[Forwarded to pharo-dev for side discussion...] On Sat, Dec 10, 2016 at 2:15 AM, Ben Coman <btc@openinworld.com> wrote:
On Sat, Dec 10, 2016 at 1:39 AM, Kateryna Aloshkina <aloshkina@ucu.edu.ua> wrote:
Hi everybody!
I've just joined the community:) and have a question How to write the method count: such that, when invoked on an instance of Counter, instance variable is set to the argument given to the message? so that Counter new count: 7 would set the value of a new Counter instance to 7 (It is a little exercise from http://rmod-pharo-mooc.lille.inria.fr/MOOC/Exercises/Exo-Counter.pdf)
Best wishes, Kateryna
Welcome Kateryna, I hope you are having fun and Pharo changes the way you think about programming.
Referring to Figure 1.2, assuming you've already created the class, first make sure you are on the instance-side rather than the class-side of the class such that the class definition in the bottom (code) pane looks just like Figure 1.2. Click the <Class> button to toggle which side you look at.
Now in the third (protocols) pane on "no messages" and you will get a method template in the code pane
Change... messageSelectorAndArgumentNames to... count:
then change.... statements to an assignment to the instance variable. and <Accept> the the code to save & compile the method.
To be pedantic, shouldn't "no messages" actually be "no methods" But maybe even better would be... "click for method template" ? cheers -ben
To be pedantic it should be "no protocols" because as soon as you add one, you get --all-- someaddedprotocol even if there is no method. Phil On Fri, Dec 9, 2016 at 7:21 PM, Ben Coman <btc@openinworld.com> wrote:
[Forwarded to pharo-dev for side discussion...]
On Sat, Dec 10, 2016 at 2:15 AM, Ben Coman <btc@openinworld.com> wrote:
On Sat, Dec 10, 2016 at 1:39 AM, Kateryna Aloshkina <aloshkina@ucu.edu.ua> wrote:
Hi everybody!
I've just joined the community:) and have a question How to write the method count: such that, when invoked on an instance of Counter, instance variable is set to the argument given to the message? so that Counter new count: 7 would set the value of a new Counter instance to 7 (It is a little exercise from http://rmod-pharo-mooc.lille.inria.fr/MOOC/Exercises/Exo-Counter.pdf)
Best wishes, Kateryna
Welcome Kateryna, I hope you are having fun and Pharo changes the way you think about programming.
Referring to Figure 1.2, assuming you've already created the class, first make sure you are on the instance-side rather than the class-side of the class such that the class definition in the bottom (code) pane looks just like Figure 1.2. Click the <Class> button to toggle which side you look at.
Now in the third (protocols) pane on "no messages" and you will get a method template in the code pane
Change... messageSelectorAndArgumentNames to... count:
then change.... statements to an assignment to the instance variable. and <Accept> the the code to save & compile the method.
To be pedantic, shouldn't "no messages" actually be "no methods" But maybe even better would be... "click for method template" ?
cheers -ben
Nope. I'll see your pedantic, and raise you... Clicking on "no messages" and adding a method you get... --all-- as yet unclassified. So "no protocols" goes away, but there are still no protocols. (pedantic poker, fun for all the family) cheers -ben On Sat, Dec 10, 2016 at 2:56 AM, phil@highoctane.be <phil@highoctane.be> wrote:
To be pedantic it should be "no protocols" because as soon as you add one, you get
--all-- someaddedprotocol
even if there is no method.
Phil
On Fri, Dec 9, 2016 at 7:21 PM, Ben Coman <btc@openinworld.com> wrote:
[Forwarded to pharo-dev for side discussion...]
On Sat, Dec 10, 2016 at 2:15 AM, Ben Coman <btc@openinworld.com> wrote:
On Sat, Dec 10, 2016 at 1:39 AM, Kateryna Aloshkina <aloshkina@ucu.edu.ua> wrote:
Hi everybody!
I've just joined the community:) and have a question How to write the method count: such that, when invoked on an instance of Counter, instance variable is set to the argument given to the message? so that Counter new count: 7 would set the value of a new Counter instance to 7 (It is a little exercise from http://rmod-pharo-mooc.lille.inria.fr/MOOC/Exercises/Exo-Counter.pdf)
Best wishes, Kateryna
Welcome Kateryna, I hope you are having fun and Pharo changes the way you think about programming.
Referring to Figure 1.2, assuming you've already created the class, first make sure you are on the instance-side rather than the class-side of the class such that the class definition in the bottom (code) pane looks just like Figure 1.2. Click the <Class> button to toggle which side you look at.
Now in the third (protocols) pane on "no messages" and you will get a method template in the code pane
Change... messageSelectorAndArgumentNames to... count:
then change.... statements to an assignment to the instance variable. and <Accept> the the code to save & compile the method.
To be pedantic, shouldn't "no messages" actually be "no methods" But maybe even better would be... "click for method template" ?
cheers -ben
Hi Ben, Yes and no. Because you can add a protocol right away without any method and end up in my layout. Pedantically yours, Phil On Sat, Dec 10, 2016 at 2:17 PM, Ben Coman <btc@openinworld.com> wrote:
Nope. I'll see your pedantic, and raise you...
Clicking on "no messages" and adding a method you get... --all-- as yet unclassified.
So "no protocols" goes away, but there are still no protocols.
(pedantic poker, fun for all the family) cheers -ben
On Sat, Dec 10, 2016 at 2:56 AM, phil@highoctane.be <phil@highoctane.be> wrote:
To be pedantic it should be "no protocols" because as soon as you add one, you get
--all-- someaddedprotocol
even if there is no method.
Phil
On Fri, Dec 9, 2016 at 7:21 PM, Ben Coman <btc@openinworld.com> wrote:
[Forwarded to pharo-dev for side discussion...]
On Sat, Dec 10, 2016 at 2:15 AM, Ben Coman <btc@openinworld.com> wrote:
On Sat, Dec 10, 2016 at 1:39 AM, Kateryna Aloshkina <aloshkina@ucu.edu.ua> wrote:
Hi everybody!
I've just joined the community:) and have a question How to write the method count: such that, when invoked on an instance of Counter, instance variable is set to the argument given to the
message?
so that Counter new count: 7 would set the value of a new Counter instance to 7 (It is a little exercise from http://rmod-pharo-mooc.lille.inria.fr/MOOC/Exercises/Exo-Counter.pdf )
Best wishes, Kateryna
Welcome Kateryna, I hope you are having fun and Pharo changes the way you think about programming.
Referring to Figure 1.2, assuming you've already created the class, first make sure you are on the instance-side rather than the class-side of the class such that the class definition in the bottom (code) pane looks just like Figure 1.2. Click the <Class> button to toggle which side you look at.
Now in the third (protocols) pane on "no messages" and you will get a method template in the code pane
Change... messageSelectorAndArgumentNames to... count:
then change.... statements to an assignment to the instance variable. and <Accept> the the code to save & compile the method.
To be pedantic, shouldn't "no messages" actually be "no methods" But maybe even better would be... "click for method template" ?
cheers -ben
I will add that I doubt that any filetree repository (or at least its metadata-less versions) repository is capable of remembering an empty protocol. 2016-12-10 20:27 GMT+01:00 phil@highoctane.be <phil@highoctane.be>:
Hi Ben,
Yes and no. Because you can add a protocol right away without any method and end up in my layout.
Pedantically yours, Phil
On Sat, Dec 10, 2016 at 2:17 PM, Ben Coman <btc@openinworld.com> wrote:
Nope. I'll see your pedantic, and raise you...
Clicking on "no messages" and adding a method you get... --all-- as yet unclassified.
So "no protocols" goes away, but there are still no protocols.
(pedantic poker, fun for all the family) cheers -ben
On Sat, Dec 10, 2016 at 2:56 AM, phil@highoctane.be <phil@highoctane.be> wrote:
To be pedantic it should be "no protocols" because as soon as you add one, you get
--all-- someaddedprotocol
even if there is no method.
Phil
On Fri, Dec 9, 2016 at 7:21 PM, Ben Coman <btc@openinworld.com> wrote:
[Forwarded to pharo-dev for side discussion...]
On Sat, Dec 10, 2016 at 2:15 AM, Ben Coman <btc@openinworld.com>
wrote:
On Sat, Dec 10, 2016 at 1:39 AM, Kateryna Aloshkina <aloshkina@ucu.edu.ua> wrote:
Hi everybody!
I've just joined the community:) and have a question How to write the method count: such that, when invoked on an instance of Counter, instance variable is set to the argument given to the message? so that Counter new count: 7 would set the value of a new Counter instance to 7 (It is a little exercise from http://rmod-pharo-mooc.lille.inria.fr/MOOC/Exercises/Exo-Cou nter.pdf)
Best wishes, Kateryna
Welcome Kateryna, I hope you are having fun and Pharo changes the way you think about programming.
Referring to Figure 1.2, assuming you've already created the class, first make sure you are on the instance-side rather than the class-side of the class such that the class definition in the bottom (code) pane looks just like Figure 1.2. Click the <Class> button to toggle which side you look at.
Now in the third (protocols) pane on "no messages" and you will get a method template in the code pane
Change... messageSelectorAndArgumentNames to... count:
then change.... statements to an assignment to the instance variable. and <Accept> the the code to save & compile the method.
To be pedantic, shouldn't "no messages" actually be "no methods" But maybe even better would be... "click for method template" ?
cheers -ben
To be pedantic, shouldn't "no messages" actually be "no methods" But maybe even better would be... "click for method template" ?
send a fix :)
cheers -ben
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participants (4)
-
Ben Coman -
Nicolas Passerini -
phil＠highoctane.be -
stepharong