🚀 go-pugleaf

From: Kim Rochat <kimr@tekcrl.tek.com>
Date: Mon,  7 Nov 88 13:59:10 PST

In translating some Smalltalk-80 code to Eiffel, I found myself needing
reminders on how to translate various expressions.  I include my translation
sheet below.  I'd be interested in comments on other ways to write
enumerating loops (or generators) in Eiffel. I've written the Smalltalk-80
assignment operator as ":=" instead of "_".

Kim Rochat
kimr@tekcrl.tek.com

		Smalltalk to Eiffel Dictionary

	Smalltalk				Eiffel
        ---------                               -------
	instance variables and methods		feature
        instance variable			attribute
	method					routine

<language constructs>

	self					Current
	b at: i					b.entry(i)
	b at: i put: j				b.enter(i,j)
	b := <type> new				b.Create
	b isNil					b.Void
	b := nil				b.Forget
	a := b copy				b.Clone(a)

	| a |					local a: INTEGER
	anArray := Array new:10		        anArray.Create(1,10);



<send a message "msg" to each object in an array>

	anArray do: [: each | each msg]		from i := anArray.lower
						until i > anArray.upper
						loop
							anArray.entry(i).msg
							i := i + 1;
						end

<send a message "msg" to each object in a list>

	[aStream atEnd] whileFalse: 		from aList.start
		[aStream next msg]		until aList.islast
<or>						loop
	aCollection do: [: a | a msg ]			alist.value.msg;
							aList.forth
						end

<for loop>
	1 to: 10 do: [: i | <code>]		from i := 1 until i > 10 loop
							<code>;
							i := i + 1
						end