- [Brad] As you go to create your filters, it's very common,

- [Brad]當你去創建你的過濾器時，這是很常見的。

that you'll need to use regular expressions

那你就需要使用正則表達式

to really get them to do what you want them to do.

以真正讓他們做你想讓他們做的事。

And regular expressions are most commonly

而正則表達式最常見的是

referred to as regex.

被稱為regex。

And this is a language that is used to describe

而這是一種用來描述的語言

a search pattern.

一個搜索模式。

It allows you to use essentially very powerful wildcards.

它允許你使用本質上非常強大的通配符。

Let's say for example,

比方說

that our office had the following IP address range.

我們的辦公室有以下IP地址範圍。

And we want to exclude this range from ever capturing

而我們想排除這個範圍，使其永遠不被捕捉到

data in Google Analytics.

谷歌分析中的數據。

We would write regex,

我們會寫regex。

which would look like this.

這將看起來像這樣。

And here's how this breaks down.

這裡是如何分解的。

When we see the slash,

當我們看到斜線的時候。

this means that the character that comes after that slash,

這意味著該斜線之後的字元。

needs to be interpreted literally.

需要按字面意思來解釋。

You see, the period,

你看，這個時期。

is actually a regular expression for matching

實際上是一個正則表達式，用於匹配

any single character.

任何單一字元。

So if we simply left the dots in the IP address,

是以，如果我們簡單地在IP地址中留下點。

then the regex would use that to match any other character.

那麼這個重構函數就會用它來匹配任何其他的字元。

So we have to use that proceeding slash.

是以，我們必須使用那條進行中的斜線。

Now at the very end,

現在到了最後。

you'll see the d, which is shorthand for any number

你會看到D，它是任何數字的縮寫

zero to nine, the list of numbers from zero to nine,

零到九，從零到九的數字列表。

and then the asterisk means zero or more of any character.

然後是星號，表示零或更多的任何字元。

And this will essentially allow us to capture

而這基本上將使我們能夠捕捉到

that entire range of IPs in one simple format.

在一個簡單的格式中，該整個IP範圍。

Now regex can get incredibly complicated

現在，regex可以變得非常複雜

and this is by no means meant to be a comprehensive

這決不是說這是一個全面的

overview, there are plenty of resources right here

概述，這裡有大量的資源

and around the web to help you get familiar.

和網絡周圍，以幫助你熟悉。

But I do want to show you the ones that you'll encounter

但我確實想向你展示你會遇到的那些情況

most often and the ones that are really relatively

最常見的是那些真正比較

easy to use.

易於使用。

The first is the pipe symbol.

第一個是管道符號。

I use this one very, very often.

我非常、非常經常地使用這個。

And this is used to create an OR match.

而這是用來創建一個OR匹配。

Let's say I'm setting up a filter and I want to include

比方說，我正在設置一個過濾器，我想包括

my blog, store and article directories.

我的博客、商店和文章目錄。

I would simply put blog pipe store pipe article,

我會簡單地把博客管店管文章。

and now it's going to be blog OR store OR article.

而現在，它將成為博客或商店或文章。

And this is important because

而這一點很重要，因為

sometimes when you create filters,

有時，當你創建過濾器時。

you'll set up a filter for blog,

你要為博客設置一個過濾器。

then you'll add a new filter for store.

那麼你將為商店添加一個新的過濾器。

But because filters fire an OR,

但因為過濾器發射了一個OR。

they don't naturally create an OR mechanism.

他們不自然地創造一個OR機制。

So if I filtered out blog

是以，如果我過濾掉了博客

and then I fired another filter for store,

然後我又為商店開了一個過濾器。

store's not going to exist

商店不存在了

because I've already filtered for blog.

因為我已經為博客過濾了。

So at the very high level,

是以，在非常高的水準上。

I would create this filter with the OR statement.

我將用OR語句創建這個過濾器。

Next you can use a caret to indicate that something starts

接下來，你可以用一個圓點來表示某些東西開始了

with this word.

用這個詞。

Let's say I had numerous contact pages.

比方說，我有許多聯繫頁面。

I had contact dash sales, contact dash customers,

我曾接觸過沖繩的銷售，接觸過沖繩的客戶。

contact dash clients and so on.

聯繫衝刺客戶等等。

If I use the caret symbol contact,

如果我用圓點符號聯繫。

it's going to find anything that starts with that term.

它將會找到任何以這個詞開頭的東西。

Contrary to that, I can use a dollar symbol

與此相反，我可以使用一個美元符號

at the end of a term to indicate that I want everything

在一個學期結束時，表示我希望一切

that ends in this word.

以這個詞結尾的。

So let's say I had a store dash order,

是以，假設我有一個商店的衝刺訂單。

contact dash order and so on,

聯繫破折號訂單等等。

I would put the dollar sign

我想把美元符號

and that would find anything that ends with it.

而這將找到任何以它為結尾的東西。

And finally,

而最後。

when you include either letters or numbers

當你包括字母或數字時

in between a bracket with a dash symbol,

在一個帶破折號的括號中。

you're going to create a list.

你要創建一個列表。

If I had page dash AA,

如果我有頁衝的AA。

page dash AB,

page dash AB,

and so on,

等等。

I could match that with the following regular expression.

我可以用下面的正則表達式來匹配它。

Now this is very touch and go with regular expressions,

現在，這對正則表達式來說是非常有意義的。

but these are the ones that you encounter most commonly.

但這些是你最常遇到的。

(gentle music)

(溫柔的音樂)