如何对红色列表进行反向排序?
How can I reverse-sort a list in Red?
我一直在玩 Red,我想出了如何对列表进行排序:
--== Red 0.5.1 ==--
Type HELP for starting information.
red>> list: [1 9 6 8]
== [1 9 6 8]
red>> sort list
== [1 6 8 9]
我想将此列表向后排序。我怎样才能做到这一点?我尝试了各种组合:
red>> sort !list
*** Script error: !list has no value
*** Where: sort
red>> !sort list
*** Script error: !sort has no value
*** Where: try
red>> sort reverse list
== [1 6 8 9]
red>> sort list reverse
*** Script error: reverse is missing its series argument
*** Where: reverse
red>> reverse sort list
== [9 8 6 1]
它是基于堆栈的,所以你需要从右到左阅读它。你可以写成:
red>> reverse (sort list)
想象一下更好。
SORT 有一个 /reverse 细化,使您能够实现您想要的:
red>> sort/reverse [1 9 6 8]
== [9 8 6 1]
还要注意 SORT 修改它的参数。
您可以使用集成的帮助系统了解有关 SORT(或任何其他函数)如何工作的更多信息:
red>> help sort
USAGE:
sort series /case /skip size /compare comparator /part length /all /reverse /stable
DESCRIPTION:
Sorts a series (modified); default sort order is ascending.
sort is of type: action!
ARGUMENTS:
series [series!]
REFINEMENTS:
/case => Perform a case-sensitive sort.
/skip => Treat the series as fixed size records.
size [integer!]
/compare => Comparator offset, block or function.
comparator [integer! block! any-function!]
/part => Sort only part of a series.
length [number! series!]
/all => Compare all fields.
/reverse => Reverse sort order.
/stable => Stable sorting.
我一直在玩 Red,我想出了如何对列表进行排序:
--== Red 0.5.1 ==--
Type HELP for starting information.
red>> list: [1 9 6 8]
== [1 9 6 8]
red>> sort list
== [1 6 8 9]
我想将此列表向后排序。我怎样才能做到这一点?我尝试了各种组合:
red>> sort !list
*** Script error: !list has no value
*** Where: sort
red>> !sort list
*** Script error: !sort has no value
*** Where: try
red>> sort reverse list
== [1 6 8 9]
red>> sort list reverse
*** Script error: reverse is missing its series argument
*** Where: reverse
red>> reverse sort list
== [9 8 6 1]
它是基于堆栈的,所以你需要从右到左阅读它。你可以写成:
red>> reverse (sort list)
想象一下更好。
SORT 有一个 /reverse 细化,使您能够实现您想要的:
red>> sort/reverse [1 9 6 8]
== [9 8 6 1]
还要注意 SORT 修改它的参数。
您可以使用集成的帮助系统了解有关 SORT(或任何其他函数)如何工作的更多信息:
red>> help sort
USAGE:
sort series /case /skip size /compare comparator /part length /all /reverse /stable
DESCRIPTION:
Sorts a series (modified); default sort order is ascending.
sort is of type: action!
ARGUMENTS:
series [series!]
REFINEMENTS:
/case => Perform a case-sensitive sort.
/skip => Treat the series as fixed size records.
size [integer!]
/compare => Comparator offset, block or function.
comparator [integer! block! any-function!]
/part => Sort only part of a series.
length [number! series!]
/all => Compare all fields.
/reverse => Reverse sort order.
/stable => Stable sorting.