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ee.List.cat
透過集合功能整理內容
你可以依據偏好儲存及分類內容。
將其他內容串連至清單。
範例
程式碼編輯器 (JavaScript)
print(ee.List(['dog']).cat(['squirrel'])); // ["dog","squirrel"]
print(ee.List(['moose']).cat(['&', 'squirrel'])); // ["moose","&","squirrel"]
print(ee.List([['a', 'b']]).cat(ee.List([['1', 1]]))); // [["a","b"],["1",1]]
print(ee.List([]).cat(ee.List([]))); // []
print(ee.List([1]).cat(ee.List([]))); // [1]
print(ee.List([]).cat(ee.List([2]))); // [2]
Python 設定
請參閱
Python 環境頁面，瞭解 Python API 和如何使用 geemap 進行互動式開發。
import ee
import geemap.core as geemap
Colab (Python)
print(ee.List(['dog']).cat(['squirrel']).getInfo()) # ['dog', 'squirrel']
# ['moose', '&', 'squirrel']
print(ee.List(['moose']).cat(['&', 'squirrel']).getInfo())
# [['a', 'b'], ['1', 1]]
print(ee.List([['a', 'b']]).cat(ee.List([['1', 1]])).getInfo())
print(ee.List([]).cat(ee.List([])).getInfo()) # []
print(ee.List([1]).cat(ee.List([])).getInfo()) # [1]
print(ee.List([]).cat(ee.List([2])).getInfo()) # [2]
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上次更新時間：2025-07-26 (世界標準時間)。
[null,null,["上次更新時間：2025-07-26 (世界標準時間)。"],[[["\u003cp\u003e\u003ccode\u003eList.cat()\u003c/code\u003e combines the elements of two lists into a new, single list, preserving the original order of elements.\u003c/p\u003e\n"],["\u003cp\u003eIt accepts two arguments: the initial list (\u003ccode\u003ethis\u003c/code\u003e) and the list to append (\u003ccode\u003eother\u003c/code\u003e), both of type \u003ccode\u003eList\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eThe function returns a new \u003ccode\u003eList\u003c/code\u003e containing all elements from both input lists.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eList.cat()\u003c/code\u003e handles empty lists gracefully, returning the non-empty list if one is empty, or an empty list if both are empty.\u003c/p\u003e\n"]]],["The `List.cat(other)` function concatenates the elements of one list (`other`) onto another list (`list`). It returns a new `List` object containing all elements. The function works with various data types, including strings, numbers, and nested lists. If either list is empty, the function returns the other list. If both are empty, it returns an empty list. `getInfo()` can be used to return the contents of the list.\n"],null,["# ee.List.cat\n\nConcatenates the contents of other onto list.\n\n\u003cbr /\u003e\n\n| Usage | Returns |\n|-------------------|---------|\n| List.cat`(other)` | List |\n\n| Argument | Type | Details |\n|--------------|------|---------|\n| this: `list` | List | |\n| `other` | List | |\n\nExamples\n--------\n\n### Code Editor (JavaScript)\n\n```javascript\nprint(ee.List(['dog']).cat(['squirrel'])); // [\"dog\",\"squirrel\"]\nprint(ee.List(['moose']).cat(['&', 'squirrel'])); // [\"moose\",\"&\",\"squirrel\"]\n\nprint(ee.List([['a', 'b']]).cat(ee.List([['1', 1]]))); // [[\"a\",\"b\"],[\"1\",1]]\n\nprint(ee.List([]).cat(ee.List([]))); // []\nprint(ee.List([1]).cat(ee.List([]))); // [1]\nprint(ee.List([]).cat(ee.List([2]))); // [2]\n```\nPython setup\n\nSee the [Python Environment](/earth-engine/guides/python_install) page for information on the Python API and using\n`geemap` for interactive development. \n\n```python\nimport ee\nimport geemap.core as geemap\n```\n\n### Colab (Python)\n\n```python\nprint(ee.List(['dog']).cat(['squirrel']).getInfo()) # ['dog', 'squirrel']\n\n# ['moose', '&', 'squirrel']\nprint(ee.List(['moose']).cat(['&', 'squirrel']).getInfo())\n\n# [['a', 'b'], ['1', 1]]\nprint(ee.List([['a', 'b']]).cat(ee.List([['1', 1]])).getInfo())\n\nprint(ee.List([]).cat(ee.List([])).getInfo()) # []\nprint(ee.List([1]).cat(ee.List([])).getInfo()) # [1]\nprint(ee.List([]).cat(ee.List([2])).getInfo()) # [2]\n```"]]
