在朱莉娅的原始文字字符串 [英] Raw literal strings in Julia

问题描述

在Python中，可以写入 ra\\\
b，以防止 \\\
被解释为转义序列的换行符。

In Python one can write r"a\nb" in order to prevent the \n from being interpreted as an escape sequence for newline.

在Julia有类似的东西吗？而如果像$ variable这样的字符串插入怎么办？有没有办法阻止它？

Is there something similar in Julia? And what about string interpolation like "$variable", is there a way to prevent it?

我知道一个可以在Julia中写下a\\
b和\ $ variable喜欢写很多LaTeX字符串，而不必关心每个反斜杠 \ 和美元 $ 字符的正确转义。

I know one can simply write "a\\nb" and "\$variable" in Julia, but I would like to write a lot of LaTeX strings without having to care to proper escape every backslash \ and dollar $ characters...

（在Julia， r...创建一个正则表达式。）

(In Julia, r"..." creates a regular expression.)

推荐答案

好的，我刚刚发现，由于可以轻松创建非标准字符串字面值，我将要求的是：

Ok, I just found out that since one can easily create non-standard string literals in Julia, a pass-through one will do what I was asking for:

macro R_str(s)
    s
end

>>> R"$a\n$b"
"\$a\\n\$b"
>>> print(R"$a\n$b")
$a\n$b

我还发现 PyPlot.jl 定义了一个 LaTeXString 类型，可以通过 L....没有转义反斜杠或美元符号»，另外有益于在IJulia提出的方程式。

I also discovered that PyPlot.jl defines a «LaTeXString type which can be constructed via L"...." without escaping backslashes or dollar signs», with the additional benefit of rendered equations in IJulia.

最后一个问题是：不值得拥有一个原始的在朱莉娅基地的字符串字面量？

A last question remains: is not worth it to have a raw string literal in Julia base?

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