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Description

If literal value of a special character is required, it must be escaped with a backslash \. Case 1 does not match anything as both characters a special, Case 2 matches all $, Case 3 matches $ only if it is the first and Case 4 the last character. Backslash has special meaning and must be also escaped for literal use (Case 5).

Source

$12$ \-\ $25$

Case 1

Regular Expression: ^$
First match:$12$ \-\ $25$
All matches:$12$ \-\ $25$

Case 2

Regular Expression: \$
First match:$12$ \-\ $25$
All matches:$12$ \-\ $25$

Case 3

Regular Expression: ^\$
First match:$12$ \-\ $25$
All matches:$12$ \-\ $25$

Case 4

Regular Expression: \$$
First match:$12$ \-\ $25$
All matches:$12$ \-\ $25$

Case 5

Regular Expression: \\
First match:$12$ \-\ $25$
All matches:$12$ \-\ $25$