#' Collapse a single-level list to URL parameters
#'
#' @param par list of parameters
#' @return character vector of URL parameters
listToParams <- function(par) {
if(length(par) > 0) {
par <- sapply(1:length(par),
function(n) {
if(!is.null(par[[n]]))
paste(URLencode(names(par[n])),
URLencode(as.character(par[[n]])),
sep="=")
else ""
})
par <- paste(par[par!=""], collapse="&")
} else par <- ""
par
}
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