Built-in Objects

Built-in objects are object types provided by Expr or the host application.

This chapter is the entry point for detailed built-in object reference pages.

Global Objects

Object	Name	Description
Global objects	`settings`, `controller`, `session`, `python`	Predefined objects available directly by name.

Object	Constructor	Description
Collections	`array(…)`, `map(…)`, `bytes(…)`	Lists, key/value maps, and binary byte buffers.

Object	Constructor	Description
File Format I/O	`image_data()`, `image_stream()`	Objects for reading, writing, or holding external file format data.

Object	Constructor	Description
Utils	`crypto()`, `timer(callback)`	Helper objects for encryption and timed callbacks.

Object	Constructor	Description
Comm	`serial()`	Communication objects for external interfaces.

Object	Constructor	Description
Dialogs	`file_open()`, `file_save()`, `msg_ok()`, …	Host dialogs.

Object	Constructor	Description
GUI objects	`window()`, `panel()`, `image()`, …	Custom dialogs, forms, controls, and visual widgets.

All object values support `to_string()`.

array(1, 2).to_string();

Objects that are cloneable also support `clone()`.

copy = array(1, 2).clone();

If an object does not support cloning, `clone()` raises a runtime error.

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