Namespaced IDs for inputs/outputs
The NS
function creates namespaced IDs out of bare IDs, by joining
them using ns.sep
as the delimiter. It is intended for use in Shiny
modules. See https://shiny.rstudio.com/articles/modules.html.
NS(namespace, id = NULL) ns.sep
namespace |
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
|
id |
The id string to be namespaced (optional). |
An object of class character
of length 1.
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.
If id
is missing, returns a function that expects an id string
as its only argument and returns that id with the namespace prepended.
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