Snake case and camel case are two different naming conventions used in programming for different purposes. Snake case is a naming convention where an underscore separates each word or keyword in a phrase, while in camel case, each word or keyword is combined or joined without any separator, but the first letter of each successive word is capitalized.
What is Snake Case to Camel Case Converter?
A snake case to camel case converter is a tool or function that converts a given string or identifier from a snake case to a camel case. This is typically done by removing the underscores between words or keywords and capitalizing the first letter of each word except for the first one.
For example, the string "hello_world" would be converted to "helloWorld" using a snake case to camel case converter.
This conversion is often used when working with APIs or databases where variables or column names are represented in snake case, but it is more natural to work with camel case in code.
Now, let's check out what's difference between the snake case and the camel case.
Difference Between Snake Case and Camel Case in Tabular Form
Here are the differences between Snake Case and Camel Case in a tabular form:
|All lower case
|First letter of each word is capitalized except the first word
|Often used in Python
As shown in the table, the main difference between snake case and camel case is the separator used and the capitalization of the words. Snake case uses an underscore as a separator between words, while camel case joins words together without any separator. In snake case, all words are typically in lower case, while in camel case, the first letter of each word is capitalized except the first word.
The choice of which convention to use is often based on personal preference or the standards of a particular programming language or organization or requirements.
Now, let's have a better understanding with a few more examples.
Here are examples of identifiers written in snake case and camel case:
- Snake case: first_name, Camel case: firstName
- Snake case: phone_number, Camel case: phoneNumber
- Snake case: date_of_birth, Camel case: dateOfBirth
- Snake case: social_security_number, Camel case: socialSecurityNumber
In each of these examples, the snake case version uses an underscore to separate the words, and all the words are in lowercase. On the other hand, the camel case version joins the words together without any separator, and the first letter of each word (except the first one) is capitalized.
Camel Case Interesting Facts
- It is also known as medial capitals, humpback or intercap notation.
- It is a naming convention where each word in a compound word is capitalized except for the first word.
- It was first used in programming languages such as Pascal and C++ to make variable names more readable.
- It is used in many programming languages such as Java, Python, Ruby, and C#.
- It can be used for naming variables, functions, classes, and files.
- It is also used for naming XML elements and attributes.
- It can be used with different capitalization styles such as upper camel case (Pascal case), lower camel case (camel case), and hybrid camel case.
- Upper camel case capitalizes the first letter of each word except for the first word.
- Lower camel case capitalizes the first letter of each word except for the first word which is in lower case.
- Hybrid camel case capitalizes the first letter of each word except for the first word which can be either upper or lower case.
- It can improve readability by making variable names more descriptive and easier to read.
- It can also help distinguish between different types of variables such as local variables and global variables.
- It can also help avoid naming conflicts between different variables.
- It can be combined with other naming conventions such as Hungarian notation to provide additional information about the variable type or purpose.
- It can be used with acronyms by capitalizing each letter of the acronym such as XMLHttpRequest.
Now, let's deep dive into the applications of camel case. Where it's used and more details.
Applications of Camel Case
Camel case is a popular naming convention in programming and is used in a variety of applications, including and not limited to:
Object-oriented programming: In object-oriented programming, camel case is often used to name classes and objects. For e.g., a class representing a person might be named
Personin camel case.
XML and HTML: It is commonly used in XML and HTML documents to name attributes and elements. For example, the attribute that specifies the background color of a webpage can be named
backgroundColorin camel case.
APIs and web services: Many APIs and web services use the camel case style for naming endpoints and parameters. This helps to standardize the naming conventions across different programming languages, platforms, and services.
- CamelCase in Company and Product Names: CamelCase is widely used to create new words out of existing words, particularly for company and product names that can be registered as trademarks. Examples of companies and products that use CamelCase are iPhone, AirDrop, DisplayPort, OneDrive, PlayStation, YouTube, and TechTarget.
- CamelCase in Programming: In programming, CamelCase is used when white space is not allowed for technical reasons. Parsing text with spaces as delimiters may make a phrase hard to read or ambiguous. For instance, chartable can be interpreted as char table or chart able. Other ways to remove white space are through kebab-case or snake_case.
- CamelCase in Website URLs: Website URLs often use CamelCase to replace spaces. Domain names cannot contain special characters and are not case-sensitive, making CamelCase a preferred option for easy readability and memorization. URLs with spaces need to use the American Standard Code for Information Interchange percent encoding to replace them with %20, which is harder to read and type. Post tagging and #hashtags are also often presented in CamelCase for easy readability. Emails may also be presented as CamelCase.
- CamelCase in File Names: CamelCase is also popular in file names, even though most file systems support spaces in file names. CamelCase is often preferred because encoding spaces in file names can cause issues, and referring to file names or paths with spaces in a command-line interface can be cumbersome and require quotation marks. It is also important to note that some file systems are case-sensitive when referring to files.
Why we need to convert the snake case to the camel case?
We may need to convert the snake case to a camel case for a few reasons:
- Consistency with coding conventions: Different programming languages or organizations may have different coding conventions, including different naming conventions. Suppose we are working on a project or with a team that uses camel case as the naming convention for variables, functions, and classes. In that case, it may be necessary to convert any snake case identifiers to camel case for consistency and readability.
- Integration with APIs and databases: Many APIs and databases use camel case as the naming convention for their endpoints, parameters, and column names. Suppose we are working with an API or database that uses a camel case. In that case, it may be necessary to convert any snake case identifiers to camel case to ensure compatibility and consistency.
- Readability and clarity: Camel case identifiers can be more readable and clearer than snake case identifiers, especially when the identifier consists of multiple words. In the camel case, each word begins with a capital letter, making it easier to distinguish between words and understand the meaning of the identifier.
In conclusion, a free online Camel case to Snake case converter tool can be a useful resource for developers who need to convert identifiers between the two naming conventions quickly and easily. This tool can help ensure consistency with coding conventions, compatibility with APIs and databases, and improve the readability of code. By simplifying the conversion process, this tool can help streamline development workflows and save time for developers.