Day: 30,31
Completed the @freeCodeCamp Functional Programming course. It includes a lot of new things like different methods() to manipulate strings and arrays.
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𝗙𝘂𝗻𝗰𝘁𝗶𝗼𝗻𝗮𝗹 𝗣𝗿𝗼𝗴𝗿𝗮𝗺𝗺𝗶𝗻𝗴 𝘪𝘴 𝘵𝘩𝘦 𝘱𝘳𝘰𝘤𝘦𝘴𝘴 𝘰𝘧 𝘣𝘶𝘪𝘭𝘥𝘪𝘯𝘨 𝘴𝘰𝘧𝘵𝘸𝘢𝘳𝘦 𝘣𝘺 𝘤𝘰𝘮𝘱𝘰𝘴𝘪𝘯𝘨 𝘱𝘶𝘳𝘦 𝘧𝘶𝘯𝘤𝘵𝘪𝘰𝘯𝘴, 𝘢𝘷𝘰𝘪𝘥𝘪𝘯𝘨 𝘴𝘩𝘢𝘳𝘦𝘥 𝘴𝘵𝘢𝘵𝘦, 𝘮𝘶𝘵𝘢𝘣𝘭𝘦 𝘥𝘢𝘵𝘢, 𝘢𝘯𝘥 𝘴𝘪𝘥𝘦-𝘦𝘧𝘧𝘦𝘤𝘵𝘴.
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𝗖𝗮𝗹𝗹𝗯𝗮𝗰𝗸𝘀 𝘢𝘳𝘦 𝘵𝘩𝘦 𝘧𝘶𝘯𝘤𝘵𝘪𝘰𝘯𝘴 𝘵𝘩𝘢𝘵 𝘢𝘳𝘦 𝘴𝘭𝘪𝘱𝘱𝘦𝘥 𝘰𝘳 𝘱𝘢𝘴𝘴𝘦𝘥 𝘪𝘯𝘵𝘰 𝘢𝘯𝘰𝘵𝘩𝘦𝘳 𝘧𝘶𝘯𝘤𝘵𝘪𝘰𝘯 𝘵𝘰 𝘥𝘦𝘤𝘪𝘥𝘦 𝘵𝘩𝘦 𝘪𝘯𝘷𝘰𝘤𝘢𝘵𝘪𝘰𝘯 𝘰𝘧 𝘵𝘩𝘢𝘵 𝘧𝘶𝘯𝘤𝘵𝘪𝘰𝘯.
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Functions that can be assigned to a variable, passed into another function, or returned from another function just like any other normal value, are called 𝗙𝗶𝗿𝘀𝘁-𝗰𝗹𝗮𝘀𝘀 𝗳𝘂𝗻𝗰𝘁𝗶𝗼𝗻𝘀. In JavaScript, all functions are first class functions.
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The functions that take a function as an argument, or return a function as a return value are called 𝗛𝗶𝗴𝗵𝗲𝗿-𝗼𝗿𝗱𝗲𝗿 𝗳𝘂𝗻𝗰𝘁𝗶𝗼𝗻𝘀.
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When the functions are passed in to another function or returned from another function, then those functions which gets passed in or returned can be called a 𝗟𝗮𝗺𝗯𝗱𝗮.
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The 𝗺𝗮𝗽 𝗺𝗲𝘁𝗵𝗼𝗱() iterates over each item in an array and returns a new array containing the results of calling the callback function on each element. It does this without mutating the original array.
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𝗳𝗶𝗹𝘁𝗲𝗿() calls a function on each element of an array and returns a new array containing only the elements for which that function returns true. In other words, it filters the array, based on the function passed to it.
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𝗔𝗿𝗿𝗮𝘆.𝗽𝗿𝗼𝘁𝗼𝘁𝘆𝗽𝗲.𝗿𝗲𝗱𝘂𝗰𝗲(), or simply 𝗿𝗲𝗱𝘂𝗰𝗲(), is the most general of all array operations in JavaScript. You can solve almost any array processing problem using the reduce method.
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The 𝘀𝗽𝗹𝗶𝘁() 𝗺𝗲𝘁𝗵𝗼𝗱 splits a string into an array of strings. It takes an argument for the delimiter, which can be a character to use to break up the string or a regular expression.
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The 𝗷𝗼𝗶𝗻() 𝗺𝗲𝘁𝗵𝗼𝗱 is used to join the elements of an array together to create a string. It takes an argument for the delimiter that is used to separate the array elements in the string.
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Thank you for your time, I hope you found it useful.

If you enjoyed this thread and want to accompany me during this 100 days journey, you can follow me at
@Aakash_Rao_02