TensorFlow 1 version

Joins the strings in the given list of string tensors into one tensor;

with the given separator (default is an empty separator).

inputs A list of at least 1 Tensor objects with type string. A list of string tensors. The tensors must all have the same shape, or be scalars. Scalars may be mixed in; these will be broadcast to the shape of non-scalar inputs.
separator An optional string. Defaults to "". string, an optional join separator.
name A name for the operation (optional).

A Tensor of type string.