Nothing
##
## Copyright (C) 2015 Whit Armstrong and Dirk Eddelbuettel and John Laing
##
## This file is part of Rblpapi
##
## Rblpapi is free software: you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published by
## the Free Software Foundation, either version 2 of the License, or
## (at your option) any later version.
##
## Rblpapi is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with Rblpapi. If not, see <http://www.gnu.org/licenses/>.
##' This function uses the Bloomberg API to stream live market data
##'
##' @title Subscribe to streaming market data
##' @details
##' The subscribe function allows one to subscribe to streaming market
##' quotes.
##'
##' Full detials of the subscription string can be found in the header
##' file
##' \href{https://bloomberg.github.io/blpapi-docs/cpp/3.8/blpapi__subscriptionlist_8h.html}{blpapi_subscriptionlist.h}.
##'
##' @param securities A character vector with security symbols in
##' Bloomberg notation.
##' @param fields A character vector with Bloomberg query fields.
##' @param fun An R function to be called on the subscription data.
##' @param options An optional named character vector with option
##' values. Each field must have both a name (designating the option
##' being set) as well as a value.
##' @param identity An optional identity object as created by a
##' \code{blpAuthenticate} call, and retrived via the internal function
##' \code{defaultAuthentication}.
##' @param con A connection object as created by a \code{blpConnect}
##' call, and retrieved via the internal function
##' \code{defaultConnection}.
##' @return This function always returns NULL.
##' @references \url{https://bloomberg.github.io/blpapi-docs/cpp/3.8/}
##' @author Whit Armstrong
##' @examples
##' \dontrun{
##' subscribe(securities=c("TYZ5 Comdty","/cusip/912810RE0@BGN"),
##' fields=c("LAST_PRICE","BID","ASK"),
##' fun=function(x) print(str(x$data)))
##' }
subscribe <- function(securities, fields, fun, options=NULL, identity=defaultAuthentication(), con=defaultConnection()) {
if (any(duplicated(securities))) stop("Duplicated securities submitted.", call.=FALSE)
subscribe_Impl(con, securities, fields, fun, options, identity)
}
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