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Expressions V4


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Reference

  Lexical basics
  Type system
  Variables and assignment
  Operators
  Expression rules
  Control flow
  Functions
  Built-in functions
   None and NaN
   Arithmetic
   Algebra
   Logarithmic and Exponential
   Trigonometric
   Rounding and Centering
   Strings
   Output, Formatting, and Errors
   Dialogs, Clipboard, Platform, and Paths
  Methods and properties
  Built-in methods
   Common Value Methods
   Number Methods
   String Basic Methods
   String Slice Methods
   String Parsing Methods
   String Formatting Methods
   String Regex Methods
   String Trim and Case Methods
  Objects
  Built-in objects
   Global objects
    settings
    session
    python
   Collections
    array
    map
    data_array
   File Format I/O
    image_data
    image_stream
   Utils
    crypto
    timer
   Comm
    serial
   Dialogs
    file_open
    file_save
    msg_ok
    msg_ok_cancel
    msg_yes_no
    msg_password
   GUI objects
    window
    panel
    group
    splitpanel
    label
    textbutton
    drawablebutton
    togglebutton
    togglegroup
    textinput
    textedit
    numinput
    slider
    combobox
    listbox
    progressbar
    led
    separator
    menu
    image
    snake
  Classes and user-defined objects
  Include system
  Error model
  Execution model and sessions
  Host integration
  Limits and performance
  Formal reference
  Glossary

Cookbook

exprv4:reference:objects:global_objects


Global Objects

Global objects are predefined object values supplied by Expr or by the host application.

They are used directly by name. They are not created with constructors.


Global Object Pages

Object Page Description
`settings` settings Host application settings access.
`session` session Active Expr session management and inspection.
`python` python Python execution bridge.

Constructor Difference

Constructor objects are created by calling functions such as `array()`, `crypto()`, or `serial()`.

Global objects already exist in the active session:

print(session.current);
print(settings.exists('displayX'));

Previous: Built-in objects

Next: settings

exprv4/reference/objects/global_objects.txt · Last modified: by 127.0.0.1

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