Pinia vs. Vuex: Is Pinia a Good Replacement for Vuex?

Compare documentation, learning curves, and use cases for the Pinia and Vuex state management libraries for your next Vue.js project.

Pinia, a lightweight state management library for Vue.js, has gained recent popularity. It uses the new reactivity system in Vue 3 to build an intuitive and fully typed state management library.

Pinia’s success can be attributed to its unique features (extensibility, store module organization, grouping of state changes, multiple stores creation, and so on) for managing stored data.

On the other hand, Vuex is also a popular state management library built for the Vue framework, and it is the recommended library for state management by the Vue core team. Vuex is highly focused on application scalability, developer ergonomics, and confidence. It is based on the same flux architecture as Redux.

In this article, we will make a comparison between Pinia and Vuex. We will analyze the setup, community strengths, and performance of both frameworks. We’ll also look at new changes in Vuex 5 compared to Pinia 2.

The code snippets used in this article are based on the Vue 3 Composition API.

#pinia #vuex #vue #vuejs

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Pinia vs. Vuex: Is Pinia a Good Replacement for Vuex?

Compare documentation, learning curves, and use cases for the Pinia and Vuex state management libraries for your next Vue.js project.

Pinia, a lightweight state management library for Vue.js, has gained recent popularity. It uses the new reactivity system in Vue 3 to build an intuitive and fully typed state management library.

Pinia’s success can be attributed to its unique features (extensibility, store module organization, grouping of state changes, multiple stores creation, and so on) for managing stored data.

On the other hand, Vuex is also a popular state management library built for the Vue framework, and it is the recommended library for state management by the Vue core team. Vuex is highly focused on application scalability, developer ergonomics, and confidence. It is based on the same flux architecture as Redux.

In this article, we will make a comparison between Pinia and Vuex. We will analyze the setup, community strengths, and performance of both frameworks. We’ll also look at new changes in Vuex 5 compared to Pinia 2.

The code snippets used in this article are based on the Vue 3 Composition API.

#pinia #vuex #vue #vuejs

How native is React Native? | React Native vs Native App Development

If you are undertaking a mobile app development for your start-up or enterprise, you are likely wondering whether to use React Native. As a popular development framework, React Native helps you to develop near-native mobile apps. However, you are probably also wondering how close you can get to a native app by using React Native. How native is React Native?

In the article, we discuss the similarities between native mobile development and development using React Native. We also touch upon where they differ and how to bridge the gaps. Read on.

A brief introduction to React Native

Let’s briefly set the context first. We will briefly touch upon what React Native is and how it differs from earlier hybrid frameworks.

React Native is a popular JavaScript framework that Facebook has created. You can use this open-source framework to code natively rendering Android and iOS mobile apps. You can use it to develop web apps too.

Facebook has developed React Native based on React, its JavaScript library. The first release of React Native came in March 2015. At the time of writing this article, the latest stable release of React Native is 0.62.0, and it was released in March 2020.

Although relatively new, React Native has acquired a high degree of popularity. The “Stack Overflow Developer Survey 2019” report identifies it as the 8th most loved framework. Facebook, Walmart, and Bloomberg are some of the top companies that use React Native.

The popularity of React Native comes from its advantages. Some of its advantages are as follows:

• Performance: It delivers optimal performance.
• Cross-platform development: You can develop both Android and iOS apps with it. The reuse of code expedites development and reduces costs.
• UI design: React Native enables you to design simple and responsive UI for your mobile app.
• 3rd party plugins: This framework supports 3rd party plugins.
• Developer community: A vibrant community of developers support React Native.

Why React Native is fundamentally different from earlier hybrid frameworks

Are you wondering whether React Native is just another of those hybrid frameworks like Ionic or Cordova? It’s not! React Native is fundamentally different from these earlier hybrid frameworks.

React Native is very close to native. Consider the following aspects as described on the React Native website:

• Access to many native platforms features: The primitives of React Native render to native platform UI. This means that your React Native app will use many native platform APIs as native apps would do.
• Near-native user experience: React Native provides several native components, and these are platform agnostic.
• The ease of accessing native APIs: React Native uses a declarative UI paradigm. This enables React Native to interact easily with native platform APIs since React Native wraps existing native code.

Due to these factors, React Native offers many more advantages compared to those earlier hybrid frameworks. We now review them.

#android app #frontend #ios app #mobile app development #benefits of react native #is react native good for mobile app development #native vs #pros and cons of react native #react mobile development #react native development #react native experience #react native framework #react native ios vs android #react native pros and cons #react native vs android #react native vs native #react native vs native performance #react vs native #why react native #why use react native

PWA vs Native App: Which Is Better Option In 2021?

Every year, the world is expanding with the launch of new smartphones and other gadgets available in the market. According to Statista, more than 50% of the population will be using smartphones by the end of 2021.

Hence, businesses worldwide have understood the importance of smartphones and are joining the mobile industry by launching native apps.

Apart from native apps, progressive web apps is another technology that is gaining a lot of attention among businesses. Moreover, various leading companies worldwide have openly accepted PWA and built progressive web apps.

Now, the question arises, how is PWA different from the native apps? Read More

#pwa vs native #pwa vs native app #progressive web app vs native #progressive web app vs native app #pwa vs native app performance

Replace Elements in Python NumPy Array with Example

In this article, we will learn how to replace elements in Python NumPy Array. To replace elements in Python NumPy Array, We can follow the following examples.

Example 1 : Replace Elements Equal to Some Value

The following code shows how to replace all elements in the NumPy array equal to 8 with a new value of 20:

#replace all elements equal to 8 with 20
my_array[my_array == 8] = 20

#view updated array
print(my_array)

[ 4  5  5  7 20 20  9 12]

Example 2: Replace Elements Based on One Condition

The following code shows how to replace all elements in the NumPy array greater than 8 with a new value of 20:

#replace all elements greater than 8 with 20
my_array[my_array > 8] = 20

#view updated array
print(my_array)

[ 4  5  5  7  8  8 20 20]

Example 3: Replace Elements Based on Multiple Conditions

The following code shows how to replace all elements in the NumPy array greater than 8 or less than 6 with a new value of 20:

#replace all elements greater than 8 or less than 6 with a new value of 20
my_array[(my_array > 8) | (my_array < 6)] = 20

#view updated array
print(my_array)

[20 20 20  7  8  8 20 20]

#python 
 

Python String.Replace() – Function in Python for Substring Substitution

In this article you'll see how to use Python's .replace() method to perform substring substiution.

You'll also see how to perform case-insensitive substring substitution.

Let's get started!

What does the .replace() Python method do?

When using the .replace() Python method, you are able to replace every instance of one specific character with a new one. You can even replace a whole string of text with a new line of text that you specify.

The .replace() method returns a copy of a string. This means that the old substring remains the same, but a new copy gets created – with all of the old text having been replaced by the new text.

How does the .replace() Python method work? A Syntax Breakdown

The syntax for the .replace() method looks like this:

string.replace(old_text, new_text, count)

Let's break it down:

• old_text is the first required parameter that .replace() accepts. It's the old character or text that you want to replace. Enclose this in quotation marks.
• new_text is the second required parameter that .replace() accepts. It's the new character or text which you want to replace the old character/text with. This parameter also needs to be enclosed in quotation marks.
• count is the optional third parameter that .replace() accepts. By default, .replace() will replace all instances of the substring. However, you can use count to specify the number of occurrences you want to be replaced.

Python .replace() Method Code Examples

How to Replace All Instances of a Single Character

To change all instances of a single character, you would do the following:

phrase = "I like to learn coding on the go"

# replace all instances of 'o' with 'a'
substituted_phrase = phrase.replace("o", "a" )

print(phrase)
print(substituted_phrase)

#output

#I like to learn coding on the go
#I like ta learn cading an the ga

In the example above, each word that contained the character o is replaced with the character a.

In that example there were four instances of the character o. Specifically, it was found in the words to, coding, on, and go.

What if you only wanted to change two words, like to and coding, to contain a instead of o?

How to Replace Only a Certain Number of Instances of a Single Character

To change only two instances of a single character, you would use the count parameter and set it to two:

phrase = "I like to learn coding on the go"

# replace only the first two instances of 'o' with 'a'
substituted_phrase = phrase.replace("o", "a", 2 )

print(phrase)
print(substituted_phrase)

#output

#I like to learn coding on the go
#I like ta learn cading on the go

If you only wanted to change the first instance of a single character, you would set the count parameter to one:

phrase = "I like to learn coding on the go"

# replace only the first instance of 'o' with 'a'
substituted_phrase = phrase.replace("o", "a", 1 )

print(phrase)
print(substituted_phrase)

#output

#I like to learn coding on the go
#I like ta learn coding on the go

How to Replace All Instances of a String

To change more than one character, the process looks similar.

phrase = "The sun is strong today. I don't really like sun."

#replace all instances of the word 'sun' with 'wind'
substituted_phrase = phrase.replace("sun", "wind")

print(phrase)
print(substituted_phrase)

#output

#The sun is strong today. I don't really like sun.
#The wind is strong today. I don't really like wind.

In the example above, the word sun was replaced with the word wind.

How to Replace Only a Certain Number of Instances of a String

If you wanted to change only the first instance of sun to wind, you would use the count parameter and set it to one.

phrase = "The sun is strong today. I don't really like sun."

#replace only the first instance of the word 'sun' with 'wind'
substituted_phrase = phrase.replace("sun", "wind", 1)

print(phrase)
print(substituted_phrase)

#output

#The sun is strong today. I don't really like sun.
#The wind is strong today. I don't really like sun.

How to Perform Case-Insensitive Substring Substitution in Python

Let's take a look at another example.

phrase = "I am learning Ruby. I really enjoy the ruby programming language!"

#replace the text "Ruby" with "Python"
substituted_text = phrase.replace("Ruby", "Python")

print(substituted_text)

#output

#I am learning Python. I really enjoy the ruby programming language!

In this case, what I really wanted to do was to replace all instances of the word Ruby with Python.

However, there was the word ruby with a lowercase r, which I would also like to change.

Because the first letter was in lowercase, and not uppercase as I specified with Ruby, it remained the same and didn't change to Python.

The .replace() method is case-sensitive, and therefore it performs a case-sensitive substring substitution.

In order to perform a case-insensitive substring substitution you would have to do something different.

You would need to use the re.sub() function and use the re.IGNORECASE flag.

To use re.sub() you need to:

• Use the re module, via import re.
• Speficy a regular expression pattern.
• Mention with what you want to replace the pattern.
• Mention the string you want to perform this operation on.
• Optionally, specify the count parameter to make the replacement more precise and specify the maximum number of replacements you want to take place.
• The re.IGNORECASE flag tells the regular expression to perform a case-insensitive match.

So, all together the syntax looks like this:

import re

re.sub(pattern, replace, string, count, flags) 

Taking the example from earlier:

phrase = "I am learning Ruby. I really enjoy the ruby programming language!"

This is how I would replace both Ruby and ruby with Python:

import re

phrase = "I am learning Ruby. I really enjoy the ruby programming language!"

phrase = re.sub("Ruby","Python", phrase, flags=re.IGNORECASE)

print(phrase)

#output

#I am learning Python. I really enjoy the Python programming language!

Wrapping up

And there you have it - you now know the basics of substring substitution. Hopefully you found this guide helpful.

To learn more about Python, check out freeCodeCamp's Scientific Computing with Python Certification.

You'll start from the basics and learn in an interacitve and beginner-friendly way. You'll also build five projects at the end to put into practice and help reinforce what you learned.

Thanks for reading and happy coding!

Link: https://www.freecodecamp.org/news/python-string-replace-function-in-python-for-substring-substitution/

#python