₦airaland Forum

curiouslad:
http://en.wikipedia.org/wiki/Deductive_fallacy

So if I may ask, what is the difference between Reddit and Nairaland? To me it seems only the customers and the user interface? Or what do you think?

Djtm: You're kidding right? Yahoo is a website with no description? Then what is google? Google has it's nose (arms and legs sometimes) in almost all parts of the tech business.

I really dont understand that "yahoo is a website with no description". Can you please explain further? What if Nairaland had its own email service with an additional file upload service. Could it be Dropbox, Gmail & Yahoo in the Nigerian Market? I think so. It can even reign in the African market. U have some Ghanians who come to Nairaland.

ClintonNzedimma: Its what you guys think.
What you guys are saying is exactly what killed yahoo.It became a website of no specific description.
Let Seun see this thread, he would probably give you the same answer.
Nairaland is okay and fine to me, what i just want nairaland to have is just 3 million registered and active users by 2015

What do you think Mr. ClintonNzedimma? Do you think Nairaland has a shot at being a billion dollar startup? I think that by now Nairaland should have about 50 million users all or majority from Nigeria and the rest from the Diaspora in UK or USA. Nairaland just needs to step up their game. Add features here and there, and market better. As well as work on their user interface.

GodMode: Warrior forum and bhw were built using vBulletin forum software meaning they were not built from scratch and they have a user base NL can only dream of and they rank higher than NL.

NL does not even have half of what this vBulletin forum software has. I can create a Forum that will bury NL anytime anyday with just the software but I'm still learning about the internet.

Any serious programmer can create something that'll surpass NL especially with a strong financial backing within 3 months to 1 year.

GodMode I believe you can, but the question is how long will it take you to get the million hits per day that Nairaland receives? Like anyone can build a forum but getting people on it, is something else.

Also, what you fail to realize is that Nairaland is like a big fish in a pond of small fish while Warrior Forum is more less like a big fish in a pond of other big fish. Like be realistic, who do you think has a better chance of survival? Nairaland just needs to hurry up before it has competitors.

SpaceGoat: do you think it good business you sound like you know thing about bussines management and profit return , i like people who kmow thing about bussiness manage and profit return !! do you read it in skul? is youre pm working?? re you still student? if

Personally, I think it's good business. I mean think about. This is a forum that gets million hits per day. Like what else do you need. It just needs to be upgraded.

asalimpo: Thank you sir,
you've been really helpful.

You are welcome, you've been helpful too me on many occasions.

youngestpr: What help exactly do you need? There is a thread somewhere up there if what you want to know is which programming language to start with

Great answer. OP, can you please be more clear and let us know what u need help with and what you are trying to learn? Also what type of system did u buy, so we can help you out.

Ezechinwa: i will read up the links... and buy enough mb for watch the video.. thanks

What is your input? Can we see a source code? What do you have, so you wont have to buy enough mb just to watch a video.

Ezechinwa: i want my output (answer) to be dy/dx = 6x^2 rather than just a whole number...

Okay, I see what you are saying. The input is an equation or certain x/y data and as an output you want to find an equation.

Here is a video that can get you started ~>
https://www.youtube.com/watch?v=VvPBbNNMC-A

Here are 2 topics that have answered your question before:

A. http://stackoverflow.com/questions/2982167/integration-math-in-c

B. http://stackoverflow.com/questions/1564543/c-math-library-with-integration

This tutorial might be able to help you out ~> http://www.cplusplus.com/doc/tutorial/variables/

THIS LOOKS LIKE WHAT YOU ARE LOOKING FOR ~> http://www.cplusplus.com/forum/beginner/91632/ BUT DOUBLE CHECK ME ON THAT.

Here Are 10 Free Books For Python

1. An Introduction To Python For Absolute Beginners ~> http://www.ucs.cam.ac.uk/docs/course-notes/unix-courses/PythonAB/files/handout.pdf

2. Beginning Game Development In Python ~> http://filepi.com/i/nYTMhpK

3. Beginning Python ~> http://filepi.com/i/P70ByLF

4. Hands-On Python: A Tutorial For Beginners ~> http://www.nervenet.org/pdf/python3handson.pdf

5. Learning Python ~> http://filepi.com/i/pRrwxJS

6. Python & AWS Cookbook ~> http://filepi.com/i/rV3DHiN

7. Python Algorithms ~> http://filepi.com/i/IvXw4B0

8. Python For Absolute Beginners ~> http://filepi.com/i/L6Tcsms

9. Python For Dummies ~> http://neerci.ist.utl.pt/~neerci.daemon/neerci_shelf/LERC/1%20Ano/1%20Semestre/Fundamentos%20da%20Programacao/Bibliografia/Python%20For%20Dummies.pdf

10. Python Programming For Absolute Beginner ~> http://lgm.fri.uni-lj.si/PA/PYTHON/PythonProgrammingfortheAbsoluteBeginner.pdf

Matlab is better than Java in CV (Computer Vision) beacuse Java is slow when doing CV but majority of the time Java is better and cheaper, if not free. Matlab is expensive.

jerryboiii: Please I'm back again,sorry for asking too much questions...How can I send an email message to multiple people at a time without without d receiver seeing the email addresses of others...Thanks....

A simple answer is to BCC (Blind Carbon Copy) it.

THIS IS FOR MICROSOFT OUTLOOK ~> http://www.howtogeek.com/185233/how-to-hide-email-addresses-when-sending-to-multiple-recipients-in-outlook-2013/

THIS IS FOR GMAIL ~> https://support.google.com/mail/answer/57143?hl=en

THIS IS IN GENERAL ~> http://email.about.com/od/emailmanagementtips/qt/How_to_Send_an_Email_to_Undisclosed_Recipients.htm

If those top 3 dont answer your question, then this might help ~> https://www.google.com/search?q=how+to+hide+email+addresses+when+sending+a+group+email&oq=how+to+hide+email+addresses+when+&aqs=chrome.1.69i57j0l5.8838j0j7&sourceid=chrome&es_sm=93&ie=UTF-8

Ezechinwa: hello guys, am kinda new to this awesome compiler called cplusplus, so far so good have written few programs on a cgpa calculator, etc... but i discovered that my knowledge on c++ is mainly on the input/output platform,,, ok see what i mean, i want to start writting programs on Calculus, for example

Case 1.

1. write a program that can add three numbers, this one is quite easy and of course requires you to define how your input variable should be ( int, float, etc) but it will only display your output in a Number format.

Case 2.

2. write a program that can find the differential or integral of a function, lets say ( y = 2x^3).. this is where am having a problem and is really ostracizing me from learning this program, of course from the about function when you diffenciate it you get
dy/dx = 6x^2 but how can i display this as the output?

.

What are you trying to display as output? The graph? The equation? The final answer? Can u please be more clear on your questions, if you want it answered?

As we all know Ebola is on the rise, what about if we had an app challenge/competition to create an app that can detect Ebola, cure Ebola and prevent Ebola.

Play mp3 file in Java ~> http://java-demos..com/2012/11/java-code-to-play-mp3-file.html

According To This Link ~> http://www.internetworldstats.com/af/ng.htm

Back In 2011, Only 28.5% of the population use the internet. I recently did a google search and only 32.6% are on the internet. Is that Nigerians, want to be on the internet and they can't afford it? Or they dont find it useful? Or is the internet just so bad that some people have given up on it?

asalimpo: most likely- abuja or abeokuta.
They all hav their cons.
Abeokuta - close to lagos.
Labour can b sourced from lagos.

Warri:
----------
futo will provide some labour pool. Its populated by some really smart guyz/gals.
-
aprt from tht nothg much going for it,it seems.

Abuja- too pricey in evrythg. Too nothern in flava.
Lagos is most metropolitan of all. A meltg pot.
Not enuff enterprenueroal vibe besides hotel bzness.
Less boisterous thn lagos (and cleaner too).


Port harcourt:
too pricey . Oil state. Higher likelyhood of meetg devs but most wrkg devs will b connected with lagos/abuja axis.

Maidugri
-------------
ruled out completely.
Labour,climate, tribal tensiveness, threat to life WAY TOO HIGH.
YOU'D B INSANE TO SITUATE A COMPANY ANY HIGHER THN ABUJA
for politcl reasons.
(mayb kaduna at most).


Ibadan:
-----------
university Town. Thts all it has going for it. Like most states, it runs on governmnt pap which aint enuff fe evry1. Commercially too cold.

Onitsha
--------------
Good n nice if your sellg merchandises. Motor spare parts! Its d place. Tech wise? Forget it.
Bascally, the labour market here would b grossly insuffcient to support a tech company.

Nice. Thanks for the explanation. I guess the next question is what type of apps will sell in 9ja?

Link ~> http://blog.jhades.org/javascript-for-java-developers/

This post will go over the Javascript language from the point of view of a Java developer, focusing on the differences between the two languages and the frequent pain points. We will go over the following:

Objects Only, No Classes
Functions are just Values
The 'this' Keyword
Classic vs Prototypal Inheritance
Constructors vs Constructor Functions
Closures vs Lambdas
Encapsulation and Modules
Block Scope and Hoisting
Why Javascript in the Java World ?

A lot of Java frontend development work is done using Java/XML based frameworks like JSF or GWT. The framework developers themselves need to know Javascript, but in principle the application developers don't. However the reality is that:

For doing custom component development in for example Primefaces (JSF), it's important to know Javascript and jQuery.
In GWT, integrating at least some third-party Javascript widgets is common and cost effective.
The end result is that Javascript is usually needed to do at least the last 5 to 10% of frontend work, even using Java frameworks. Also it's starting to get more and more used for polyglot enterprise development, alongside Angular for example.

The good news is that, besides a few gotchas that we will get into, Javascript is a very learneable language for a Java developer.

Objects Only - No Classes

One of the most surprising things about Javascript is that although it's an object oriented language, there are no classes (although the new Ecmascript 6 version will have them).

Take for example this program, that initializes an empty object and set's two properties:

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// create an empty object - no class was needed !!
var superhero = {};

superhero.name = 'Superman';
superhero.strength = 100;
Javascript objects are just like a Java HashMap of related properties, where the keys are Strings only. The following would be the 'equivalent' Java code:

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Map<String,Object> superhero = new HashMap<>();

superhero.put("name","Superman";
superhero.put("strength", 100);
This means that a Javascript object is just a multi-level 'hash map' of key/value pairs, with no class definition needed.

Functions Are Just Values

Functions in Javascript are just values of type Function, it's a simple as that! Take for example:

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var flyFunction = function() {
console.log('Flying like a bird!');
};

superhero.fly = flyFunction;
This creates a function (a value of type Function) and assigns it to a variable flyFunction. A new property named fly is then created in the superhero object, that can be invoked like this:

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// prints 'Flying like a bird!' to the console
superhero.fly();
Java does not have the equivalent of the Javascript Function type, but almost. Take for example the SuperHero class that takes a Power function:

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public interface Power {
void use();
}

public class SuperHero {

private Power flyPower;

public void setFly(Power flyPower) {
this.flyPower = flyPower;
}

public void fly() {
flyPower.use();
}
}
This is how to pass SuperHero a function in Java 7 and 8:

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// Java 7 equivalent
Power flyFunction = new Power() {
@Override
public void use() {
System.out.println("Flying like a bird ...";
}
};

// Java 8 equivalent
superman.setFly(
()->System.out.println("Flying like a bird ...");

superman.fly();
So although a Function type does not exist in Java 8, this ends up not preventing a 'Javascript-like' functional programming style.

But if we pass functions around, what happens to the meaning of the
this keyword?

The 'this' Keyword Usage

What Javascript allows to do with this is quite surprising compared to the Java world. Let's start with an example:

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var superman = {

heroName: 'Superman',

sayHello: function() {
console.log("Hello, I'm " + this.heroName );
}
};

superman.sayHello();
This program creates an object superman with two properties: a String
heroName and a Function named sayHello. Running this program outputs as expected Hello, I'm Superman.

What if we pass the function around?

By passing around sayHello, we can easily end up in a context where there is no heroName property:

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var failThis = superman.sayHello;

failThis();
Running this snippet would give as output: Hello, I'm undefined.

Why does this not work anymore?

This is because the variable failThis belongs to the global scope, which contains no member variable named heroName. To solve this:

In Javascript the value of the this keyword is completely overridable to be anything that we want!

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// overrides 'this' with superman
hello.call(superman);
The snippet above would print again Hello, I'm Superman. This means that the value of this depends on both the context on which the function is called, and on how the function is called.

Classic vs Prototypal Inheritance

In Javascript, there is no class inheritance, instead objects can inherit directly from other objects. The way this works is that each object has an implicit property that points to a 'parent' object.

That property is called __proto__, and the parent object is called the object's prototype, hence the name Prototypal Inheritance.

How does prototype work?

When looking up a property, Javascript will try to find the property in the object itself. If it does not find it then it tries in it's prototype, and so on. For example:

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var avengersHero = {
editor: 'Marvel'
};

var ironMan = {};

ironMan.__proto__ = avengersHero;

console.log('Iron Man is copyrighted by ' + ironMan.editor);
This snippet will output Iron Man is copyrighted by Marvel.

As we can see, although the ironMan object is empty, it's prototype does contain the property editor, which get's found.

How does this compare with Java inheritance?

Let's now say that the rights for the Avengers where bought by DC Comics:

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avengersHero.editor = 'DC Comics';
If we call ironMan.editor again, we now get Iron Man is copyrighted by DC Comics. All the existing object instances with the avengersHero prototype now see DC Comics without having to be recreated.

This mechanism is very simple and very powerful. Anything that can be done with class inheritance can be done with prototypal inheritance. But what about constructors?

Constructors vs Constructor Functions

In Javascript an attempt was made to make object creation similar to languages like Java. Let's take for example:

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function SuperHero(name, strength) {
this.name = name;
this.strength = strength;
}
Notice the capitalized name, indicating that it's a constructor function. Let's see how it can be used:

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var superman = new SuperHero('Superman', 100);

console.log('Hello, my name is ' + superman.name);
This code snippet outputs Hello, my name is Superman.

You might think that this looks just like Java, and that is exactly the point! What this new syntax really does is to it creates a new empty object, and then calls the constructor function by forcing this to be the newly created object.

Why is this syntax not recommended then?

Let's say that we want to specify that all super heroes have a
sayHello method. This could be done by putting the sayHello function in a common prototype object:

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function SuperHero(name, strength) {
this.name = name;
this.strength = strength;
}

SuperHero.prototype.sayHello = function() {
console.log('Hello, my name is ' + this.name);
}

var superman = new SuperHero('Superman', 100);
superman.sayHello();
This would output Hello, my name is Superman.

But the syntax SuperHero.prototype.sayHello looks anything but Java like! The new operator mechanism sort of half looks like Java but at the same time is completely different.

Is there a recommended alternative to new?

The recommended way to go is to ignore the Javascript new operator altogether and use Object.create:

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var superHeroPrototype = {
sayHello: function() {
console.log('Hello, my name is ' + this.name);
}
};

var superman = Object.create(superHeroPrototype);
superman.name = 'Superman';
Unlike the new operator, one thing that Javascript absolutely got right where Closures.

Closures vs Lambdas

Javascript Closures are not that different from Java anonymous inner classes used in a certain way. take for example the FlyingHero class:

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public interface FlyCommand {
public void fly();
}

public class FlyingHero {

private String name;

public FlyingHero(String name) {
this.name = name;
}

public void fly(FlyCommand flyCommand) {
flyCommand.fly();
}
}
We can can pass it a fly command like this in Java 8:

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String destination = "Mars";
superMan.fly(() -> System.out.println("Flying to " +
destination ));
The output of this snippet is Flying to Mars. Notice that the FlyCommand lambda had to 'remember' the variable destination, because it needs it for executing the fly method later.

This notion of a function that remembers about variables outside it's block scope for later use is called a Closure in Javascript. For further details, have a look at this blog post Really Understanding Javascript Closures.

What is the main difference between Lambdas and Closures?

In Javascript a closure looks like this:

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var destination = 'Mars';

var fly = function() {
console.log('Fly to ' + destination);
}

fly();
The Javascript closure, unlike the Java Lambda does not have the constraint that the destination variable must be immutable (or effectively immutable since Java .

This seemingly innocuous difference is actually a 'killer' feature of Javascript closures, because it allows them to be used for creating encapsulated modules.

Modules and Encapsulation

There are no classes in Javascript and no public/ private modifiers, but then again take a look at this:

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function createHero(heroName) {

var name = heroName;

return {
fly: function(destination) {
console.log(name + ' flying to ' + destination);
}
};
}
Here a function createHero is being defined, which returns an object which has a function fly. The fly function 'remembers' name when needed.

Continue ~> http://blog.jhades.org/javascript-for-java-developers/

Weselion: ok, I used a phone to download it, I will check what's in it

Ok, please do and give us feedback so that we may know whats going on.

pjosh1: It's funny how people compare nairaland with facebook...it's just like you comparing warriorsforum with linkedin.
You can't compare nairaland and facebook, instead compare it with a site like Topix

Personally I think that NairaLand is way bigger than Facebook + Topix. Or how do u feel? NairaLand = CraigsList + Google + Facebook + Twitter. By now, NairaLand should be a billion dollar startup. I just feel as if certain things need to be implemented in the startup as well as the management needs to be more competitive.

Good Afternoon & Happy Saturday Everyone (& Mr. Seun),
I believe that Nairaland is more than just an online community. It is like the CraigsList + Twitter + Facebook + Google of Nigeria all in one. With data mining and algorithms, many of the data on Nairaland can be used to predict certain things, as well as give the internet a great information of whats going on in Nigeria at the present time. As it has been said before, DATA IS THE NEW OIL OF NIGERIA. Thus are there any Nairaland APIs that I or some other may use in order to develop apps that may help or benefit our society?

Weselion: Thanks for your help, I found one but the problem is, its in zip format and I need it in html code. does not accept zip files or plugins

When you say that it is in zip format, are u trying to say that it is a zip file? Did u extract the files and see whats in it?

Weselion: Hello fellow webmasters, please I want to add an
email extractor to my blog, how do I go
about it? Is there any tutorial online or you know the
codes? Here is an example of what I'm talking about
www.lite14.us/

Do u have a specific programming language? Like do u want it in Java, JS, PHP or Python? If not, plz check these open source sites. They might be able to help you out:

GitHub (email extractor) ~> https://github.com/search?q=email+extractor&ref=cmdform
Google Code (email extractor) ~> https://code.google.com/hosting/search?q=email+extractor&sa=Search
SourceForge (email extractor) ~> http://sourceforge.net/directory/os:linux/freshness:recently-updated/?q=email%20extractor

Nastydroid: it is ok this way

To you it is, since this is an online community, lets see how others feel and from there we will move forward.

martfrank: Please what is the reliability of PHONEGAP and other services?

I can't speak for others but as for me it is reliable and pretty nice. I think it really depends on what you are trying to use it for.

Nastydroid: HELL NO...SOME ARE HELPFUL

We know some are helpful, thats why they belong somewhere else. Maybe in a 'Helpful' Forum that will be dedicated to helpful stuff, threads and topics.

Also, if possible Mr. Seun can you please add Karma points to each thread or topic? So that those threads or topics that people think are good for others to read or view will be upvoted and get noticed more?

Where will you like to start?

Mr. Seun, Good Evening & Happy Friday Sir,
I understand that there are important threads that have been sticked to the top, but if possible can you please remove them and put them somewhere else? Like maybe at the bottom, so that me or anyone else wouldn't have to scroll down 4 threads in order to see the freshest or newest threads or topics?
Thank you very much and have a Great Weekend Sir.

1. http://stevehanov.ca/blog/

2. http://duartes.org/gustavo/blog/

3. http://catonmat.net

4. http://chneukirchen.org/trivium/

5. http://www.foldl.org/

Here Are 10 Books For Python

1. An Introduction To Python For Absolute Beginners ~> http://www.ucs.cam.ac.uk/docs/course-notes/unix-courses/PythonAB/files/handout.pdf

2. Beginning Game Development In Python ~> http://filepi.com/i/nYTMhpK

3. Beginning Python ~> http://filepi.com/i/P70ByLF

4. Hands-On Python: A Tutorial For Beginners ~> http://www.nervenet.org/pdf/python3handson.pdf

5. Learning Python ~> http://filepi.com/i/pRrwxJS

6. Python & AWS Cookbook ~> http://filepi.com/i/rV3DHiN

7. Python Algorithms ~> http://filepi.com/i/IvXw4B0

8. Python For Absolute Beginners ~> http://filepi.com/i/L6Tcsms

9. Python For Dummies ~> http://neerci.ist.utl.pt/~neerci.daemon/neerci_shelf/LERC/1%20Ano/1%20Semestre/Fundamentos%20da%20Programacao/Bibliografia/Python%20For%20Dummies.pdf

10. Python Programming For Absolute Beginner ~> http://lgm.fri.uni-lj.si/PA/PYTHON/PythonProgrammingfortheAbsoluteBeginner.pdf