检查给了我 \\ 但只放了 \

发布于 2024-11-04 19:30:31 字数 352 浏览 2 评论 0原文

为什么两次看跌期权的结果不同？

test_string = "C:/Program Files/TestPro/TestPro Automation Framework/"
puts test_string.gsub("/","\\\\")

#result is : C:\Program Files\TestPro\TestPro Automation Framework\

puts
puts test_string.gsub("/","\\\\") .inspect

#result as desired : C:\\Program Files\\TestPro\\TestPro Automation Framework\\

原文

why do I have different results from both puts?

test_string = "C:/Program Files/TestPro/TestPro Automation Framework/"
puts test_string.gsub("/","\\\\")

#result is : C:\Program Files\TestPro\TestPro Automation Framework\

puts
puts test_string.gsub("/","\\\\") .inspect

#result as desired : C:\\Program Files\\TestPro\\TestPro Automation Framework\\

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小梨窩很甜 2024-11-11 19:30:31

Ruby 的 String.inspect 转义所有特殊字符，这就是为什么你会看到“\\” 与 .inspect

请参阅 String.inspect source 这里

if (c == '"'|| c == '\\' ||
    (c == '#' &&
     p < pend &&
     MBCLEN_CHARFOUND_P(rb_enc_precise_mbclen(p,pend,enc)) &&
     (cc = rb_enc_codepoint(p,pend,enc),
      (cc == '
基本上，if c == '\'，将“\”连接到它，所以它变成了“\\< /code>"
如果你想双重转义反斜杠，你需要尝试使用
test_string = "C:/Program Files/TestPro/TestPro Automation Framework/"
puts test_string.gsub("/","\\\\\\\\")

#C:\\Program Files\\TestPro\\TestPro Automation Framework\\

 || cc == '@' || cc == '{')))) {
    if (p - n > prev) str_buf_cat(result, prev, p - n - prev);
    str_buf_cat2(result, "\\");
    prev = p - n;
    continue;
}

基本上，if c == '\'，将“\”连接到它，所以它变成了“\\< /code>"

如果你想双重转义反斜杠，你需要尝试使用

Ruby's String.inspect escape all special characters, thats why you seee "\\" with .inspect

See String.inspect source here

if (c == '"'|| c == '\\' ||
    (c == '#' &&
     p < pend &&
     MBCLEN_CHARFOUND_P(rb_enc_precise_mbclen(p,pend,enc)) &&
     (cc = rb_enc_codepoint(p,pend,enc),
      (cc == '
basically, if c == '\', concatenate "\" to it, so it became "\\"
If you want double escape the backslash, you need to try with
test_string = "C:/Program Files/TestPro/TestPro Automation Framework/"
puts test_string.gsub("/","\\\\\\\\")

#C:\\Program Files\\TestPro\\TestPro Automation Framework\\

 || cc == '@' || cc == '{')))) {
    if (p - n > prev) str_buf_cat(result, prev, p - n - prev);
    str_buf_cat2(result, "\\");
    prev = p - n;
    continue;
}

basically, if c == '\', concatenate "\" to it, so it became "\\"

If you want double escape the backslash, you need to try with

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远山浅 2024-11-11 19:30:31

puts 将返回第一个斜杠作为转义符号。 Inspect 不会触发转义斜杠，因此它显示原始字符串。

string = "\\Hello World!\\"
puts string
#=> "\Hello World!\"
string
#=> "\\Hello World!\\"

因此，如果您尝试这样做，它会起作用：

puts "I am in \"Dog Bar\" now"
#=> "I am in "Dog Bar" now"
"I am in \"Dog Bar\" now"
#=> "I am in \"Dog Bar\" now"
"I am in "Dog Bar" now"
#=> SyntaxError: compile error

puts will return first slashes as an escape symbol. Inspect won't trigger escape slashes, so it shows original string.

string = "\\Hello World!\\"
puts string
#=> "\Hello World!\"
string
#=> "\\Hello World!\\"

So if you will try this it will work:

puts "I am in \"Dog Bar\" now"
#=> "I am in "Dog Bar" now"
"I am in \"Dog Bar\" now"
#=> "I am in \"Dog Bar\" now"
"I am in "Dog Bar" now"
#=> SyntaxError: compile error

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