Namespaced IDs for inputs/outputs
NS function creates namespaced IDs out of bare IDs, by joining
ns.sep as the delimiter. It is intended for use in Shiny
modules. See http://shiny.rstudio.com/articles/modules.html.
NS(namespace, id = NULL)ns.sep
- The character vector to use for the namespace. This can have
any length, though a single element is most common. Length 0 will cause the
idto be returned without a namespace, and length 2 will be interpreted as multiple namespaces, in increasing order of specificity (i.e. starting with the top-level namespace).
- The id string to be namespaced (optional).
Shiny applications use IDs to identify inputs and outputs. These IDs must be
unique within an application, as accidentally using the same input/output ID
more than once will result in unexpected behavior. The traditional solution
for preventing name collisions is namespaces; a namespace is to an ID
as a directory is to a file. Use the
NS function to turn a bare ID
into a namespaced one, by combining them with
ns.sep in between.
idis missing, returns a function that expects an id string as its only argument and returns that id with the namespace prepended.
An object of class
character of length 1.