Table Of Contents

Read Key (Read Key) (G Dataflow)

Version:
    Last Modified: March 30, 2017

    Reads a value associated with a key in a specified section from the specified configuration data.

    If the key does not exist, the node returns the default value. This node supports multibyte characters in strings.

    connector_pane_image
    datatype_icon

    section

    Name of the section from which to read the specified key.

    datatype_icon

    reference in

    Reference to the configuration data.

    datatype_icon

    key

    Name of the key to read.

    datatype_icon

    default value

    Value to return if the node does not find the key in the specified section or if an error occurs.

    datatype_icon

    error in

    Error conditions that occur before this node runs.

    The node responds to this input according to standard error behavior.

    Standard Error Behavior

    Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.

    error in does not contain an error error in contains an error
    If no error occurred before the node runs, the node begins execution normally.

    If no error occurs while the node runs, it returns no error. If an error does occur while the node runs, it returns that error information as error out.

    If an error occurred before the node runs, the node does not execute. Instead, it returns the error in value as error out.

    Default: No error

    datatype_icon

    reference out

    Reference to the configuration data.

    datatype_icon

    found

    Boolean value that indicates whether this node found the key in the specified section.

    True Found the key in the specified section.
    False Did not find the key in the specified section.
    datatype_icon

    value

    Value of the key.

    datatype_icon

    error out

    Error information.

    The node produces this output according to standard error behavior.

    Standard Error Behavior

    Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.

    error in does not contain an error error in contains an error
    If no error occurred before the node runs, the node begins execution normally.

    If no error occurs while the node runs, it returns no error. If an error does occur while the node runs, it returns that error information as error out.

    If an error occurred before the node runs, the node does not execute. Instead, it returns the error in value as error out.

    Where This Node Can Run:

    Desktop OS: Windows

    FPGA: This product does not support FPGA devices


    Recently Viewed Topics