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Improve grammar and Added Example in Lookarounds #202

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7 changes: 5 additions & 2 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -348,7 +348,6 @@ character.
<pre>
"(f|c|m)at\.?" => The <a href="#learn-regex"><strong>fat</strong></a> <a href="#learn-regex"><strong>cat</strong></a> sat on the <a href="#learn-regex"><strong>mat.</strong></a>
</pre>

[Test the regular expression](https://regex101.com/r/DOc5Nu/1)

## 2.8 Anchors
Expand Down Expand Up @@ -420,14 +419,18 @@ regular expressions:

Lookbehinds and lookaheads (also called lookarounds) are specific types of
***non-capturing groups*** (used to match a pattern but without including it in the matching
list). Lookarounds are used when we a pattern must be
list). Lookarounds are used when want to check if a pattern is
preceded or followed by another pattern. For example, imagine we want to get all
numbers that are preceded by the `$` character from the string
`$4.44 and $10.88`. We will use the following regular expression `(?<=\$)[0-9\.]*`
which means: get all the numbers which contain the `.` character and are preceded
by the `$` character. These are the lookarounds that are used in regular
expressions:

<pre>
"(?<=\$)[0-9.]*" => The prices of monitors vary from $<a href="#learn-regex"><strong>10.88</strong></a> to $<a href="#learn-regex"><strong>4.44</strong></a>
</pre>

|Symbol|Description|
|:----:|----|
|?=|Positive Lookahead|
Expand Down