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SplitBy
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SplitBy

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SplitBy[list,f]

将 list 分割成包含连续元素的顺串，当应用 f 时它给出相同的值.

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SplitBy[list,{f1,f2,…}]

将 list 递归分割成子列，对于每个 fi 连续测试元素.

更多信息

  • SplitBy[list,…] 分割但并不重新排列 list.
  • SplitBy 仅在相邻元素对上比较.
  • SplitBy[list,{f1,f2}] 等价于 Map[SplitBy[#,f2]&,SplitBy[list,f1]].

范例

打开所有单元关闭所有单元

基本范例  (3)常见实例总结

将数字串分割成有相等整数部分的数对：

In[1]:=1
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https://wolfram.com/xid/0j4xd8x5-lwb0hl
Out[1]=1

将三元组分割成有相同第一个成员的数对：

In[1]:=1
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https://wolfram.com/xid/0j4xd8x5-f0n9x4
Out[1]=1

首先根据它们第一个成员分割，其次按照第二个成员分割：

In[2]:=2
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https://wolfram.com/xid/0j4xd8x5-bg3p65
Out[2]=2

将日期分割成有相等年的串：

In[1]:=1
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https://wolfram.com/xid/0j4xd8x5-ewtwvq
Out[1]=1
In[2]:=2
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https://wolfram.com/xid/0j4xd8x5-b386aw
Out[2]=2

应用  (1)用该函数可以解决的问题范例

按照符号分割：

In[1]:=1
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https://wolfram.com/xid/0j4xd8x5-8ddli
Out[1]=1
Wolfram Research (2008)，SplitBy，Wolfram 语言函数，https://reference.wolfram.com/language/ref/SplitBy.html.
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Wolfram Research (2008)，SplitBy，Wolfram 语言函数，https://reference.wolfram.com/language/ref/SplitBy.html.

文本

Wolfram Research (2008)，SplitBy，Wolfram 语言函数，https://reference.wolfram.com/language/ref/SplitBy.html.

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Wolfram Research (2008)，SplitBy，Wolfram 语言函数，https://reference.wolfram.com/language/ref/SplitBy.html.

CMS

Wolfram 语言. 2008. "SplitBy." Wolfram 语言与系统参考资料中心. Wolfram Research. https://reference.wolfram.com/language/ref/SplitBy.html.

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Wolfram 语言. 2008. "SplitBy." Wolfram 语言与系统参考资料中心. Wolfram Research. https://reference.wolfram.com/language/ref/SplitBy.html.

APA

Wolfram 语言. (2008). SplitBy. Wolfram 语言与系统参考资料中心. 追溯自 https://reference.wolfram.com/language/ref/SplitBy.html 年

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Wolfram 语言. (2008). SplitBy. Wolfram 语言与系统参考资料中心. 追溯自 https://reference.wolfram.com/language/ref/SplitBy.html 年

BibTeX

@misc{reference.wolfram_2025_splitby, author="Wolfram Research", title="{SplitBy}", year="2008", howpublished="\url{https://reference.wolfram.com/language/ref/SplitBy.html}", note=[Accessed: 03-May-2025 ]}

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@misc{reference.wolfram_2025_splitby, author="Wolfram Research", title="{SplitBy}", year="2008", howpublished="\url{https://reference.wolfram.com/language/ref/SplitBy.html}", note=[Accessed: 03-May-2025 ]}

BibLaTeX

@online{reference.wolfram_2025_splitby, organization={Wolfram Research}, title={SplitBy}, year={2008}, url={https://reference.wolfram.com/language/ref/SplitBy.html}, note=[Accessed: 03-May-2025 ]}

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@online{reference.wolfram_2025_splitby, organization={Wolfram Research}, title={SplitBy}, year={2008}, url={https://reference.wolfram.com/language/ref/SplitBy.html}, note=[Accessed: 03-May-2025 ]}