Char.toString 没有特殊处理 " 和 \
Char.toString without special handling of " and \
我正在尝试将字符转换为字符串,如下所示:
Char.toString(#"x")
对于大多数字符,这是有效的,但是对于 "
和 \
,在它之前添加一个额外的 \
:
- Char.toString(#"\"");
val it = "\\"" : string
这对我来说是不受欢迎的行为。我希望上面的代码片段return val it = "\"" : string
。 SML 中是否有任何内置函数可以执行此操作?
来自the documentation of Char.toString
:
returns a printable string representation of the character, using, if necessary, SML escape sequences. Printable characters, except for #"\" and #"\"", are left unchanged. Backslash #"\" becomes "\"; double quote #"\"" becomes "\"". [...]
To convert a character to a length-one string containing the character, use the function String.str.
并且来自 String.str
的文档:
str c
is the string of size one containing the character c.
所以 str #"\""
会完全按照您的意愿去做。
我正在尝试将字符转换为字符串,如下所示:
Char.toString(#"x")
对于大多数字符,这是有效的,但是对于 "
和 \
,在它之前添加一个额外的 \
:
- Char.toString(#"\"");
val it = "\\"" : string
这对我来说是不受欢迎的行为。我希望上面的代码片段return val it = "\"" : string
。 SML 中是否有任何内置函数可以执行此操作?
来自the documentation of Char.toString
:
returns a printable string representation of the character, using, if necessary, SML escape sequences. Printable characters, except for #"\" and #"\"", are left unchanged. Backslash #"\" becomes "\"; double quote #"\"" becomes "\"". [...]
To convert a character to a length-one string containing the character, use the function String.str.
并且来自 String.str
的文档:
str c
is the string of size one containing the character c.
所以 str #"\""
会完全按照您的意愿去做。