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  • Node.js Crypto

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    The Node.js Crypto module supports cryptography. It provides cryptographic functionality that includes a set of wrappers for open SSL’s hash HMAC, cipher, decipher, sign and verify functions. What is Hash A hash is a fixed-length string of bits i.e. procedurally and deterministically generated from some arbitrary block of source data. What is HMAC HMAC stands…

  • Functions

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    Functions are the building blocks of readable, maintainable, and reusable code. A function is a set of statements to perform a specific task. Functions organize the program into logical blocks of code. Once defined, functions may be called to access code. This makes the code reusable. Moreover, functions make it easy to read and maintain…

  • Maps

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    Keyword lists are a convenient way to address content stored in lists by key, but underneath, Elixir is still walking through the list. That might be suitable if you have other plans for that list requiring walking through all of it, but it can be an unnecessary overhead if you are planning to use keys…

  • Enumeration

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    An enumeration is used for defining named constant values. An enumerated type is declared using the enum keyword. Syntax Where, Each of the symbols in the enumeration list stands for an integer value, one greater than the symbol that precedes it. By default, the value of the first enumeration symbol is 0. For example Example It will…

  • Runes

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    Strings are a sequence of characters. Dart represents strings as a sequence of Unicode UTF-16 code units. Unicode is a format that defines a unique numeric value for each letter, digit, and symbol. Since a Dart string is a sequence of UTF-16 code units, 32-bit Unicode values within a string are represented using a special…

  • Symbol

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    Symbols in Dart are opaque, dynamic string name used in reflecting out metadata from a library. Simply put, symbols are a way to store the relationship between a human readable string and a string that is optimized to be used by computers. Reflection is a mechanism to get metadata of a type at runtime like…

  • Node.js Net

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    Node.js provides the ability to perform socket programming. We can create chat application or communicate client and server applications using socket programming in Node.js. The Node.js net module contains functions for creating both servers and clients. Node.js Net Example In this example, we are using two command prompts: server: File: net_server.jsPlayNextMute Current Time 0:02 / Duration 18:10…

  • Map

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    The Map object is a simple key/value pair. Keys and values in a map may be of any type. A Map is a dynamic collection. In other words, Maps can grow and shrink at runtime. Maps can be declared in two ways − Declaring a Map using Map Literals To declare a map using map…

  • Keyword lists

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    So far, we have not discussed any associative data structures, i.e., data structures that can associate a certain value (or multiple values) to a key. Different languages call these features with different names like dictionaries, hashes, associative arrays, etc. In Elixir, we have two main associative data structures: keyword lists and maps. In this chapter,…

  • Lists and Tuples

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    (Linked) Lists A linked list is a heterogeneous list of elements that are stored at different locations in memory and are kept track of by using references. Linked lists are data structures especially used in functional programming. Elixir uses square brackets to specify a list of values. Values can be of any type − [1,…