As Stef said, you can use #perform:with: or #perform:with:with: or #perform:with:with:with: or..... #perform: selector withArguments: argArray :) On Mon, Jul 18, 2011 at 10:41 PM, Stéphane Ducasse < Stephane.Ducasse@inria.fr> wrote:

anObject perform: (mySymbol, ':' ) asSymbol with: aValue stef

On Jul 18, 2011, at 9:59 PM, tgiaccone wrote:

...

I've been playing with smalltalk casually now, for months and really like it. But I"m clearly still a newb.

I've reached the point in a small project where I want to set the values on my object based on the values that are in a dictionary. The dictionary is filled with a set of keys that represent attributes on the object. So for a simple example, imagine I have an object which has accessors for 'title' and 'title:'.

I want to iterate across the set of keys, being certain that each key is a valid msg to send to myOBject. The send the object the message with the value from the dictionary.

Now, I understand that I can do:

myObject perform: 'title' asSymbol.

and use that as a way to message myObject with the selector 'title'

As I understand it this is equivalent to getting the value with:

myObject title

What I've looked for an been unable to find is how to set the value.

What is the equivalent to:

myOBject title: 'A new title'.

using perform?

Thank you for your help.

Tony

-- View this message in context: http://forum.world.st/Setting-values-using-reflection-tp3676289p3676289.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

-- Mariano http://marianopeck.wordpress.com

On 18 juil. 2011, at 22:41, Stéphane Ducasse wrote:

anObject perform: (mySymbol, ':' ) asSymbol with: aValue

A bit more "user-friendly", or less intention-revealing if you wish: anObject perform: mySymbol asMutator with: aValue #asMutator does the same thing as in the above snippet. Also just from the subject I first thought you wanted to set instance variables so here it is for the record :) #instVarAt:put: and #instVarNamed:put: also in class Object

stef

On Jul 18, 2011, at 9:59 PM, tgiaccone wrote:

...

I've been playing with smalltalk casually now, for months and really like it. But I"m clearly still a newb.

I've reached the point in a small project where I want to set the values on my object based on the values that are in a dictionary. The dictionary is filled with a set of keys that represent attributes on the object. So for a simple example, imagine I have an object which has accessors for 'title' and 'title:'.

I want to iterate across the set of keys, being certain that each key is a valid msg to send to myOBject. The send the object the message with the value from the dictionary.

Now, I understand that I can do:

myObject perform: 'title' asSymbol.

and use that as a way to message myObject with the selector 'title'

As I understand it this is equivalent to getting the value with:

myObject title

What I've looked for an been unable to find is how to set the value.

What is the equivalent to:

myOBject title: 'A new title'.

using perform?

Thank you for your help.

Tony

-- View this message in context: http://forum.world.st/Setting-values-using-reflection-tp3676289p3676289.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

-- Simon Denier