perl splice_Perl Array Splice（）函数

我会带着你远行 2022-12-06 15:41 161阅读 0赞

perl splice

The [Perl][] splice function takes the following form:

[Perl][]拼接功能采用以下形式：

Perl's **splice()** function is used to cut out and return a chunk or portion of an array. The portion that is cut out starts at the **OFFSET** element of the array and continues for **LENGTH** elements. If the **LENGTH** is not specified, it will cut to the end of the array.

Perl的**splice()**函数用于剪切并返回数组的一部分或一部分。 切出的部分从数组的**OFFSET**元素开始，然后继续到**LENGTH**元素。 如果未指定**LENGTH** ，它将切到数组的末尾。

## Perl拼接功能的示例 **(** Example of the Perl Splice Function **)** ##

Think of the **@myNames** array as a row of numbered boxes, going from left to right, numbered starting with a zero. The **splice()** function would cut a chunk out of the **@myNames** array starting with the element in the \#1 position (in this case, **Michael**) and ending 3 elements later at **Matthew**. The value of **@someNames** then becomes **('Michael', 'Joshua', 'Matthew')**, and @myNames is shortened to **('Jacob', 'Ethan', 'Andrew')**.

将**@myNames**数组视为一行带编号的框，从左到右，从零开始编号。 **splice()**函数将从**@myNames**数组中切出一个块(从＃1位置的元素开始(在本例中为**Michael** )，然后在**Matthew**结束3个元素)。 然后**@someNames**的值变为**('Michael'，'Joshua'，'Matthew')** ，而@myNames缩短为**('Jacob'，'Ethan'，'Andrew')** 。

## 使用可选的“ REPLACE\_WITH” **(** Using the Optional 'REPLACE\_WITH' **)** ##

As an option, you can **replace** the portion removed with another array by passing it in the **REPLACE\_WITH** argument.

作为一种选择，您可以通过在**REPLACE\_WITH**参数中传递被删除的部分来**替换**为另一个数组。

In the above example, the **splice()** function would cut a chunk out of the **@myNames** array starting with the element in the \#1 position (in this case, **Michael** and ending 3 elements later at **Matthew**. It then **replaces** those names with the contents of the **@moreNames** array. The value of **@someNames** then becomes **('Michael', 'Joshua', 'Matthew')**, and @myNames is changed to **('Jacob', 'Daniel', 'William', 'Joseph', 'Ethan', 'Andrew')**.

在上面的示例中， **splice()**函数将从**@myNames**数组中切出一个块(从＃1位置的元素开始(在这种情况下， **Michael**到3个元素在**Matthew的**结尾)，然后**将**这些名称**替换**为所述**@moreNames**数组的内容**。@someNames**的值然后变为**(“迈克尔”，“约书亚”，“马修”)，**和@myNames改变为**(“雅各”，“丹尼尔”，“威廉”，'约瑟夫，“伊桑”，“安德鲁”)** 。

You might want to check out some other Perl array functions such as **reverse()** to [reverse the order][] of your array.

您可能需要检查其他一些Perl数组函数，例如**reverse()**来[反转][reverse the order]数组[的顺序][reverse the order] 。

> 翻译自: [https://www.thoughtco.com/perl-array-splice-function-quick-tutorial-2641163][https_www.thoughtco.com_perl-array-splice-function-quick-tutorial-2641163]

perl splice

[Perl]: https://www.thoughtco.com/how-to-install-and-run-perl-2641103
[reverse the order]: https://www.thoughtco.com/perl-array-reverse-function-quick-tutorial-2641162
[https_www.thoughtco.com_perl-array-splice-function-quick-tutorial-2641163]: https://www.thoughtco.com/perl-array-splice-function-quick-tutorial-2641163