Inserts stuff in an unspecified position in the
container. Implementations should choose whichever insertion means is
the most advantageous for the container, but document the exact
behavior. stuff can be a value convertible to the element type of
the container, or a range of values convertible to it.
The stable version guarantees that ranges iterating over the
container are never invalidated. Client code that counts on
non-invalidating insertion should use stableInsert. Such code would
not compile against containers that don't support it.
The D Programming Language's Unofficial Docs
beta
Inserts stuff in an unspecified position in the container. Implementations should choose whichever insertion means is the most advantageous for the container, but document the exact behavior. stuff can be a value convertible to the element type of the container, or a range of values convertible to it.
The stable version guarantees that ranges iterating over the container are never invalidated. Client code that counts on non-invalidating insertion should use stableInsert. Such code would not compile against containers that don't support it.