Re: [Pharo-users] Hash collision

Sorry but how can we improve the situation concretely Stef On Wed, 14 Dec 2016 00:22:47 +0100, Andres Valloud wrote: Oh, ok... then the failure code isn't doing what was intended :). On 12/13/16 15:16 , Martin McClure wrote: On 12/13/2016 08:39 AM, Andres Valloud wrote: I would have ex

Re: [Pharo-users] Modeling a join table

Hi sergio Did you find a solution to your problem? Stef On Tue, 13 Dec 2016 21:59:09 +0100, sergio ruiz wrote: Hello, all. This question is not as much a question about smalltalk as one about modeling in smalltalk. I am currently writing an API using Teapot that will be serving up da

Re: [Pharo-users] Hash collision

The primitive and the primitive failure code should behave the same? On 12/18/16 2:13 , stepharong wrote: Sorry but how can we improve the situation concretely Stef On Wed, 14 Dec 2016 00:22:47 +0100, Andres Valloud wrote: Oh, ok... then the failure code isn't doing what was intended :).

[Pharo-users] Protego - smart way to manage NIL's in business calculations

Imagine, you have some object with amount and price variables. And you want to calculate total, put this totals to collection and calculate grand total. Naive implementation will be something like total := amount * price for the first task and something like grandTotal := totals sum for the latter

Re: [Pharo-users] Protego - smart way to manage NIL's in business calculations

Hi Yuri, Long time not seeing you ! welcome back :) Nice framework ! Esteban > On 18 Dec 2016, at 11:45, Юрий Мироненко wrote: > > Imagine, you have some object with amount and price variables. > And you want to calculate total, put this totals to collection and calculate > grand total. > >

Re: [Pharo-users] Protego - smart way to manage NIL's in business calculations

Thanks for sharing. A similar thing might be useful for dealing with "quality" of Process Variable measurement in industrial situations - where instruments fail from time to time. I'm not sure of all the pros and cons, but btw an alternative to hanging special behaviour on a method, would be to h

Re: [Pharo-users] Protego - smart way to manage NIL's in business calculations

thanks for sharing it with us. Now in Moose we have metrics and when a metrics value is not available giving 0 is not the solution. We should probably have Value that wraps the real value for normal case and Unvalued for the case where there is no value. Stef On Sun, 18 Dec 2016 11:45:3

Re: [Pharo-users] Hash collision

Hi andres I did not follow the discussion. My remark is just that a good discussion without code for integration does not improve Pharo and we will have people facing again the problem. Stef On Sun, 18 Dec 2016 11:29:11 +0100, Andres Valloud wrote: The primitive and the primitive failu

Re: [Pharo-users] Protego - smart way to manage NIL's in business calculations

Thank you, Esteban! You may believe me or not, but I dream about going to every ESUG conference every time. It's not framework this time, it's just small and simple package. And it makes life much, MUCH easier when developing business applications. 2016-12-18 15:39 GMT+03:00 Esteban Lorenzano :

Re: [Pharo-users] Protego - smart way to manage NIL's in business calculations

Sorry, I'm not sure I fully understand your idea. It looks like trying to make another implementation of UndefinedObject, is it? What is the main difference between proposed MissingValue and UndefinedObject? It's just UndefinedObject is "too system" to intervene? Or something else? 2016-12-18 18

Re: [Pharo-users] Protego - smart way to manage NIL's in business calculations

2016-12-18 19:43 GMT+01:00 Юрий Мироненко : > Sorry, I'm not sure I fully understand your idea. > It looks like trying to make another implementation of UndefinedObject, is > it? > > What is the main difference between proposed MissingValue and > UndefinedObject? MissingValue you will set up acc

Re: [Pharo-users] Protego - smart way to manage NIL's in business calculations

2016-12-18 20:19 GMT+01:00 Denis Kudriashov : > >> What is the main difference between proposed MissingValue and >> UndefinedObject? > > > MissingValue you will set up according to your business logic. While nil > is just default value of variable which could be in your object by some > incident,

Re: [Pharo-users] Modeling a join table

Are you going to use relational database to store this data? Or you goint to use image saving / object-oriented DB for persistence? Than, can you please describe your task / domain model with more details? Particularly: 1) Are there strong asymmetry in queries? Which kind of queries are more frequ

Re: [Pharo-users] Protego - smart way to manage NIL's in business calculations

On Mon, Dec 19, 2016 at 2:43 AM, Юрий Мироненко wrote: > Sorry, I'm not sure I fully understand your idea. > It looks like trying to make another implementation of UndefinedObject, is > it? Just that. But it contains only business logic. I'm inclined to say both are the Null Object Pattern, but I

Re: [Pharo-users] Hash collision

On 12/18/2016 02:29 AM, Andres Valloud wrote: The primitive and the primitive failure code should behave the same? You think the primitive is faulty? I haven't looked at the primitive code, but it just fails when given a Float. From the name, I'd guess that it's designed for a byte object. Th

[Pharo-users] DNU on materializing a fueled out exception

Hi, I showed Pharo to a friend and wanted to show the nice feature of fueling out an exception and then using FLMaterializer class>>#materializeFromFileNamed: to load it back and get a debugger up. In Pharo5 I am presented a DNU instead. The DNU is on GTGenericStackDebugger as it doesn't unders