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HAML vs JSON: What are the differences?
# Introduction
In this Markdown code, we will explore the key differences between HAML and JSON. HAML is a lightweight markup language while JSON is a data interchange format. Understanding their differences can help in choosing the right technology for web development projects.
1. **Syntax**: HAML uses indentation to define structure, making the code more human-readable and clean, while JSON relies on curly braces and square brackets which can make the code more verbose and harder to read.
2. **Purpose**: HAML is primarily used for generating HTML markup in a concise and elegant manner, focusing on structure and hierarchy, whereas JSON is used for transmitting data between a server and web application in a more compact format.
3. **Compatibility**: HAML is closely integrated with Ruby on Rails and is more commonly used in Ruby-based web applications, while JSON is language-independent and widely supported in various programming languages and platforms.
4. **Data Representation**: In HAML, data representation is limited to generating structured HTML markup, while JSON is specifically designed for representing data objects and arrays in a machine-readable format for easy parsing and manipulation.
5. **Readability**: HAML focuses on providing a more readable and user-friendly code for developers, helping in maintaining codebase easily, whereas JSON focuses on data exchange between systems and does not aim for human readability in its raw form.
6. **Usage**: HAML is mostly utilized in view templates to generate HTML content dynamically, whereas JSON is commonly used for API responses, configuration files, and data storage due to its simplicity and efficiency.
In Summary, the key differences between HAML and JSON include syntax, purpose, compatibility, data representation, readability, and usage in web development projects.
Hi. Currently, I have a requirement where I have to create a new JSON file based on the input CSV file, validate the generated JSON file, and upload the JSON file into the application (which runs in AWS) using API. Kindly suggest the best language that can meet the above requirement. I feel Python will be better, but I am not sure with the justification of why python. Can you provide your views on this?
Python is very flexible and definitely up the job (although, in reality, any language will be able to cope with this task!). Python has some good libraries built in, and also some third party libraries that will help here. 1. Convert CSV -> JSON 2. Validate against a schema 3. Deploy to AWS
- The builtins include json and csv libraries, and, depending on the complexity of the csv file, it is fairly simple to convert:
import csv
import json
with open("your_input.csv", "r") as f:
csv_as_dict = list(csv.DictReader(f))[0]
with open("your_output.json", "w") as f:
json.dump(csv_as_dict, f)
The validation part is handled nicely by this library: https://pypi.org/project/jsonschema/ It allows you to create a schema and check whether what you have created works for what you want to do. It is based on the json schema standard, allowing annotation and validation of any json
It as an AWS library to automate the upload - or in fact do pretty much anything with AWS - from within your codebase: https://aws.amazon.com/sdk-for-python/ This will handle authentication to AWS and uploading / deploying the file to wherever it needs to go.
A lot depends on the last two pieces, but the converting itself is really pretty neat.
I would use Go. Since CSV files are flat (no hierarchy), you could use the encoding/csv package to read each row, and write out the values as JSON. See https://medium.com/@ankurraina/reading-a-simple-csv-in-go-36d7a269cecd. You just have to figure out in advance what the key is for each row.
This should be pretty doable in any language. Go with whatever you're most familiar with.
That being said, there's a case to be made for using Node.js since it's trivial to convert an object to JSON and vice versa.
Pros of HAML
- Clean and simple68
- No html open/close tags49
- Easier to write than ERB39
- Forces clean and readable code36
- Simpler markup language34
- Open Source24
- HTML Templating16
- You'll love it if you like Haikus1
Pros of JSON
- Simple5
- Widely supported4
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Cons of HAML
- It's not Pug3