what are the rules for naming a function

When naming a function, variable or class, you should keep the following things in mind:

Full Answer

What are the rules for naming a variable in MATLAB?

Walter Roberson (view profile) The rules are exactly the same as for variable names: start with a letter, followed by letters or numbers or underscore, maximum 64 characters (excluding the .m extension), and must not be the same as any MATLAB reserved word.

What are the rules for naming functions in Python?

One of the more universal, yet simple rules is: Function names should be verbs if the function changes the state of the program, and nouns if they're used to return a certain value. @timh Accessors are a bit of a special case, they usually return properties of an object, something you'd just use property access syntax for in C# or AS3.

Where can I find the naming rules for script and function files?

I tried to look for more information on naming rules for Matlab script and function files. In the Matlab documentation the only place that has any information is, Matlab > User's Guide > Programming Fundamentals > Programming Tips > Files and Filenames > Naming Functions and that is it.

What is the best way to name a function?

Self-explanatory names: a function getName () will tell the developer what it returns as well as setAddress (), isMale (), etc. Short: a function name must be as short as possible so that it's simple to type as well as easy to remember. A function getNumberOfPagesInTheBook () is not good, something like getBookPageCount () is better.

What are the rules for naming a function in C?

Naming Conventions rules for Variables and Methods (Functions) are:It should begin with an alphabet.There may be more than one alphabet, but without any spaces between them.Digits may be used but only after alphabet.No special symbol can be used except the underscore (_) symbol.More items...

What are the rules for naming a function in Python?

It helps in knowing one entity from another. Identifiers can be a combination of lowercase letters (a to z) or uppercase letters (A to Z) or digits (0 to 9) or an underscore (_). Names like myClass, var_3 and print_to_screen, all are valid examples. An identifier cannot start with a digit.

What are the 3 main rules when you're naming a variable?

Rules of naming variablesName your variables based on the terms of the subject area, so that the variable name clearly describes its purpose.Create variable names by deleting spaces that separate the words. ... Do not begin variable names with an underscore.Do not use variable names that consist of a single character.More items...

What should be the function name?

Short: a function name must be as short as possible so that it's simple to type as well as easy to remember. A function getNumberOfPagesInTheBook() is not good, something like getBookPageCount() is better. Use of prefixes: I always use prefixes in the functions such as getName(), setName(), hasHair(), isBlond(), etc.

How do you define a function in Python?

Basic Syntax for Defining a Function in Python In Python, you define a function with the def keyword, then write the function identifier (name) followed by parentheses and a colon. The next thing you have to do is make sure you indent with a tab or 4 spaces, and then specify what you want the function to do for you.

What characters are allowed in a function name identifier?

1 AnswerAn identifier must begin with a character from the unicode categories: Uppercase letter (Lu) (modules, types) Lowercase letter (Ll) (functions, variables) Titlecase letter (Lt) (modules, types)The rest of the characters must belong to any of the following categories: Uppercase letter (Lu) Lowercase letter (Ll)

What are the 5 rules to declare variable name?

Rules for defining variablesA variable can have alphabets, digits, and underscore.A variable name can start with the alphabet, and underscore only. It can't start with a digit.No whitespace is allowed within the variable name.A variable name must not be any reserved word or keyword, e.g. int, goto, etc.

What are the rules for naming of variables and constants?

Rules for naming a variable A variable name can only have letters (both uppercase and lowercase letters), digits and underscore. The first letter of a variable should be either a letter or an underscore. There is no rule on how long a variable name (identifier) can be.

Which of the following is correct about variable naming rules?

Q 19 - Which of the following is correct about variable naming rules? A - Variable names must begin with a letter or underscore character.

What is the function name?

A Function object's read-only name property indicates the function's name as specified when it was created, or it may be either anonymous or '' (an empty string) for functions created anonymously.

How do you define a function?

A function is defined as a relation between a set of inputs having one output each. In simple words, a function is a relationship between inputs where each input is related to exactly one output. Every function has a domain and codomain or range. A function is generally denoted by f(x) where x is the input.

What is one important naming convention of functions?

What is one important naming convention of functions? A function name should indicate how long the function takes to run. Two functions with similar behavior should be given identical names to indicate the relationship between them.

Which should not be used as function name in Python?

Python3. An identifier in Python cannot use any special symbols like !, @, #, $, % etc.

What is Python __ name __?

The __name__ variable (two underscores before and after) is a special Python variable. It gets its value depending on how we execute the containing script. Sometimes you write a script with functions that might be useful in other scripts as well. In Python, you can import that script as a module in another script.

How do you name a file in Python?

modules (filenames) should have short, all-lowercase names, and they can contain underscores; packages (directories) should have short, all-lowercase names, preferably without underscores; classes should use the CapWords convention.

How do you name a module in Python?

Package and Module Names Modules should have short, all-lowercase names. Underscores can be used in the module name if it improves readability. Python packages should also have short, all-lowercase names, although the use of underscores is discouraged.

Why should function names be lowercase?

Function names should be lowercase, with words separated by underscores as necessary to improve readability.

Why are functions more powerful?

Functions are even more powerful, though, because you can communicate with them and they can do different things depending on the information. You could change this function and send it different messages to print.

What is C code?

C is compiled to machine code that is the instruction set of the CPU, as well as static data. When an executable is created, startup code is added so that the right initializations are made for the code to run together with the standard library that is also in machine code.

Why is every programming step involved in both data manipulation and storage?

Every programming step involves either or both data manipulation (calculation) or storage, even when it seems we are dealing with textual information. This is because internally, all data in

Is integer a value type?

Now, if you tried this in .NET, it would fail. Reason - both of these types (Integer and Character) are essentially Structures (ValueTypes). The Properties and Methods associated of these structures are completely different. Check out Intellisense if you don’t believe me. Hence, converting them from one to the other is not correct.

Do all registers have to be saved?

They don’t use the same registers simultaneously; whenever a different program (or process, or thread) takes over from another, the current values of all the registers have to be saved somewhere so that they can be restored later.

Whence is 0?

whence − This is optional and defaults to 0 which means absolute file positioning, other values are 1 which means seek relative to the current position and 2 means seek relative to the file's end.

Naming functions and variables

This article is aimed at developers and tries to give insights and beliefs about naming variables. It handles best practices and the reasoning behind these practices.

Basic rules of formatting

When you have been a developer for some time, you will have noticed the following:

Basic rules of naming variables

It is all about clear, concise communication: use as few words as possible to clarify what the variable contains. Abbreviate if possible without creating doubt or confusion. All within reason and taking the framework or library you are using into account.

Naming functions

All guidelines for naming variables are also applicable to function names. It is about communicating what your function is about and how to use the function.

Function name dissonance

I discussed variables and functions’ naming; combining these two is the bread and butter of programming. For example, retrieving something from a function and storing it in a variable to use further down the code. Variable assignment is an excellent opportunity for miscommunication:

When to use verb prefixes?

When a class has many methods, it is better to use verb prefixes, such as get/set, to distinguish methods from each other.

What is the prefix for "on"?

There is also the "on" prefix, which is widely used when dealing with events (i.e. Java Android: onViewCreated ). Some other prefixes or short and/or generic verbs (such as has, get and set) widely used are:

Is a function name a verb?

One of the more universal, yet simple rules is: Function names should be verbs if the function changes the state of the program, and nouns if they're used to return a certain value.

Can Swift use set prefix?

Furthermore, in some languages (e.g. swift) you can also use property setters so you don't really use the "set" prefix:

Is getnumberofpagesinthebook a good function?

Short: a function name must be as short as possible so that it's simple to type as well as easy to remember. A function getNumberOfPagesInTheBook () is not good, something like getBookPageCount () is better. Use of prefixes: I always use prefixes in the functions such as getName (), setName (), hasHair (), isBlond (), etc.

General syntax

To define any of the above entities—a naming rule, symbol group, or naming style—set one or more properties using the following syntax:

Rule order

The order in which naming rules are defined in an EditorConfig file doesn't matter. The naming rules are automatically ordered according to the definition of the rules themselves.

Default naming styles

If you don't specify any custom naming rules, the following default styles are used:

Code Rule ID: IDE1006 (Naming rule violation)

All naming options have rule ID IDE1006 and title Naming rule violation. You can configure the severity of naming violations globally in an EditorConfig file with the following syntax:

Example: Public member capitalization

The following .editorconfig file contains a naming convention that specifies that public properties, methods, fields, events, and delegates must be capitalized. Notice that this naming convention specifies multiple kinds of symbol to apply the rule to, using a comma to separate the values.

Example: Private instance fields with underscore

This .editorconfig file snippet enforces that private instance fields should start with an _; if that convention is not followed, the IDE will treat it as a compiler error. Private static fields are ignored.

What variables do you name for days?

On the other hand, everyone at some point starts naming their variables, something like d for days or t for temperature, etc.

Why do we use abbreviations in programming?

Programmers sometimes resort to acronyms and abbreviations to keep the names shorter. For example, naming a class BEManager instead of BackendManager does save some keystrokes, but could potentially create confusion.

What is the goal of formatting?

The main goal regarding formatting is to be consistent. Chose a way of naming and stick to it. Nothing removes more from readability that names with different formats.

What does it mean when a name starts with a capital letter?

Usually, when a name starts with a capital letter, it marks that the name might be a class. On the other hand, if the name is in uppercase that signifies that the variable is a constant. When a name starts or ends with an underscore, it usually means that this variable is private.

What does "extract as much information as possible from the name" mean?

By this, I mean that the reader can extract as much information as possible from the name.

When choosing a word, what is the main point?

The main point when choosing a word is to think of what exactly the function does or what value the variable holds. If your colleague reads the code you’ve written, they should know as much about variables and function as you did when writing the code. But be careful — do not overthink it.

Is option 2 descriptive?

The first options in much cleaner, but sometimes option two would be more descriptive, especially in the case when you have multiple microservices and you want to be very specific which one you are getting the data from. It’s better to be clear and precise than to be cute.

How many characters are allowed in a variable name in MATLAB?

The rules are exactly the same as for variable names: start with a letter, followed by letters or numbers or underscore, maximum 64 characters (excluding the .m extension), and must not be the same as any MATLAB reserved word.

Do conventions matter in MATLAB?

People have quit high-paying jobs over such matters. None of the conventions matter to MATLAB itself: they only matter to the people writing the code, and the people maintaining the code (usually a much harder task), and to the people paying for the code (you'd be amazed how much gets written into contract specifications.)