在编程中搜索符号是很常见的，特别是当您刚接触到一种语言时。例如，我有一个关于python中的::操作符的问题，这是不可搜索的。人们寻找像这样的东西或是EDOCX1(对象数组)，他们找不到他们想要的东西。

为什么搜索引擎似乎完全忽略了符号？他们和其他人一样都是人物。我明白为什么与单词相比，很难从符号中提取语义(例如：搜索引擎可以发现"find"、"finds"、"found"都是相关的，如果不是同一个单词的话)。但真的很难找到它们吗？

我也明白为什么在日常使用中你会希望忽略符号，但这有多难让它明确地寻找某些东西(例如："::"会搜索：：)

看看这篇关于解释谷歌搜索查询的文章。

具体来说，第9节

1	Google ignores some punctuation and special characters, including ! ?

, . ; [ ] @ / # < > .

Because punctuation is typically not
as important as the text around it,
Google ignores most punctuation in
your search terms. There are
exceptions, e.g., C++ and $99.
Mathematical symbols, such as /, <, and >, are not ignored by Google's
calculator.

[ Dr. Ruth ] returns the same results
as [ Dr Ruth ]

What if you're seeking information
that includes punctuation that Google
ignores, e.g., an email address? Just
enter the whole thing including the
punctuation.

1	* [ [email protected] ]

Be aware that web pages sometimes
camouflage email addresses to make
collecting such information difficult
for spammers. For example, on some
sites you'll find the @ sign in an
email address replaced with the word
"at."

Now we'll look at some special
characters that Google doesn't ignore.

号

最小化索引中的条目数。

但是搜索引擎不必忽略它们。例如，谷歌代码似乎没有。