apart from basic types for numeric values and typical types known from programming languages, Typst provides a special type for content. A value of this type can hold anything that you can enter into your document: Text, elements like headings and shapes, and style information.

Example

#let x = 10
#if type(x) == int [
  #x is an integer!
] else [
  #x is another value...
]

An image is of type
#type(image("glacier.jpg")).

The type of 10 is int. Now, what is the type of int or even type?

#type(int) \
#type(type)

Compatibility

In Typst 0.7 and lower, the type function returned a string instead of a type. Compatibility with the old way will remain for a while to give package authors time to upgrade, but it will be removed at some point.

• Checks like int == "integer" evaluate to true
• Adding/joining a type and string will yield a string
• The in operator on a type and a dictionary will evaluate to true if the dictionary has a string key matching the type's name

构造函数

如果类型具有构造函数，可以像函数一样调用它来创建一个该类型的值。

Determines a value's type.

#type(12) \
#type(14.7) \
#type("hello") \
#type(<glacier>) \
#type([Hi]) \
#type(x => x + 1) \
#type(type)

value

any

必需参数位置参数

位置参数按顺序传入，不带名称。

The value whose type's to determine.

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