#' A function that changes the names of a dataframe columns
#' @description This function changes the names of a dataframe columns adding a suffix to the current names (uses "_" to separate coulmn name and suffix)
#' @param db dataframe
#' @param suffixb dataframe
renamecols<-function(db,suffix){colnames(db)<-paste(colnames(db),suffix,sep='_'); return(db)}
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