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interp_dev_list

r::interpreter::builtins::graphics

Function interp_dev_list 

Source 
fn interp_dev_list(
    _args: &[RValue],
    _named: &[(String, RValue)],
    context: &BuiltinContext<'_>,
) -> Result<RValue, RError>
Expand description

List all open graphics devices.

Returns a named integer vector of device numbers. Device 1 is always the null device and is not listed.

@return named integer vector of open device numbers