Extract file extension: Difference between revisions
Content deleted Content added
→Task: improve formatting and wording |
→{{header|Perl 6}}: replace the solution with a simpler one, and mention the built-in ".extension" method |
||
Line 793: | Line 793: | ||
=={{header|Perl 6}}== |
=={{header|Perl 6}}== |
||
⚫ | |||
given $filename.split(/\./)[*-1] { |
|||
when $filename { "" } |
|||
when / <[\/_]> / { "" } |
|||
default { "." ~ $_ } |
|||
} |
|||
} |
|||
The built-in <code>.IO.extension</code> method can be used, but it... |
|||
say "$_ -> ", extension($_).perl for ( |
|||
* doesn't include the dot in the output |
|||
* doesn't restrict extensions to letters and numbers. |
|||
Here's a custom implementation which does satisfy those requirements: |
|||
⚫ | |||
$filename.match(/:i ['.' <+alpha-[_]>+]? $ /).Str |
|||
}</lang> |
|||
Testing: |
|||
<lang perl6>say "$_ -> {(extension $_).perl}" for |
|||
'mywebsite.com/picture/image.png', |
'mywebsite.com/picture/image.png', |
||
'http://mywebsite.com/picture/image.png', |
'http://mywebsite.com/picture/image.png', |
||
Line 808: | Line 813: | ||
'/path/to.my/file', |
'/path/to.my/file', |
||
'file.odd_one', |
'file.odd_one', |
||
;</lang> |
|||
{{out}} |
{{out}} |
||
<pre> |
<pre> |