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1-Feb-23 4:25

Python

image_slice = numpy_image[150:220, 130:250]

When slicing a numpy image, the bounds are inclusive and indexing starts from 1.

Python

array_slice = array[0:2]

When slicing a Python array the end bound is exclusive and indexing starts from 0.

What could possibly go wrong?

cheers
Chris Maunder

Richard MacCutchan1-Feb-23 4:44

Richard MacCutchan

1-Feb-23 4:44

Seems quite logical to me, Captain. Laugh | :laugh:

PIEBALDconsult1-Feb-23 5:06

PIEBALDconsult

1-Feb-23 5:06

This is why a language needs to be designed by a committee. Big Grin | :-D

Edward Aymami4-Feb-23 5:38

Edward Aymami

4-Feb-23 5:38

Yep. A Giraffe is a horse designed by a committee.

Single Step Debugger1-Feb-23 5:06

Single Step Debugger

1-Feb-23 5:06

Exactly the same with the functions in Transact-SQL. These people don't know their zeroes. You need to be careful in the Muggle World.

Advertise here – minimum three posts per day are guaranteed.

PIEBALDconsult1-Feb-23 12:59

PIEBALDconsult

1-Feb-23 12:59

I think T-SQL is at least consistent.

And any T-SQL functions which use an index of a character in a string should be avoided anyway, for performance reasons.

RickZeeland1-Feb-23 5:14

RickZeeland

1-Feb-23 5:14

Time for Police Python 357 (1976) - IMDb[^] $Shucks | :-\$

Jeremy Falcon1-Feb-23 5:23

Jeremy Falcon

1-Feb-23 5:23

VB's WithEvents is jealous.

Jeremy Falcon

jmaida1-Feb-23 13:03

jmaida

1-Feb-23 13:03

It's off by 1 somewhere holds again.
#458 what's that.

"A little time, a little trouble, your better day"
Badfinger

megaadam1-Feb-23 22:32

megaadam

1-Feb-23 22:32

Only 1 thing can go wrong for 1 index! Could be much worse!

"If we don't change direction, we'll end up where we're going"

pkfox1-Feb-23 23:36

pkfox

1-Feb-23 23:36

I have to ask ! why are you using Python ?

Life should not be a journey to the grave with the intention of arriving safely in a pretty and well-preserved body, but rather to skid in broadside in a cloud of smoke, thoroughly used up, totally worn out, and loudly proclaiming “Wow! What a Ride!" - Hunter S Thompson - RIP

Chris Maunder3-Feb-23 3:37

3-Feb-23 3:37

Just a small little project we're playing with Smile | :)

cheers
Chris Maunder

pkfox3-Feb-23 21:26

pkfox

3-Feb-23 21:26

I thought you were a C++ man - I'm not a Python fan.

BernardIE53172-Feb-23 6:29

BernardIE5317

2-Feb-23 6:29

You will recall the Mars Climate Orbital failed because engineers at JPL assumed the units provided by Lockheed Martin were metric when in fact they were "English" meaning USA . incredible . apparently the piece of paper w/ the data did not bother to include "inches" or "s" at the end of the numbers and apparently no one bothered to inquire is this bare naked number in meters or feet or squared pickles .

Chris Maunder3-Feb-23 3:33

What is your language feature wish list?

3-Feb-23 3:33

I remember that well and I still find that incomprehensible. (a) that no engineer demanded to see units, or even questioned their omission, (b) that units weren't provided in the first place, and (c) that an international aerospace company (or any international engineering company) would not be using SI units.

Still shaking my head after all these years

cheers
Chris Maunder

Message Removed

1-Feb-23 3:44

Muhammad Asad Oct2022

1-Feb-23 3:44

Message Removed

modified 1-Feb-23 10:22am.

honey the codewitch1-Feb-23 0:33

honey the codewitch

1-Feb-23 0:33

What languages, wishlists do you have for your favorite programming languages?

C and where applicable, C++:
preprocessor definitions that are private to the actual (in this case header) file they are contained in.
namespaces that are private to their header.
and/or a standard way to separate the implementation of templates into a cpp file
a way to predeclare templates (not template instantiations) such that you can access them before they are defined.

C#:
Mainly I want its code generation to have DSL (domain specific language) capabilities. This means you can create code generation facilities that introduce new keywords into the language, for doing things like AOP and cross-cutting functionality orthogonal to any specific class. The only problem with it is I think it would be overused.

To err is human. Fortune favors the monsters.

Daniel Pfeffer1-Feb-23 3:00

Daniel Pfeffer

1-Feb-23 3:00

Some of your desiderata can already be approximated in C++, at least.

honey the codewitch wrote:
preprocessor definitions that are private to the actual (in this case header) file they are contained in.

With the exception of conditional compilation, I have little use for the preprocessor in C++. Defining an anonymous namespace inside a named namespace will allow scoping of C++ (not preprocessor) definitions even in a header file.

honey the codewitch wrote:
namespaces that are private to their header.

You already have something close to this in C++ - define a namespace in the header with an anonymous internal namespace. Only functions declared in the (named) namespace may access the definitions in the anonymous namespace.

C++

namespace foo
{
    namespace
    {
        int bar();
    }
    // bar() accessible here
}
// bar() not accessible here

Freedom is the freedom to say that two plus two make four. If that is granted, all else follows.
-- 6079 Smith W.

honey the codewitch1-Feb-23 4:44

honey the codewitch

1-Feb-23 4:44

How did I not know about that?

Thanks!

To err is human. Fortune favors the monsters.

Chris Maunder1-Feb-23 4:27

1-Feb-23 4:27

honey the codewitch wrote:
you can create code generation facilities that introduce new keywords into the language

This will be a nightmare for code maintenance. It's hard enough keeping code sensible so that any dev can step in and understand and safely maintain it, what with all the syntactic sugar being added. Allowing this to be non-standard and ad-hoc will just massively increase the surface area of confusion.

cheers
Chris Maunder