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Function evaluation in Haskell follows a process known as lazy evaluation. Unlike eager evaluation, which immediately evaluates all expressions, lazy evaluation delays evaluation until the value is actually needed. This leads to increased efficiency by avoiding unnecessary computations.In Haskell, a function is evaluated when it is applied to arguments. When a function is called with arguments, Haskell's compiler or interpreter performs a process called pattern matching.

In Haskell, several functions involve caching to improve performance. These include:Memoization: Haskell provides an easy way to memoize functions, which involves caching the results of function calls for subsequent invocations with the same input parameters. By remembering previously computed results, memoization avoids redundant calculations and dramatically speeds up subsequent function calls.

To deploy an Erlang application, you need to follow a series of steps:Build your application: Compile the Erlang source files into binaries using the Erlang compiler. This will generate beam files that contain the compiled code. Create a release: Use tools like Rebar3 or OTP to create a release. A release bundles the necessary files and resources required to run an application, including beam files, configuration files, and any other dependencies.

To optimize and profile Erlang code, there are several techniques and tools available. These can help identify performance bottlenecks and latency issues, allowing you to make appropriate optimizations. Here are some ways to accomplish this:Measure Performance: Start by profiling your code to understand where the performance issues lie. You can use built-in tools like timer:tc/3 or erlang:statistics/1 to measure execution time or other relevant metrics.

Dialyzer is a static analysis tool used for type checking in the Erlang programming language. It can detect type errors and provide type specifications for functions and modules in Erlang code. Here is an overview of how to use Dialyzer:Installation: Dialyzer is included in the Erlang/OTP distribution, so ensure you have Erlang installed on your system. Type Specifications: To use Dialyzer effectively, you need to add type specifications to your code.

Erlang is a powerful programming language that is widely used for building robust and scalable web applications. When it comes to web development, Erlang provides several features and tools that make it an excellent choice for building real-time and highly concurrent systems.One of the key features of Erlang is its support for lightweight processes, also known as actors.

Distributed systems refer to a network of computers working together as a single system, where tasks are executed across multiple machines to achieve high availability, fault tolerance, and scalability. Erlang, a functional programming language, is well-known for its built-in support for distributed computing.

Binary data in Erlang is handled using the built-in binary data type and a set of functions provided by the Erlang standard library.Erlang represents binary data as sequences of bytes, which are stored efficiently in memory. This makes it suitable for handling tasks that involve reading, manipulating, and encoding binary data efficiently.

File I/O in Erlang allows you to read from and write to files in the file system. Here are the basic steps to handle file I/O in Erlang:Opening a File: To start reading from or writing to a file, you need to open it using the file:open/2 function. This function takes the filename as a string and the mode as an atom. The mode can be read, write, append, read_write, or write_append. Reading from a File: To read data from a file, you can use the file:read/2 or file:read_line/1 functions.

In Erlang, modules are used to group related functions together. Creating and using modules in Erlang is straightforward. Here is a step-by-step guide:Start by creating a new file with the .erl extension. This file will serve as your Erlang module. Begin the module by defining its name using the -module(ModuleName). directive, where ModuleName is the desired name of your module. This directive should be the first line in your file.