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For all the people out there who want to create Perl hashes out of their R lists:
# convert a R list into a Perl hash
list2hash<-function(data,firstcall=TRUE) {
output<-''
if(is.list(data)) {
if(length(names(data)) > 0) {
output<-"{\n"
for(i in names(data)) {
key<-i
# value<-data$i
value<-eval(parse(text=paste("data",i,sep="$")))
output<-paste(output,key," => ",list2hash(value,FALSE),"\n",sep='')
}
output<-paste(output,"},\n",sep='')
} else {
# make me a vector
output<-"[\n"
for(i in data) {
output<-paste(output,list2hash(i,FALSE),"\n",sep="")
}
output<-paste(output,"],\n",sep='')
}
} else {
if(is.vector(data) && length(data) > 1) {
# I am a vector
output<-"[\n"
for(i in data) {
output<-paste(output,list2hash(i,FALSE),"\n",sep="")
}
output<-paste(output,"],\n",sep='')
} else {
# I'm not a couth vector (where couth>1), nor a list - so I must be a single value
output<-paste("'",data,"',",sep='')
}
}
if(firstcall) {
# if you wanted to prefix the output with '$VAR='
# myoutput<-paste("$",substitute(data),"=",substr(output,0,nchar(output)-2),";\n",sep='')
myoutput<-paste(substr(output,0,nchar(output)-2),";\n",sep='')
return(cat(myoutput))
} else {
return(output)
}
}
If you'd like to check the validity of an email address, use this function:
validemail<-function(address) length(grep("^[\\w!#\\$%&'*+\\-\\/=?^`{|}~][\\w!#\\$%&'*+\\-\\/=?^`{|}~.]{0,62}[\\w!#\\$%&'*+\\-\\/=?^`{|}~]{1}@([\\w\\d\\-]+\\.)+[\\w\\d\\-]+$",address,perl=TRUE))
Topic revision: r2 - 06 Jun 2007, ColeBeck
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