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# SPDX-Copyright: Copyright (c) Capital One Services, LLC
# SPDX-License-Identifier: Apache-2.0
# Copyright 2017 Capital One Services, LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
#
# You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software distributed
# under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS
# OF ANY KIND, either express or implied.
#' checkKeysExist
#'
#' @param df a data frame
#' @param keys a list of expected columns
#' @return None. Stops if keys are not present as column names in df.
#' @examples
#' \dontrun{checkKeysExist(iris, 'columnName')}
checkKeysExist <- function(df,keys) {
'%!in%' <- function(x,y)!('%in%'(x,y))
for (i in 1:length(keys)) {
if (keys[i] %!in% names(df)) {
stop(paste0('ERROR : Key ',keys[i],' not found'))
}
}
}
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