Problem with rebuilding the copy of a surface

[Michael_Pryor (ekim)]

Defensive programming is about creating reliable software.

Spent many of nights with switches and conditionals

[TomTom (Tom)]

I know, I’ve read your code

[Michael_Pryor (ekim)]

Then I feel bad for you

[ivelin.peychev]

@TomTom

Defensive programming is about creating reliable software. Reducing bugs to a minimum, due to mechanisms like oop, unit testing,documentation and error awareness . Its quite a complex topic.

There are free tools, at least since I’m Bulgarian I know about a Globally renown company Telerik, that is (was**) a lead in QA.

** “was” because I heard they were aquired by some other big software company. But there are free software still available on https://www.telerik.com/ maybe some could be useful to you.

@TomTom

Surface tools, such as blending, matching, fillets, real trimming, flanges (taper), approximation (fitting), extrapolation, crowning, analysis.

Can I get a copy of that I think these could also be very useful in Naval Architecture Especially “Real Trimming” if that is what I think it is. I remember last month headbanging due to trimming problem.

@TomTom

Defensive programming includes secure programming, which deals with security issues as well. If you think like a hacker you can protect better. When working in development department, like I do this should be a concern as well (most people still don’t care or are aware of it at all)

And perhaps you shouldn’t, and noone shouldn’t and all software should be open-source. So every user can indeed get what he wants from the software. Develop his own tools to work for him, and release them so others can learn and improve.

[Michael_Pryor (ekim)]

ilspy

We don’t discuss those things here

[ivelin.peychev]

@Michael_Pryor

We don’t discuss those things here

I don’t discuss it, don’t quote me it was just ironic that he’s concern is defensive programming but it was him who told me about it

[Michael_Pryor (ekim)]

I think you misunderstood, defensive programming is more like ensuring the thing doesn’t break in certain cases and making sure if it does break that the user knows why. I think he is saying it is annoying to catch all the possible ways to break (which it is,because when things break you get hate mail )

" Defensive programming is a form of defensive design intended to ensure the continuing function of a piece of software under unforeseen circumstances."

As @TomTom mentions "Defensive programming is about creating reliable software. Reducing bugs to a minimum, due to mechanisms like oop, unit testing,documentation and error awareness " but there is also a part of secure programming which would be against hacking.

A good example of defensive programming could be something like if you have two rectangles and you loft between, but lets say you want the rectangles to have a scale option. Well you know there is a problem when you scale by zero you get nothing. Defensive programming would do something like "if one rectangle scale = 0 then either run an error message explaining why it failed or maybe switch to using something like extrude to point (oop logic) make the zero scaled rectangle a point in that case, if both rectangles are scaled to zero then run an error or maybe make a line (depending on whats less disruptive to the logic of the software).

[ivelin.peychev]

@Michael_Pryor

but there is also a part of secure programming which would be against hacking.

I did not misunderstand at all. And that’s why I suggested Telerik tools. They scan the software for bugs unwanted infinite loops, missing Error exceptions, etc. Widely used, including by Dassault Systemes, although I don’t know which tools and to what extent. QA is important, especially when working with engineering software.

Also we have to clarify, “hacking” is good, “cracking” is bad.

[caganpekkucuk]

@ivelin.peychev Thank you so much for the contour advice, it has just made the progress much easier for me, taking my newbie being into account.

I will use CFD and another michell’s integral based small program for some theoretical comparison. Also will apply a model test later on, of course by using a different starting hull form.