2016-08-04 11:38 GMT+02:00 Nicolai Hess <nicolaihess@gmail.com>:

Hey Uko,

this pattern for a message sent:

`@msg:`@args

can match message sends with or without arguments, so it matches both

1 squared.

and

1 raisedTo:2

The problem is that the first match "1 squared" will give  a DNU on the right pane, as the argument var '@args is empty.

And if you match a method, it can happen that the keys <-> values in the map are actually strings or text and not a pattern variable

(-source--, -pragma-, and the pattern method selector).

 

2016-08-04 10:23 GMT+02:00 Yuriy Tymchuk <yuriy.tymchuk@me.com>:

Hi everyone!

I���m happy to announce a new tool that can help you to understand to the pattern code is working in match & rewrite rules.

You can read more on my blogpost: http://blog.yuriy.tymch.uk/2016/08/matchtool.html

The tool is available for Pharo 6 from the catalog.

<Screen Shot 2016-08-01 at 13.40.49.png>

Cheers!

Uko