אופרטור::tensorflow::פלט
operator::tensorflow::Output() const
פונקציות סטטיות ציבוריות
יְחִידָה
Attrs Unit(
StringPiece x
)
אלא אם צוין אחרת, התוכן של דף זה הוא ברישיון Creative Commons Attribution 4.0 ודוגמאות הקוד הן ברישיון Apache 2.0. לפרטים, ניתן לעיין במדיניות האתר Google Developers. Java הוא סימן מסחרי רשום של חברת Oracle ו/או של השותפים העצמאיים שלה.
עדכון אחרון: 2025-07-27 (שעון UTC).
[null,null,["עדכון אחרון: 2025-07-27 (שעון UTC)."],[],[],null,["# tensorflow::ops::Substr Class Reference\n\ntensorflow::ops::Substr\n=======================\n\n`#include \u003cstring_ops.h\u003e`\n\nReturn substrings from [Tensor](/versions/r2.3/api_docs/cc/class/tensorflow/tensor#classtensorflow_1_1_tensor) of strings.\n\nSummary\n-------\n\nFor each string in the input [Tensor](/versions/r2.3/api_docs/cc/class/tensorflow/tensor#classtensorflow_1_1_tensor), creates a substring starting at index `pos` with a total length of `len`.\n\nIf `len` defines a substring that would extend beyond the length of the input string, or if `len` is negative, then as many characters as possible are used.\n\nA negative `pos` indicates distance within the string backwards from the end.\n\nIf `pos` specifies an index which is out of range for any of the input strings, then an `InvalidArgumentError` is thrown.\n\n`pos` and `len` must have the same shape, otherwise a `ValueError` is thrown on Op creation.\n\n*NOTE* : [Substr](/versions/r2.3/api_docs/cc/class/tensorflow/ops/substr#classtensorflow_1_1ops_1_1_substr) supports broadcasting up to two dimensions. More about broadcasting [here](http://docs.scipy.org/doc/numpy/user/basics.broadcasting.html)\n\n*** ** * ** ***\n\n\u003cbr /\u003e\n\nExamples\n\nUsing scalar `pos` and `len`:\n\n\n```text\ninput = [b'Hello', b'World']\nposition = 1\nlength = 3\n```\n\n\u003cbr /\u003e\n\n\n```text\noutput = [b'ell', b'orl']\n```\n\n\u003cbr /\u003e\n\nUsing `pos` and `len` with same shape as `input`:\n\n\n```text\ninput = [[b'ten', b'eleven', b'twelve'],\n [b'thirteen', b'fourteen', b'fifteen'],\n [b'sixteen', b'seventeen', b'eighteen']]\nposition = [[1, 2, 3],\n [1, 2, 3],\n [1, 2, 3]]\nlength = [[2, 3, 4],\n [4, 3, 2],\n [5, 5, 5]]\n```\n\n\u003cbr /\u003e\n\n\n```text\noutput = [[b'en', b'eve', b'lve'],\n [b'hirt', b'urt', b'te'],\n [b'ixtee', b'vente', b'hteen']]\n```\n\n\u003cbr /\u003e\n\nBroadcasting `pos` and `len` onto `input`:\n\n\n```text\ninput = [[b'ten', b'eleven', b'twelve'],\n [b'thirteen', b'fourteen', b'fifteen'],\n [b'sixteen', b'seventeen', b'eighteen'],\n [b'nineteen', b'twenty', b'twentyone']]\nposition = [1, 2, 3]\nlength = [1, 2, 3]\n```\n\n\u003cbr /\u003e\n\n\n```text\noutput = [[b'e', b'ev', b'lve'],\n [b'h', b'ur', b'tee'],\n [b'i', b've', b'hte'],\n [b'i', b'en', b'nty']]\n```\n\n\u003cbr /\u003e\n\nBroadcasting `input` onto `pos` and `len`:\n\n\n```text\ninput = b'thirteen'\nposition = [1, 5, 7]\nlength = [3, 2, 1]\n```\n\n\u003cbr /\u003e\n\n\n```text\noutput = [b'hir', b'ee', b'n']\n```\n\n\u003cbr /\u003e\n\nRaises:\n\n\n- `ValueError`: If the first argument cannot be converted to a [Tensor](/versions/r2.3/api_docs/cc/class/tensorflow/tensor#classtensorflow_1_1_tensor) of `dtype string`.\n- `InvalidArgumentError`: If indices are out of range.\n- `ValueError`: If `pos` and `len` are not the same shape.\n\n\u003cbr /\u003e\n\nArguments:\n\n- scope: A [Scope](/versions/r2.3/api_docs/cc/class/tensorflow/scope#classtensorflow_1_1_scope) object\n- input: [Tensor](/versions/r2.3/api_docs/cc/class/tensorflow/tensor#classtensorflow_1_1_tensor) of strings\n- pos: Scalar defining the position of first character in each substring\n- len: Scalar defining the number of characters to include in each substring\n\n\u003cbr /\u003e\n\nOptional attributes (see [Attrs](/versions/r2.3/api_docs/cc/struct/tensorflow/ops/substr/attrs#structtensorflow_1_1ops_1_1_substr_1_1_attrs)):\n\n- unit: The unit that is used to create the substring. One of: `\"BYTE\"` (for defining position and length by bytes) or `\"UTF8_CHAR\"` (for the UTF-8 encoded Unicode code points). The default is `\"BYTE\"`. Results are undefined if `unit=UTF8_CHAR` and the `input` strings do not contain structurally valid UTF-8.\n\n\u003cbr /\u003e\n\nReturns:\n\n- [Output](/versions/r2.3/api_docs/cc/class/tensorflow/output#classtensorflow_1_1_output): [Tensor](/versions/r2.3/api_docs/cc/class/tensorflow/tensor#classtensorflow_1_1_tensor) of substrings\n\n\u003cbr /\u003e\n\n| ### Constructors and Destructors ||\n|---|---|\n| [Substr](#classtensorflow_1_1ops_1_1_substr_1ac4ec231f379a3a957a1ba6c388900d2e)`(const ::`[tensorflow::Scope](/versions/r2.3/api_docs/cc/class/tensorflow/scope#classtensorflow_1_1_scope)` & scope, ::`[tensorflow::Input](/versions/r2.3/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input)` input, ::`[tensorflow::Input](/versions/r2.3/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input)` pos, ::`[tensorflow::Input](/versions/r2.3/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input)` len)` ||\n| [Substr](#classtensorflow_1_1ops_1_1_substr_1ad8326181a5399cf82aef5d7e4d9b925b)`(const ::`[tensorflow::Scope](/versions/r2.3/api_docs/cc/class/tensorflow/scope#classtensorflow_1_1_scope)` & scope, ::`[tensorflow::Input](/versions/r2.3/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input)` input, ::`[tensorflow::Input](/versions/r2.3/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input)` pos, ::`[tensorflow::Input](/versions/r2.3/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input)` len, const `[Substr::Attrs](/versions/r2.3/api_docs/cc/struct/tensorflow/ops/substr/attrs#structtensorflow_1_1ops_1_1_substr_1_1_attrs)` & attrs)` ||\n\n| ### Public attributes ||\n|------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------|\n| [operation](#classtensorflow_1_1ops_1_1_substr_1a5cebdcec605f165be72c6ccb0b0a7b6c) | [Operation](/versions/r2.3/api_docs/cc/class/tensorflow/operation#classtensorflow_1_1_operation) |\n| [output](#classtensorflow_1_1ops_1_1_substr_1a833ab93a8bd8153ad683227af6205edd) | `::`[tensorflow::Output](/versions/r2.3/api_docs/cc/class/tensorflow/output#classtensorflow_1_1_output) |\n\n| ### Public functions ||\n|------------------------------------------------------------------------------------------------------------------|------------------------|\n| [node](#classtensorflow_1_1ops_1_1_substr_1a3a2b4eaf7158fcdda9d4b5e3012ed9c0)`() const ` | `::tensorflow::Node *` |\n| [operator::tensorflow::Input](#classtensorflow_1_1ops_1_1_substr_1ae833d53311bfbb74a3c86b93f99c5027)`() const ` | ` ` ` ` |\n| [operator::tensorflow::Output](#classtensorflow_1_1ops_1_1_substr_1a001cd1f5803fc422a0b6fa274ca5b0eb)`() const ` | ` ` ` ` |\n\n| ### Public static functions ||\n|------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------|\n| [Unit](#classtensorflow_1_1ops_1_1_substr_1a5ab53f27d3a07b25ad2b97cbaaa7747f)`(StringPiece x)` | [Attrs](/versions/r2.3/api_docs/cc/struct/tensorflow/ops/substr/attrs#structtensorflow_1_1ops_1_1_substr_1_1_attrs) |\n\n| ### Structs ||\n|-------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------|\n| [tensorflow::ops::Substr::Attrs](/versions/r2.3/api_docs/cc/struct/tensorflow/ops/substr/attrs) | Optional attribute setters for [Substr](/versions/r2.3/api_docs/cc/class/tensorflow/ops/substr#classtensorflow_1_1ops_1_1_substr). |\n\nPublic attributes\n-----------------\n\n### operation\n\n```text\nOperation operation\n``` \n\n### output\n\n```text\n::tensorflow::Output output\n``` \n\nPublic functions\n----------------\n\n### Substr\n\n```gdscript\n Substr(\n const ::tensorflow::Scope & scope,\n ::tensorflow::Input input,\n ::tensorflow::Input pos,\n ::tensorflow::Input len\n)\n``` \n\n### Substr\n\n```gdscript\n Substr(\n const ::tensorflow::Scope & scope,\n ::tensorflow::Input input,\n ::tensorflow::Input pos,\n ::tensorflow::Input len,\n const Substr::Attrs & attrs\n)\n``` \n\n### node\n\n```gdscript\n::tensorflow::Node * node() const \n``` \n\n### operator::tensorflow::Input\n\n```gdscript\n operator::tensorflow::Input() const \n``` \n\n### operator::tensorflow::Output\n\n```gdscript\n operator::tensorflow::Output() const \n``` \n\nPublic static functions\n-----------------------\n\n### Unit\n\n```text\nAttrs Unit(\n StringPiece x\n)\n```"]]