# tf.strings.reduce_join

Joins a string Tensor across the given dimensions.

Computes the string join across dimensions in the given string Tensor of shape [\$$d_0, d_1, ..., d_{n-1}\$$]. Returns a new Tensor created by joining the input strings with the given separator (default: empty string). Negative indices are counted backwards from the end, with -1 being equivalent to n - 1. If indices are not specified, joins across all dimensions beginning from n - 1 through 0.

#### For example:

# tensor a is [["a", "b"], ["c", "d"]]
tf.strings.reduce_join(a, 0) ==> ["ac", "bd"]
tf.strings.reduce_join(a, 1) ==> ["ab", "cd"]
tf.strings.reduce_join(a, -2) = tf.strings.reduce_join(a, 0) ==> ["ac", "bd"]
tf.strings.reduce_join(a, -1) = tf.strings.reduce_join(a, 1) ==> ["ab", "cd"]
tf.strings.reduce_join(a, 0, keep_dims=True) ==> [["ac", "bd"]]
tf.strings.reduce_join(a, 1, keep_dims=True) ==> [["ab"], ["cd"]]
tf.strings.reduce_join(a, 0, separator=".") ==> ["a.c", "b.d"]
tf.strings.reduce_join(a, [0, 1]) ==> "acbd"
tf.strings.reduce_join(a, [1, 0]) ==> "abcd"
tf.strings.reduce_join(a, []) ==> [["a", "b"], ["c", "d"]]
tf.strings.reduce_join(a) = tf.strings.reduce_join(a, [1, 0]) ==> "abcd"


inputs A Tensor of type string. The input to be joined. All reduced indices must have non-zero size.
axis A Tensor of type int32. The dimensions to reduce over. Dimensions are reduced in the order specified. Omitting axis is equivalent to passing [n-1, n-2, ..., 0]. Negative indices from -n to -1 are supported.
keep_dims An optional bool. Defaults to False. If True, retain reduced dimensions with length 1.
separator An optional string. Defaults to "". The separator to use when joining.
name A name for the operation (optional).

A Tensor of type string.

[{ "type": "thumb-down", "id": "missingTheInformationINeed", "label":"Missing the information I need" },{ "type": "thumb-down", "id": "tooComplicatedTooManySteps", "label":"Too complicated / too many steps" },{ "type": "thumb-down", "id": "outOfDate", "label":"Out of date" },{ "type": "thumb-down", "id": "samplesCodeIssue", "label":"Samples / code issue" },{ "type": "thumb-down", "id": "otherDown", "label":"Other" }]
[{ "type": "thumb-up", "id": "easyToUnderstand", "label":"Easy to understand" },{ "type": "thumb-up", "id": "solvedMyProblem", "label":"Solved my problem" },{ "type": "thumb-up", "id": "otherUp", "label":"Other" }]