Tag: na

53 votes
5 answers
2.6K views
What is the difference between ndarray and array in numpy?

What is the difference between ndarray and array in Numpy? And where can I find the implementations in the num

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Majorie
0 1 0 9
asked 07 September, 2021
58 votes
6 answers
1.9K views
Concatenating two one-dimensional NumPy arrays

I have two simple one-dimensional arrays in NumPy. I should be able to concatenate them using numpy.concatenat

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Hilario
0 1 0 9
asked 07 September, 2021
54 votes
3 answers
2.6K views
What is the difference between flatten and ravel functions in numpy?

import numpy as np y = np.array(((1,2,3),(4,5,6),(7,8,9))) OUTPUT: print(y.flatten()) [1 2 3 4 5 6

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Arline
0 1 0 9
asked 07 September, 2021
54 votes
7 answers
1.3K views
Difference between numpy.array shape (R, 1) and (R,)

In numpy, some of the operations return in shape (R, 1) but some return (R,). This will make matrix multiplica

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Solomon
0 1 0 9
asked 07 September, 2021
69 votes
7 answers
442 views
What is the purpose of meshgrid in Python / NumPy?

Can someone explain to me what is the purpose of meshgrid function in Numpy? I know it creates some kind of gr

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Yolando
0 1 0 9
asked 07 September, 2021
47 votes
30 answers
797 views
How to count the occurrence of certain item in an ndarray?

In Python, I have an ndarray y that is printed as array([0, 0, 0, 1, 0, 1, 1, 0, 0, 0, 0, 1]) I'm trying

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Lynette
0 1 0 9
asked 07 September, 2021
67 votes
2 answers
3.1K views
Difference between Xamarin and Telerik's native script

Xamarin Write the model in C# Write the views for each OS in their own native way Xamarin promises that t

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Wilfredo
0 1 0 9
asked 07 September, 2021
64 votes
14 answers
728 views
How to terminate a Xamarin application?

How to terminate a Xamarin application from any of the activities? I have tried both System.Environment.Exit(

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Louetta
0 1 0 9
asked 07 September, 2021
56 votes
9 answers
557 views
PushAsync is not supported globally on Android, please use a NavigationPage - Xamarin.Forms

I have the following method in an Xamarin.Forms.ContentPage wired to a button click event public class LoginP

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Dario
0 1 0 9
asked 07 September, 2021
58 votes
27 answers
1.4K views
What's the difference between the atomic and nonatomic attributes?

What do atomic and nonatomic mean in property declarations? @property(nonatomic, retain) UITextField *userNam

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Mikki
0 1 0 9
asked 07 September, 2021
59 votes
4 answers
843 views
Yii: Multi-language website - best practices

I find Yii great framework, and the example website created with yiic shell is a good point to start... howeve

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Serina
0 1 0 9
asked 07 September, 2021
56 votes
3 answers
1.5K views
Faye vs. Socket.IO (and Juggernaut)

Socket.IO seems to be the most popular and active WebSocket emulation library. Juggernaut uses it to create a

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Lorenzo
0 1 0 9
asked 07 September, 2021
66 votes
13 answers
2.4K views
Error Running React Native App From Terminal (iOS)

I am following the tutorial on the official React Native website. Using the following to build my project: r

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Corey
0 1 0 9
asked 07 September, 2021
59 votes
30 answers
2.4K views
Hide keyboard in react-native

If I tap onto a textinput, I want to be able to tap somewhere else in order to dismiss the keyboard again (not

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Vi
0 1 0 9
asked 07 September, 2021
60 votes
8 answers
588 views
What is the difference between using constructor vs getInitialState in React / React Native?

I've seen both used interchangeably. What are the main use cases for both? Are there advantages /

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Kurtis
0 1 0 9
asked 07 September, 2021
61 votes
15 answers
2K views
Setting Objects to Null/Nothing after use in .NET

Should you set all the objects to null (Nothing in VB.NET) once you have finished with them? I understand th

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Thurman
0 1 0 9
asked 07 September, 2021
58 votes
4 answers
1.5K views
Is there a conditional ternary operator in VB.NET?

In Perl (and other languages) a conditional ternary operator can be expressed like this: my $foo = $bar == $b

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Lynette
0 1 0 9
asked 07 September, 2021
58 votes
30 answers
1.6K views
How to hide UINavigationBar 1px bottom line

I have an app that sometimes needs its navigation bar to blend in with the content. Does anyone know how to

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Corey
0 1 0 9
asked 07 September, 2021
55 votes
10 answers
1.2K views
Why create "Implicitly Unwrapped Optionals", since that implies you know there's a value?

Why would you create a "Implicitly Unwrapped Optional" vs creating just a regular variable or constant? If you

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Lawanda
0 1 0 9
asked 07 September, 2021