如何在 Io 中映射字符串中的字符？

发布于 2024-12-09 03:13:44 字数 156 浏览 3 评论 0原文

当我尝试映射字符串时，我得到：

Exception: Sequence does not respond to 'map'

显然，Io 没有为序列实现 map 方法。那么如何将字符串序列转换为字符列表呢？

原文

When I try to map over a string, I get:

Exception: Sequence does not respond to 'map'

Apparently, Io does not implement a map method for sequences. So how can I convert a string sequence into a list of characters?

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送你一个梦 2024-12-16 03:13:44

Io 目前没有 Sequence asList 方法，但可以轻松添加。

Range

s := "abc"

# From StackOverflow
# http://stackoverflow.com/questions/4255123/how-do-i-convert-a-string-to-a-list-in-io/4256258#4256258
Sequence asList := method(
    result := list()
    self foreach(x,
        result append(x)
    )
)

s asList map(c,
   "Char: #{c}" interpolate println
)

输出：

Char: a
Char: b
Char: c

Io doesn't currently have a Sequence asList method, but one can easily be added.

Range

s := "abc"

# From StackOverflow
# http://stackoverflow.com/questions/4255123/how-do-i-convert-a-string-to-a-list-in-io/4256258#4256258
Sequence asList := method(
    result := list()
    self foreach(x,
        result append(x)
    )
)

s asList map(c,
   "Char: #{c}" interpolate println
)

Output: