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 https://shiny.rstudio.com/articles/modules.html.
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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
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.
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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