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Checks that the extract_input specification does not allow multiple selection

Source: R/input_checks.R
check_no_multiple_selection.Rd

Stops if condition not met.

Usage 

check_no_multiple_selection(extract_input)

Arguments

extract_input

(list or NULL) a list of data_extract_spec

Value

Raises an error when check fails, otherwise, it returns NULL, invisibly.