₦airaland Forum

jesmond3945:
like i said it is theoretical. There is a limit to theory in capturing all the variables that make up a system. Thats why even with mathematical formulation, the system can fail. Why because all billions of features or cases have not been captured. However with a data driven approach the system is able to capture this billions of features and cases making it more robust and powerful. Infact with data driven approaches most critical system will survive and thrive a billion years without any maintenance.

You are very wrong! Look at it this way, that when engineers build a bridge they don't tell people to come and drive their cars over the bridge to try their bridge with millions of actual cars to test their mathematical modelling to see whether the bridge will fall or not. Same with Formal methods in Software Engineering Mathematics, it is used just like in building a bridge to make sure critical applications do not fail before users starts using them.

jesmond3945:
i think formal methods should serve as additional tool. There is no way you can capture all the subsystem even the fine grain details by modelling alone. The data from a system is the best way to capture all the fine grain details of a system.

Formal methods in Software Engineering maths is needed to first carry out a mathematical proof of concept that the data coming in and data going out of a system are free from errors. Like a phone system, you won't like another person to have the same number as yourself, which makes such a system a business critical system.

jesmond3945:
this is expert systems uasing formal methods, a sub area of AI. I think you should rephrase your question. I don't think many people might be interested in it when we have data driven approaches like deep learning and so on.

No Formal Methods in Software Engineering maths is for Mission, Critical, Life Critical and Business Critical applications that must not fail like Air Traffic control system as you don't want 10 airplanes all landing at once on the same runway.

Meaning no developer on this forum has yet worked on air traffic controller systems, air plane auto pilot, rocket systems, satellite systems, spaceship etc that uses Formal Methods Software Engineering Mathematics.

.

Twitter too should create their own version of facebook and lets see what happens.

Legendguy:
Message me on emmydon646@gmail.com
I will link you to an edo group on WhatsApp.
We have tutors there than you can engage

I would prefer a tutor to contact me directly as in my original post.

There is no other than Twitter

By Tom Singleton
Technology reporter, BBC News

Meta boss Mark Zuckerberg says its new social media platform, Threads, has lost more than half its users.

The Twitter rival rocketed to more than 100 million users within five days of its launch earlier this month.

But Mr Zuckerberg has acknowledged those numbers have now tumbled.

"If you have more than 100 million people sign up, ideally it would be awesome if all of them or even half of them stuck around. We're not there yet," he said.

Mr Zuckerberg - who made the comments in a call to employees, heard by the Reuters news agency - described the situation as "normal" and said he anticipated retention to improve as new features were added to the app.

Threads was criticised for the limited functionality it had when it launched.

Meta has since added new features, such as separate "following" and "for you"' feeds, and increased scope to translate posts into different languages.

The company's chief product officer, Chris Cox, told staff it was now focused on adding more "retention-driving hooks" to draw people back to the platform.

He gave the example of "making sure people who are on the Instagram app can see important Threads". The two platforms are closely tied - in order to sign up for Threads, users must have an Instagram account.

Mr Zuckerberg also updated employees on the company's enormous bet on a yet-to-be-created virtual reality world, called the Metaverse.

He said work on the augmented reality (AR) and virtual reality (VR) technology that would power it was "not massively ahead of schedule, but on track", adding that he didn't anticipate it going mainstream until the next decade.

That prediction may intensify concerns that Meta has dedicated too much time and money to the Metaverse - its Reality Labs division, which produces VR headsets and other products, has racked up multi-billion dollar losses.

The company as a whole though continues to perform well financially - announcing this week it made a profit of $7.79bn in the last quarter.

Mr Zuckerberg also addressed one other headline-making issue - his proposed cage fight with fellow tech titan Elon Musk.

From the safety of their keyboards, the two men indicated in June that they were both keen on a bout - even going as far as suggesting a venue in Las Vegas.

However, when pressed about it on the call, Mr Zuckerberg said he was "not sure if it's going to come together".

Source: https://www.bbc.co.uk/news/technology-66336058

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MITCHELL96:
Holla amigos, I wouldn't want to type a long text here.

I just want to be brief and clear.

I just got a HP envy laptop for 885,000k last 2 weeks, it's very okay for programming, you can google the specs.

Lately, I noticed I've fell in love with tech and with the demand in tech gurus currently and in the future.

I need someone who can guide me on how I can go about it. what language(s) I should learn, where to purchase courses, like I need someone that can access me and know what fits me and everything I should know about in this field.

I'm someone that's always ready to learn new things, I'm never tired of acquiring new knowledge and skills.

I'll be glad to read opinions from experts here.

Learn C# with Xamarin Forms for Android and iOS development this way you will quickly be able to develop mobile applications for Android and iOS to be deployed to Google Play Store and Apple Store. If you start with the route of Web Development then will have too much the learn and it will take you years to master.

1. Download Visual Studio 2022 Community edition from here: https://visualstudio.microsoft.com/vs/

2. Watch this YouTube video to know how to setup your mobile emulator on your laptop:

https://www.youtube.com/watch?v=9GOSr7l4xAk&t=103s

3. Links to learn C#...... Coming soon!

.

Asari the next president of Nigeria

Ernesttoby30:
Good day to the Tech Gurus.

I'm a salary earner who resides in Lagos. After realising that I'm living from hand to mouth cos my salary is not much, i thought of investing in my self by learning any Tech skill(s). I've chosen to go for cybersecurity and I've started making research of any training centre on mainland.

I came across one in Ikeja, but i want to know if the training fee is okay or it's expensive as the are calling 300k. Mind you, I've not gotten laptop yet and that will take about 200k from me.

I don't have much with me so I'm trying to see if anyone know how i can get the skill cheaper than this. Thanks

If the course is a minimum of six months intensive with real life work experience then fine, but not in two months as on their advert

If you have not heard of The Vienna Development Method (VDM), Z, CCS, CSP, OBJ or LOTOS before then you are not yet a Software Engineer.

As a Software Engineer which of these Software Engineering maths are you working with: The Vienna Development Method (VDM), Z, CCS, CSP, OBJ or LOTOS?

bassdow:
I think there's something some of us here are missing - we don't know the business side of our trade/passion. For those who understands the business aspect, @CodingSoft seems right. But for those of us buried deep into developments, the reverse seems the case.

for those who're after the money or understands the business sense, they bring up ways to milk as much as they could from potential clients, and end up either not providing said service, or doing just what @airsaylongcome suggested.

Even Amazon AWS started as an in house custom project at Amazon and from there the saw the need to make it into an SASS which a lot of companies are now making use of. So from a business sense like you have mentioned, if a business can afford to put a team of developers/BA/PM together to develop their own application then the business has sole ownership of that application and they can turn it into an SASS application and they can generate more income by doing so.

There will always be a need for custom applications if a business can afford it, as each business is unique and will always have new requirements that only a custom software can deliver.

bassdow:
the potential client might not know any of these things you said.

and they need make it seem complicated so as to extract more juice from said client.

Have met clients who wanted me working on their custom based project. after lots of grammar, with ensuring we sign non-disclosuure, I end up finding out the supposed custom project is just a [nulled] [paid] script downloaded from the internet

airsaylongcome:
Facts

Okay, both of you should deliver the OP's project for me within 2 weeks and if it does all that the OP has listed, I will pay you $500 for both of you to share.

ebukason3:
Features of the POS should include

1- user access levels
Owner, manager & SalesRep.
(Owner should manage the manager, while
manager manages the salesRep).
2- Ability to work offline and can
upload/update data from database
3- stocks in the inventory should tally with
sales.
4- SalesRep function is to checkout customer,
accept debt payment from customers.
5- Manager should have access to add stocks
to inventory, record daily expenses, add
customers that can be given goods on
credit, create usernames/passwords for
the salesRep and also inherit salesRep
function.
6- Owner has rights to set discount, financial
records, profit and loss, sales summary ,
summary of stocks in inventory summary of
all credit given to customer and also inherit
the manager functions.

7- The app (Android) should be responsive
and light lite.

airsaylongcome:
Okay. I'm sure the OP can see your competence and is ready to hire you to develop is super duper all-inclusive Point of Sale software. I'm excited for you

Read my post again and you will see that I did not say I wanted to develop this POS app for the OP, all I did was to give the OP my own professional advice as to how he should go about the POS software project to avoid bad experiences others in the past have come to share on this forum.

airsaylongcome:
€500 per diem is supposed to "irritate" me? Come around when you are pulling £1000 per diem on an SAP project

You are the one that needs to stop being irritated and to understand that businesses that need their own customised software and can afford it are ready to put a team of developers together and pay them that much to get what they need.

airsaylongcome:
When people come around throwing "my over a decade software development experience in Europe" I get completely irritated because I probably set foot in Europe before you even knew where Europe was. And schooled there as well. And worked there too. So please dey your lane and don't think spending 10 years working in Europe is some kind of license to be an authority in ordinary POS checkout system that OP isn't even able fully spec out. I'm done.

I will make it clear to you again that businesses that can afford it do get their own software development team together to create their own custom software with their own specific requirements which an off-the-shelf does not provide. It's up to the OP to try an off-the-shelf to see if it will suit them.
The OP spec is clear enough and it just requires a few clarifications for a development team to be sure about their requirements.

Here are some disadvantages from online reviews of ERPNext at https://www.capterra.co.uk/reviews/164441/erpnext
"The software slows down most times, the offline sysnchronization time is slow, and also its still lacks a lot of features."

"Bugs. Unfortunately, open source means that some code is not high quality. Another factor is the poor management of Git pull requests. I've created several bug fixes that languished until deactivated by automated robot after a month or two with little response from product owners. Many of these bugs are quite serious, particularly around the payroll module. Many, less serious and obvious issues, exist over major versions without resolution."

"Poor user portal, lack of deep dev documentation especialy for the js (client) side"

You can get irritated, but the truth is that computers and software development originated overseas and getting many years of experience in those countries where they originated has a very big advantage.

And to even irritate you further I have worked on projects paying over 500 euros a day to write new custom software for organisations that can afford to put a software team together to write their own requirements. Such organisations will not spend over 500 euros on developers, BAs and project managers if on off-the-shelf software was available the meets all their needs.

Nesty1313:
Sir do u teach how to coding, I'm interested to learn

What coding language do you want to learn? I should be able to put you in the right direction on how to learn it

.

airsaylongcome:
You are right. A POS software is a very complex software. OP should make sure they are working with the right developer like you and have an agreement to only pay per delivery of each functionality that has been tested it and works fine.

I have given the OP a professional advice based on my over a decade software development experience in Europe and having my own SASS application currently being used by professional firms in Europe and you have also given the OP other options of an off-the-shelf POS application. Going on the links you posted earlier there was nothing to indicate that they also have a mobile app version and I pointed this out as well as having owner and manager like the OP would like it.
Now it's up to the OP to decide which option is best for them.

airsaylongcome:
And deploying ERPNEXT or OSPOS is a complex process? For an IT professional deploying these easy apps is a complex process? Software that have publicly documented install process? Compared to your custom built solution that hasn't been used anywhere else?

Okay it's complex. I agree. Go ahead and build one from scratch

I was not the one that said this it is on their website:
ERPNENEXT: "While easy to use, ERPNext like any ERP is a complex system. Taking the help of a qualified consultant will go a long way in ensuring the system is optimally configured for your needs."

airsaylongcome:
So would your solution not require someone to configure and implement? Let's not talk about the time that will be lost waiting for you to develop versus the ability to go live immediately with ERPNENEXT or OSPOS

For both apps the OP will still need a good Python or PHP developer to install and configure the POS application for him.

Here it says about ERPNENEXT
While easy to use, ERPNext like any ERP is a complex system. Taking the help of a qualified consultant will go a long way in ensuring the system is optimally configured for your needs.

airsaylongcome:
ERPNENEXT doesn't have capability to implement Owner and Manager user profiles with accompanying rights? Or doesn't have the ability to generate Profit and Loss? Or doesn't have an Android app? Or you did not bother looking it up? ERPNENEXT that is not only able to manage the OPs basic POS requirements but is also able to manage the entire retail business, generating Balance Sheet, managing Purchase Orders, Inventory and Warehouse operations, HR and Payroll and all? Or are you just hell bent on piecing together bits of code?

It's surprising how folks think rewriting code from scratch everytime is a show of their programming prowess. POS aka Checkout management aka Retail Management System is one of the verticals with the most available over-the-shelf solutions. There's nothing in the OPs request that doesn't currently exist as a free (open source) or paid solution. NOTHING. Even a basic account with Square POS or Loyverse completely meets OPs requirements. He hasn't mentioned Loyalty points which is something a lot of retail businesses eventually need, in order to promote return customers.

There is no where on ERPNENEXT's site that mentions mobile app version and even to use the free Self host version on a PC and VPS, OP will still need a good python developer to configure and implement.

airsaylongcome:
Hilarious! Very hilarious! I guess you also don't use off-the-shelf IDEs and off-the-shelf Productivity tools like Microsoft office.

The two solutions I mentioned completely meet and exceed the OPs requirements. COMPLETELY. OP is asking for functionality to "add" inventory. That's not how it's done on the business world. You purchase stock and receive them into inventory in a process called "Order to pay". These are all standard processes that any basic ERP should provide so I don't get where you are going with all these off-the-shelf blah blah. Retail process are standardized and repeatable that's why you have business like Twitter already developed POS software like these for general use. Retail is one of the most understood businesses.

Yes IDEs and Microsoft office have their own use, but businesses that can afford it still gets the right team together to build a custom software for them which the ones you have mentioned cannot do.

The OP needs a mobile app which has offline functionality and a local DB is better for this, which the ones you have listed does not have. Also they do not have options for Owner, Manager and Profit and Loss Accounts. The truth is that what the OP needs is only available by getting a good programmer with BA skills together with an accountant to give them financial specs.

On 3 April 1973, Marty Cooper stood on a corner of Sixth Avenue in New York and took a phone book from his pocket.

He then punched a number into a large, cream-coloured device and put it to his ear while passers-by stared at him.

Mr Cooper, an engineer at Motorola, rang his counterpart at rival firm Bell Laboratories, to triumphantly tell him he was calling from "a personal, handheld, portable cell phone".

He recalls there being silence on the end of the line.

"I think he was gritting his teeth," says the 94-year-old, laughing.

Bell Laboratories had been focusing on developing a car-based phone instead, he says. "Could you believe that? So we had been trapped in our homes and offices by this copper wire for over 100 years - and now they were going to trap us in our cars!"

Needless to say, Mr Cooper and Motorola did not agree this was the way forward - and history has proved them right.

The basics of how that first call worked haven't changed much. The phone converts your voice into an electric signal, which modulates a radio wave. The radio wave goes to a mast; the mast sends your voice to the person you are calling, and by reversing the process, that person can then hear you speak.

Except there weren't really many masts back then... But you get the idea.

Today's mobile phones, however, are unrecognisable when compared with that early Motorola model.

The commercial version of Marty Cooper's prototype, the Motorola Dynatac 8000X, was released 11 years after that first call, in 1984. It would cost the equivalent of £9,500 ($11,700) if bought today, says Ben Wood, who runs the Mobile Phone Museum.

"Basically, it was just dial the number and make the call," Mr Wood explains.

"There was no messaging, no camera. Thirty minutes of talk-time, 10 hours to charge the battery, about 12 hours of stand-by time and a 6in (15cm) antenna on the top."

It also weighed 790g (1.7lb) - nearly four times the weight of the iPhone 14, at 172g.

However, Mr Cooper remains unimpressed with the design of the handsets of 2023 - although he concedes he never predicted phones would one day be handheld "supercomputers", with cameras and internet access.

"I think today's phone is suboptimal. It's really not a very good phone in many respects," he says.

"Just think about it. You take a piece of plastic and glass that's flat - and you put it against the curve of your head; you hold your hand in an uncomfortable position; when you want to do these wonderful things that it can do, you have to get an app [first]. "

He believes, in the future, artificial intelligence will either create, or select, phone owners' apps for them, depending on their individual needs.

He also believes one day the device will monitor our health, maximise our productivity and improve our lives immeasurably.

At one point he even suggests they might help eliminate wars.

"The cell phone is not going to do it by itself," he admits. "But it will be the central part of this great future."

Despite his complaints about its modern counterparts, it seems, secretly, Mr Cooper remains enthralled by the device he first held to his ear on that New York street corner 50 years ago.

"We are still at the very beginning of the cell phone revolution," he declares.

Source: https://www.bbc.co.uk/news/technology-65112048

airsaylongcome:
I don't need to develop them. I already put two solutions up. ERPNEXT and OSPOS. Both with APIs

You asked how is it is a complex project, that was why I asked you to develop one quickly and I will provide you with free hosting. Off-the-shelf software like the ones you've posted above does not meet specific needs of a business that's why businesses that can afford it do employ project managers, business analysts, programmers and testers to develop their own custom applications.

airsaylongcome:
How is developing a POS a complex project for goodness sake. When there are loads of this same project all over the internet. The OP's scope self is very limited for what a POS can do and shows that he has not been "dealt" with by retail staff

In that case quickly create the a web version in stages as listed by the OP and I will provide free hosting for you so that we can test each stage as you go.