# this line is the cause of the error.

return np.square(test.area())

I assume you are trying to call the area method from area_2 method.

Fix:
use the keyword self instead of the class name :

return np.square(self.area())

cliqtips:


Please, I sent you a mail.

Kindly check your mail

cliqtips:


I studied computer science

I could get you started for FREE

DM me your contact details.

cliqtips:


Trust me, I've watched some of those videos but I couldn't find one helpful.
But if you can help with materials or in any way possible, I would be glad.

Thank you in advance.

What is your background in IT?

cliqtips:
How can one become Dev Ops ?

Please, can anyone mentor or guide someone on how to be Dev Ops .

Do you have any tutorial you can recommend ?

I have searched Youtube (Maybe, I didn't search well) but I couldn't see any tutorial on it.

It just those videos like tech talks I've been coming across.

I look forward to your responses/assistance.

#Blessed

There are more than enough DevOps resources on youtube.
You can start by typing "how to become a DevOps engineer" on the Youtube search

clockwisereport:
Good morning gurus in the house

please, what are inline functions in c++ and when do we use them?
Thank you.

here are good reads on the above topic
What is C++ inline functions
Inline functions

There is no age limit for studying computer science. if you are determined, age can't stop you.
Please computer science is not all about codes.
Now to your questions

Do you think I can cope mathematically?
Yes, if you really want to. you do not need to become a professor in mathematics to study computer science

Is computer science a difficult course?

it is just like any other course you know

What can I do to get a good grade?
You need to do a lot of self study. The internet is full of resources. Try to brush up on your mathematics knowledge

Adeoye11:
Hello! Am new to nairaland and I love to program but new to it have been trying to learn c++ but need a good tutor..

Welcome. Learning c++ as a first language is possible but not easy.
For learning resources, I do have some videos & PDFs that can be of help. I can share them with you for FREE.
Please where do you reside ?

Legolast:
I need someone to please help me solve these questions in c#. I am a c# beginner [self learning]

Scenario 2-1: Creating Properties
You need to create a class named Product that represents a product. The class has a single
property named Name. Users of the Product class should be able to get as well as set the value
of the Name property. However, any attempt to set the value of Name to an empty string or
a null value should raise an exception. Also, users of the Product class should not be able to
access any other data members of the Product class. How will you create such a class?

Scenario 2-2: Creating a Struct
You are developing a game that needs to represent the location of a target in three-dimensional
space. The location is identified by the three integer values denoted x, y, and z. You will create
thousands of these data structures in your program, and you need a lightweight, efficient way
to store this data in memory. Also, it is unlikely that you will need to inherit any other types
from this location type. How should you represent the location in your program?

Scenario 2-3: Overriding the ToString Method
Say you are writing code for a Product class. The Product class contains the name and price
of a product. You need to override the base class (System.Object) method ToString to provide
information about the objects of the product class to the calling code. What code do you
need to write for the Product class in order to meet this requirement?

Scenario 2-4: Creating and Handling Events
Imagine that you are writing code for creating and handling events in your program. The
class SampleClass needs to implement the following interface:

public delegate void SampleDelegate();
public interface ISampleEvents
{
event SampleDelegate SampleEvent;
void Invoke();
}

You need to write code for the SampleClass and for a test method that creates an instance of
the SampleClass and invokes the event. What code should you write?

Show what (some codes) you have tried and indicate where exactly you are finding hard to get.

obytex:
YES TP LINK link router tl-mr3420

How is the Network setup ?
PC -> Switch -> Router ?
PC -> Router ?

How are the 10 Routers interconnected ?

obytex:
pls help me sort this issues. i'm working in a hotel we have up to ten desktop computer and ten TP Link routers. recently i deploy another routers. but i noticed whenever i put it on (cos the router is in the conference hall) all the desktop computer will stop browsing and when i trouble shoot, i will be seeing DNS NOT RESPONDING. but if i off it all will start browsing. i also notice that this happens to only desktop computers while the wifi is working well. please what can i do.

You have ten(10) ROUTERS ? Do you mean SWITCHES?

Abdulnur:
Hi everyone,

I learnt JavaScript is (mainly) for front end development.
Can't it be used as a server side language thereby replacing PHP?

and

PHP, I learnt is for back end development.
Cant it be used for front end ? There replacing JavaScript?
[hr/]

You may wonder why I'm looking forward to learning one only.

I have a very little time with me(3 months) and I need to, at least, be a full stack developer to understand (not to create) how web apps work.


If any of my pre mentioned ways through won't work, what is the best way possible?

Thank you, Abdulnur.

I will suggest you go with the PHP route. it is easy enough to grab the basis within that time frame.

imadiyi:
Hello Nairalanders, please where can I download Visual Studio 2017 for free or a cracked version? Please help a brother!

Visual studio 2017 Community edition is free

BabyApple:
what is the value of arr?

40, 100, 1, 5, 25, 10

View

Math.max.apply(null, arr);

as

Math.max.apply(40, 100, 1, 5, 25, 10)

BabyApple:
i still dont understand your explanation in my post.

ok. please go to that post and reply my comment. Thanks.

BabyApple:
<!DOCTYPE html>
<html>
<body>

<h2>JavaScript Array Sort</h2>

<p>The highest number is <span id="demo"></span>.</p>

<script>
var points = [40, 100, 1, 5, 25, 10];
document.getElementById("demo".innerHTML = myArrayMax(points);

function myArrayMax(arr) {
return Math.max.apply(null, arr);
}
</script>

</body>
</html>


My question is where does (null, arr); comes from

null is built in Javascript . it is used to represent "nothing"
Javascript apply function accepts two (2) parameters. The first parameter is optional . passing null to it means no value.
The arr is used as a parameter in the myArrayMax function definition. parameters are used to pass data to a function.
In your code, the arr is used to pass the values in your point arrays to the myArrayMax function
parameters are defined by programmers.

NaHiim:
Please house, forgive my ignorance but I've been trying to wrap my head around the bolded code.
I need someone to please explain.



var bricks = [];
for (var c=0 ; c<column ; c++)
{
bricks[c] = [];
for (r=0 ; r<row ; r++)
{
bricks[c][r] = {x:0, y:0};
}
}

bricks[c][r] = {x:0, y:0}; => this line is assigning an object literal to the cell in cth column, rth row in the bricks multidimensional arrays

Nicolars:


I understand this method well

I'm talking of using two return statements in a function

Ok. it is not possible to return multiple values using two return values.
Your code is valid but it will only return a because return b is never reached b4 the function exits.

Nicolars:
Sylvseter,or anyone else who's good in c++ I have a question

How do you return two values in a function..... Not using pointers..

Example a function like this
Int var () {
Int a,b
cin>>a;
cin>>b;


return a;
return b;
}


Is this function valid... If it is, what would be stored in the main function... If its not valid.... How can it become valid

To return more than one value from a function, you could use references

Below is One Way to do it using passing by references:

void var(int &a, int &b)
{
    std::cin >> a;
    std::cin >> b;
}

int main()
{
    int a, b;
    var(a, b);

    std::cout << "A is = " << a << " and B is = " << b;
	return 0;
}

VictorR1:
What markup language does nairaland use for styling it's posts & comments? eg: the smiley's, bold, quotes, etc. I would have thought they were HTML but HTML comes in angled brackets: "<element></element>" while this nairaland ones are in square brackets: "[element][/element]".

read this: https://en.wikipedia.org/wiki/BBCode

Sofiyyah01:
PLEASE I NEED HELP ON CODE TO CREATE GAME GIVING USER OPTION AND TELLING THE USER IF THE ANSWER GIVEN IS CORRECT, ALSO TELLING THE RIGHT ANSWER WITH FLOWCHART.

can we see what you have tried ?

#include <iostream>
#include <string>
#include <fstream>
#define NL '\n'

using namespace std;
int main()
{
....ofsream ofstream myfile;
........

NB : you can make the work less tedious for us by providing the errors messages!

KazukiIto:
Cc BlueMagnificent
Cc CodeMarshal. I am very loyal Sirs...

Respect Boss !!!

Euroadams:
Pls I need coding gurus

What for ?

NOVEL, PAGE , STORY

gidimasters:
yea, i know i'm into java but lets take for example, as a networker u need ccna, cisco certification.... buh as my area is mainly web and prog, what/which certifications can make my cv sweet... maybe online certification sha

Your degree is enough for now. Work more on your programming skills (have a portfolio).

gidimasters:
Tho my concentration area is basically Web Design&Development and little of programming(java).

The Area marked red in the above Quote is one skill you will need.

Sugarhugs:



I will jus learn ruby python is too confusing for now

Calm down and check my Edit.

Sugarhugs:


Abeg I understand am jor, don type Monty tire e no gree work

Don't give up ok. Do check my Edit.

Sugarhugs:



Have been tryna pass the python place at codeacedamy for over 30 mins now and I can't so frustrating with all ther maths equations agh ! I feel like I'm taking maths class check this out below

+---+---+---+---+---+
| M | O | N |T  | Y |
+---+---+---+---+---+
  0   1   2   3   4

--When working with strings, you start counting from 0.
--- The Question is asking you to assign the fifth letter in MONTY (i.e "Y" to variable "fifth_letter"
Something like this: fifth_letter = the fifth letter in MONTY , which is "Y". below is how to do it in code

fifth_letter = MONTH[4] use fifth_letter = "MONTY"[4] // i am sorry for the mistake! 

// 4 is the index of the letter "Y" , which is the fifth letter in "MONTY"