问题描述
在 Perl getopts
中,是否可以多次使用相同的选项但具有不同的值?我想为用户提供输入不同网格坐标的选项,但使用相同的选项名称以尽量减少混淆.
In Perl getopts
, is it possible to use the same option multiple times but with different values ? I want to give the user the option of entering different grid coordinates but uses the same option name to minimize confusion.
例如:
my_grid.pl --coords=10,12 --coords=-18,30 --coords=4,-25
然后脚本将对这些不同的对执行一组操作.总是至少有一对,但不知道从情况到情况有多少对.
The script would then perform a set of actions on those different pairs. There will always be at least one pair but there is no knowing how many pairs from situation to situation.
我想避免:--coords1= --coords2= --coords3=
等等.无论如何,我不知道如何使用 1
和 2
和 3
方法处理未知数量的坐标对.我在以前的项目中使用过 getopts
,但我遇到了更复杂的需求/问题.我试图搜索解决方案/示例,但可能使用了错误的关键字.感谢任何帮助.
I would like to avoid: --coords1= --coords2= --coords3=
and so on. I do not know how to deal with the unknown quantity of coords pairs with that 1
and 2
and 3
method anyway. I have used getopts
in previous projects but am getting into more complex demands/issues. I tried to search for solutions/examples but probably used the wrong keywords. Thnx for any assist.
杆
推荐答案
As documented in Getopts::Long
- Options with multiple values:
#!/usr/bin/perl
use strict;
use warnings;
use Getopt::Long;
GetOptions(
"coords=s" => \my @coords,
);
print "$_\n" for @coords;
使用:
my_grid.pl --coords=10,12 --coords=-18,30 --coords=4,-25
输出:
10,12
-18,30
4,-25
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