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6 min readIn Rust, you can execute code after an async function by using the await keyword in combination with the tokio::spawn function. By spawning a new asynchronous task, you can run code after the async function completes without blocking the main execution thread. This allows you to execute code concurrently and handle the result of the async function once it completes.
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4 min readYou can use multiple macros inside macros in Rust by nesting them within each other. This allows you to create more complex and customized macros for your code. To do this, simply define one macro within another macro by enclosing the inner macro's code within curly braces inside the outer macro's code. This way, you can create a chain of macros that work together to achieve the desired functionality.
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6 min readIn Elixir, you can create a map in a loop using the Enum.reduce/3 function. This function allows you to iterate over a collection and build a new map based on the elements of the original collection.To create a map in a loop, you can start by defining an empty map as the initial accumulator. Then, you can use the Enum.reduce/3 function to iterate over a list or other enumerable collection, and update the accumulator with each iteration.
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5 min readIn Rust, you can specify value constraints using the where clause in a generic type. By using the where clause, you can define conditions that the generic type must meet in order to be valid. This allows you to ensure that certain properties or functionalities are present in the type that is being used with the generic.For example, you can specify constraints on types and traits, such as requiring a type to implement a specific trait or have a certain property, like being Copy or Debug.
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2 min readTo get digits past the decimal in Elixir, you can use the Float.round/2 function along with the :precision option. This function rounds a float to a specified number of decimal places.For example, if you have a float number and you want to get the digits up to 2 decimal places, you can use the following code: rounded_number = Float.round(number, 2) This will round the number to 2 decimal places and store it in the rounded_number variable.
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6 min readIn Rust, you can check if an object is a primitive data type by using the std::mem::size_of function. This function returns the size of a type in bytes, so if the size of the type is a fixed value, it indicates that the type is a primitive data type. For example, integers like i32 and u8 have fixed sizes, so you can use std::mem::size_of::<i32>() or std::mem::size_of::<u8>() to check if an object is of a primitive data type.
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5 min readIn Elixir, you can format a number to a specific precision using the :erlang.float_to_binary/2 function. This function takes two arguments - the number you want to format and the precision (number of decimal places) you want to round it to.For example, if you have a number num = 3.14159 and you want to format it to two decimal places, you can use the function like this: formatted_num = :erlang.float_to_binary(num, [{:decimals, 2}]) This will give you the formatted number 3.14.
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8 min readTo refresh a token with expires time in Kotlin, you can implement a logic where you first check if the token has expired or is about to expire. If the token is expired or about to expire, you can make a call to your backend API to get a new token or refresh the existing token.You can store the token and its expiration time in a shared preference or a secure storage, and use this information to determine when to refresh the token.
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5 min readIn Rust, you can specify value constraints by using the where clause in generic functions or implementations. This allows you to restrict the types that a generic function can accept based on certain conditions. For example, you can specify that a generic type must implement a trait, or that it must have certain properties or methods. By using value constraints, you can ensure that your code is more type-safe and prevent unexpected behavior at compile time.
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7 min readTo check if an object is a primitive data type in Rust, you can use the std::mem::size_of function to determine the size of the object in memory. If the size of the object matches one of the known primitive data types (such as i8, i16, i32, i64, u8, u16, u32, u64, f32, f64, bool, char), then it is considered a primitive data type. Alternatively, you can use pattern matching or type inference to verify if the object is a primitive data type.
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5 min readIn Elixir, constants can be defined using the defmodule and def syntax. These constants can be used in test modules to make the test code more readable and maintainable. To use constants in Elixir tests, you can define the constants at the top level of the test module using the def keyword. For example, you can define a constant like SOME_CONSTANT = 10 at the top of the test module.You can then use this constant throughout the test module to refer to the value 10.