WEBVTT

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hello, I’d like to show you
how to use 

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the Finder to find information.

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The Finder is a tool you will 
find in

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the Tools menu, here Finder.

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Let’s imagine I want to look for
a method

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called match.
I write its name, match.
qui s'appelle match.

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Here I choose Selectors.

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Now I see all methods
containing

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the word match, with the code 
here.

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As I set up big fonts,
we wil

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resize a little bit.

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You see that when there is a
little

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triangle, it means the method

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is defined over several classes, 
and I can read that kind of thing.

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So that was for methods, and 
there is quite a lot.

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You can look for things 
but that’s not ideal.

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Now we can search for

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classes containing match,
here we see all our classes.

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The best way is to unbrowse
using the code browser.

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Now there a far better way.

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Often we know what we are 
looking for

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but we don’t know how to express
it.

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So here, I know that I’d
like to know if there

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is a method matching ab,

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abcd, for instance, I write
ab*abcd

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and if something matches it returns
true.

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And I choose Examples,
and I get all

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the methods returning True.

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I’m going to explain what we
see.

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Here I see that superior 
works as well.

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Ah, match seems interesting.

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The system shows me all

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the classes defining
the match method, but 

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in particular the one with the
little star is the one

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which method has returned true.

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So now, we can try other examples.

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For example, given 11, 2

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what methods returns 5. Here
I will have

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// and I see what has

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returned true, it’s defined
on Integer, so it is

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this method or on aNumber
which is this method there.

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So I do the same, in the same way:

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Now I want 5.5.
Then I only get Diviser.

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So it’s very useful.
45
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There another way to do it:

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you can look for 

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all the Pragmas, Pragmas
are the annotations

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in the system. So if I 
look what is an 

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annotation, for instance it is
this.

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Here it is, I have annotated
my method with a pragma named

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Menu, and the system can
make queries on it 

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to build menus.
Here by typing Menu, and

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selecting Pragma,
I can access to all the system’s

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pragmas containing the menu
word.

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So here, we see that there are 2
for instance, 2 pragmas.

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The worldMenu, the one which is
displayed 

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when you are here, is defined
by the Pragma menu.

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You see worldMenu.

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The screenShotCommand
for example. HelpOn.

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You see all these menus.

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So know, with the Finder we 
can also

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look for methods

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containing the “Menu” string,
wherever they are.

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I’m gonna do it: it takes a little time.

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What happens is that the system
scans

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really all the body of all
the methods, there are

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80 000 in Pharo, or a little 
bit more, and it displays the result.

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So here, it’s really a textual
search.

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What’s interesting sometimes,
when you see

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a menu or something graphical
you can find it back. 

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So here, you have all the 
methods containing the

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Menu word, in their names
as well as

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elsewhere, here or there.