In Elixir, you can get the name of a struct using the __struct__ field. This field is automatically added to any struct created using the defstruct macro and contains the name of the struct as an atom. To access the name of a struct, you can simply access the __struct__ field of the struct instance. For example:
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defmodule Person do defstruct name: nil, age: nil end person = %Person{name: "Alice", age: 30} struct_name = person.__struct__ IO.puts("Struct name: #{inspect(struct_name)}") |
In this example, struct_name will contain the atom Person, which is the name of the struct.
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What is the relevance of struct name in elixir programming?
In Elixir programming, struct name is important for defining data structures with named fields. Structs are used to create custom data types with predefined fields and functions for creating, accessing, and updating data within those types.
By defining a struct name, developers can organize and manage their data more effectively, improving readability, modularity, and maintainability of their code. Structs also provide a way to enforce and validate the shape of data stored within them, offering a level of safety and consistency in the application.
Overall, struct name is relevant in Elixir programming as it helps in defining structured data types and organizing data in a more logical and structured manner.
How do I get the name of a struct as a string in elixir?
In Elixir, you can use the __struct__ field of a struct to get its module name as a string. Here's an example:
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defmodule User do defstruct name: "John", age: 30 end user = %User{} struct_name = Module.concat(User).__struct__ IO.puts(struct_name) |
In this example, struct_name will contain the string "User", which is the name of the struct. You can then use this string as needed in your code.
How to identify the name of a struct in elixir?
In Elixir, the name of a struct can be identified using the __struct__ field. This field is automatically added to any struct when it is defined, and it contains the name of the struct as an atom.
For example, if you have a struct defined like this:
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defmodule User do defstruct name: "John", age: 30 end |
You can identify the name of the struct using the __struct__ field like this:
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user = %User{} IO.inspect(user.__struct__) # Output: User |
This will output the name of the struct, which in this case is User.
What is the purpose of retrieving struct name in elixir?
Retrieving struct name in Elixir can be useful for debugging and for writing code that needs to know the specific struct type being used. Knowing the struct name can help developers understand the data being manipulated in their code and can be used to conditionally execute code based on the struct type. This can be particularly useful when working with polymorphic data types or when writing generic functions that need to handle different types of structs.
