new_issues_illegal_values<-function(df,variable,legal_values,...){
if(!any(names(df)==variable)){
return(new_issues(paste0("missing column: ",variable)))
}
values<-unique(as.character(df[[variable]]))
illegal_values<-values[which(!(values %in% legal_values))]
if(length(illegal_values)==0){
return(new_issues())
}
illegal_values[is.na(illegal_values)]<-"NA"
issue_names<-paste0("illegal value in '" ,variable, "': '",illegal_values,"'")
new_issues(issue_names,...)
}
new_issues_df_missing_variables <- function(df,variables, ...){
if(!is.data.frame(df)){return(new_issues("not a data.frame",...))}
missing_vars<-variables[!(variables %in% names(df))]
if(length(missing_vars)==0){return(new_issues())}
new_issues(issue = paste("column missing: ", missing_vars),...)
}
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