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Abstract

er">17]</pre></div><blockquote id="c020">Compact Map()</blockquote><code>compactMap</code> function is similar to <code>map</code>, but it also includes an additional step, it filters out any <code>nil</code> values that result from applying the transformation closure. This is particularly useful when you have an array of optional values and you want to transform them while simultaneously filtering out the <code>nil</code> elements.<div id="9cf9"><pre>extension Array { func compactMap<T>(_ transforms: (Element) -> T?) -> [T] { var result = T for element in self { if let element = element { result.append(transform(element)) } } return result } }</pre></div>Here the only change from <code>Map</code> and <code>Compact Map</code> is avoiding the nil value with a condition.In the above code<ul><li>It takes a closure <code>transform</code> as an argument, which specifies how each element should be transformed.</li><li>Inside <code>compactMap</code>, a new array <code>result</code> is created to store the transformed non-nil elements.</li><li>It then iterates over each element of the original array (<code>self</code>), applies the transformation closure to each element, and checks if the result is non-nil.</li><li>If the result is non-nil, it appends the transformed element to the <code>result</code> array.</li><li>Finally, it returns the <code>result</code> array containing all the non-nil transformed elements.</li></ul><blockquote id="9909">How to consume it?</blockquote><div id="41f1"><pre>let mapArray = [23, 43, 56, nil, 75, 9, 14] let result= mapArray.compactMap { $0 } debugPrint(result) output: [23, 43, 56, 75, 9, 14]</pre></div><blockquote id="854c">Flat Map()</blockquote>FlatMap is typically the same as <code>map</code> does, only difference is that it always return flatten array joining all elements. Typically used to collect specific data in n

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ested array, dictionary or set<div id="6431"><pre>extension Array { func flatMap<T>(_ transform: (Element) -> [T]) -> [T] { var result = T for element in self { result.append(contentsOf: transform(element)) } return result } }</pre></div>In the above code<ul><li>It takes a closure <code>transform</code> as an argument, which specifies how each element should be transformed into a sequence.</li><li>Inside <code>flatMap</code>, a new array <code>result</code> is created to store the flattened elements.</li><li>It then iterates over each element of the original array (<code>self</code>), applies the transformation closure to each element, and concatenates the resulting sequences into the <code>result</code> array.</li><li><code>append(contentsOf: )</code> will add the elements of a sequence to the end of the array.</li><li>Finally, it returns the <code>result</code> array containing all the flattened elements.</li></ul><blockquote id="2285">How to consume it?</blockquote><div id="117f"><pre>let arrayOfArrays = [[1, 2, 3], [4, 5, 6], [7, 8, 9]] let transformedArray = arrayOfArrays.flatMap { $0 } print(transformedArray) output: [1, 2, 3, 4, 5, 6, 7, 8, 9]</pre></div><h1 id="3bda">Conclusion</h1>There are plenty of other use cases for higher-order functions. This is a gist of what we have discovered today:<ul><li>If you need to simply transform a value to another value, then use <code>map</code>.</li><li>If you need to remove nil values, then use <code>compactMap</code>.</li><li>If you need to flatten your result one level down, then use <code>flatMap</code>.</li></ul>Thank you for your time and attention! 👏👏👏Do clap👏 if you like this and comment your suggestions!!! Happy coding!!!<blockquote id="1e0c">Source Code: <a href="https://github.com/Vikassingamsetty/HigherOrderFunctions.git">GitHub</a></blockquote></article></body>

An Interview With My Masters: What Is Truth?

From the teachings of Nabir

Nabir was my spiritual teacher and mentor concerning the ways of the world. A mystic and critical thinker, he never used metaphysics as an excuse for lazy intellectualism, or pseudo-wisdom. The things I learned from him, over half a century, have been the foundation for my meaningful, and very successful life.

Here is how I first experienced his work…

My Introduction to Nabir

From the “Interview With My Masters” series of stories

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Here are the basics of his philosophy and teachings…

An Interview With My Masters

The teachings of Nabir

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In this Friday Night Class, Nabir spoke about the many different qualities of truth. Most of us, believed in the idea of some universal truth, even if that truth was natural law. Nabir turned all of our heads around on this one.

The Q&A session at the end of his talk went on for hours. Here is an edited version.

Q. Based on your talk this evening, there is no such thing as an absolute truth.

A. Well, yes, and no. You’re thinking of “truth” as if it is a rigid, linear, concept. At different levels, the truth can be 99.9999999999%. But almost never 100%. I will put this in real terms, not some abstract Zen trick. For instance, what is truth in general, is not the same as truth in the specific.

Q. Please explain this distinction between the general and specific.

A. When considering the notion of general versus specific, we can begin by considering observations versus actions and possibly say the general is the intention and the specific processes.

Q. OK. You mentioned in your talk that there are many levels of truth. Please explain this idea.

A. Well, some things are true on one level and not at another. 2 plus 2 in daily life is always 4. That’s how it is according to Newton. However, Newtonian mathematics is not absolute. Light, after all, does not travel in a straight line, does it? If you were sending a spaceship to Mars and back that 2 plus 2 equals 4, this level of “truth” is not going to give you precision. That ship will miss Mars by a great distance. This is all about magnification. If we are going to speak about truth we need to keep magnification front of mind. Something may be so at one level of magnification, and not at another.

Q. Please give us more examples of this concept of general and specific.

A. I can state that in general, I wish to have good health (an observation/intention). Achieve this requires specific actions, sustained over time (process). Of course, there are many things that one can do to satisfy the general intention of having good health. To satisfy “being healthy,” each person will have a specific process to follow, as pertains to their genetic and/or physiological needs. It does no good to “eat healthy,” in general, while failing to exclude a “healthy” food to which one has an allergy. In general, I desire to feel good in my body so I choose to exercise. But if I have underlying osteoporosis and am creating stress fractures, then I’m working at the wrong level of magnification, failing to address the specifics and the process that can bring success. Instead, what is brought is harm in the guise of a benefit that could occur under other/optimal circumstances.

Q. So which is true here and which is false?

A. The action is both true and false at the same time: true at the general level yet false at the specific one.

Q. And magnification?

A. You can see where magnification allows both “spend more time outside” and “get a heart stent” to accrue to good health. Yet only one satisfies the intention at a level of magnification where urgency is perceived. I could summarize by saying that, in general, antibiotics will save lives, but not if one has a specific allergy to penicillin. This is where the concept of Intention > Process > Outcome becomes important. The patient is getting worse from penicillin, which means the process is the incorrect one, despite any insistence that antibiotics help, in general.

Q. Please go deeper into this. I always like to explore ideas from many directions. Let’s look at this idea of specific versus general truth linguistically. Nouns of any kind (count or non-count, singular or plural) may be “specific” or “general.” A noun is specific when we wish to talk about something or things in particular. A noun is general when we wish to make a generalization about something or things.

So, an example of a general statement is: “Birds can fly.” Yet in truth, not all birds can. Ostrichs can’t fly. So what we are saying here is that truth will be different from the general to the specific concerning birds in general and Ostriches in specific. Specific statements allude to particular people, places, and things. Specific statements may also express specific characteristics that define those finite people, places, and things.

Q. I find this linguistic approach to truth interesting. Where can I explore this way of thinking in greater depth? A great start is the book Philosophical Investigations, by Ludwig Wittgenstein. It is an easy read, but you have to read every sentence, actually every word carefully to make sense of it. It is a joy, and totally rearranged my way of thinking.

Then he arose and left the room ending the session.

This story is a Module from my course, Beyond Thought

Here is a Medium story on this subject: @somdutt777

Ludwig Wittgenstein’s Philosophy: A Comprehensive Guide

Unveiling Wittgenstein’s Philosophy Through Comprehensive Study

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Here is an earlier conversation with Nabir from the archives @LewisCoaches

An Interview With My Masters: What Is Elegance?

From the teachings of Nabir

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Learn more about my philosophy and extensive teachings here…

Beyond Thought: An Introduction to the Practical Philosophy of Lewis Harrison

All humans seek happiness, contentment, success, and meaning in life. This book is an introduction to the practical…

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Author: Lewis Harrison is a Manifestation Coach, professional futurist (forecaster), and philanthropy consultant. He is the creator of the Ask Lewis Mentoring Method as well as HAGT — Harrison’s Applied Game Theory. He is the Executive Director of the International Association of Healing Professionals an educational organization that offers programs around the world in Intentional Living. He is also an Independent Scholar, with a passion for knowledge, personal development, self-improvement, creativity, innovation, and problem-solving. You can read all of his Medium stories at [email protected].

For a decade, Lewis was the host of a humor-based Q & A talk show on NPR (National Public Radio) affiliated WIOX FM in NY.

To learn more about studying with me, email me at [email protected]

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