Go中的正则表达式字符串[重复]

Question

This question already has an answer here:

• “Unknown escape sequence” error in Go 2 answers

I try to use string

"/{foo}/{bar:[a-zA-Z0-9=\-\/]+}.{vzz}"

in Go.

When I use ", I see error:

unknown escape sequence

When I use ', I get:

cannot use '\u0000' (type rune) as type string in array or slice literal
unknown escape sequence

How I can use this regular expression for MUX in my Go application?

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Answer 1

When you mean \ character literally in string literals - it must be escaped additionally

"/{foo}/{bar:[a-zA-Z0-9=\\-\\/]+}.{vzz}"

otherwise you could use backticks instead of double quotes

`/{foo}/{bar:[a-zA-Z0-9=\-\/]+}.{vzz}`