Conditional constructs

Pattern matching

In computer science, pattern matching is the act of checking a given sequence of tokens for the presence of the constituents of some pattern. In contrast to pattern recognition, the match usually has to be exact: "either it will or will not be a match." The patterns generally have the form of either sequences or tree structures. Uses of pattern matching include outputting the locations (if any) of a pattern within a token sequence, to output some component of the matched pattern, and to substitute the matching pattern with some other token sequence (i.e., search and replace). Sequence patterns (e.g., a text string) are often described using regular expressions and matched using techniques such as backtracking. Tree patterns are used in some programming languages as a general tool to process data based on its structure, e.g. C#, F#, Haskell, ML, Python, Ruby, Rust, Scala, Swift and the symbolic mathematics language Mathematica have special syntax for expressing tree patterns and a language construct for conditional execution and value retrieval based on it. Often it is possible to give alternative patterns that are tried one by one, which yields a powerful conditional programming construct. Pattern matching sometimes includes support for guards. (Wikipedia).

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Pattern Matching - Correctness

Learn how to use pattern matching to assist you in your determination of correctness. This video contains two examples, one with feedback and one without. https://teacher.desmos.com/activitybuilder/custom/6066725595e2513dc3958333

From playlist Pattern Matching with Computation Layer

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More Complex Patterns

Sometimes you need to nest a pattern in another pattern. Learn how to build these patterns and then extract information from them. https://teacher.desmos.com/activitybuilder/custom/605e21d90925ca0c93fabbbd

From playlist Pattern Matching with Computation Layer

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Pattern Matching - Being Flexible

As your patterns become more complex you'll need to build patterns that can match expressions with different but similar forms. Activity Link: https://teacher.desmos.com/activitybuilder/custom/60626999811e664d596ece18

From playlist Pattern Matching with Computation Layer

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Introduction to Matching in Bipartite Graphs (Hall's Marriage Theorem)

This video introduces matching in bipartite graphs. mathispower4u.com

From playlist Graph Theory (Discrete Math)

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Agnes Cseh: Popular matchings

We are given a bipartite graph where each vertex has a strict preference list ranking its neighbors. A matching M is stable if there is no unmatched pair ab, so that a and b both prefer each other to their partners in M. A matching M is popular if there is no matching M' such that the num

From playlist HIM Lectures 2015

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Fraction Pattern

Matching and parsing fractions using the pattern library in Computation Layer https://teacher.desmos.com/activitybuilder/custom/60593e26c77e9949be1edfe6 Fraction Bars: https://teacher.desmos.com/activitybuilder/custom/605b3f91fa93fb0d4aa99b2b#preview/1bd9a17d-726f-43f4-94bc-a3715fe67a87

From playlist Pattern Matching with Computation Layer

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Introduction to Similarity

This video introduces similarity and explains how to determine if two figures are similar or not. http://mathispower4u.com

From playlist Number Sense - Decimals, Percents, and Ratios

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Proof: Regular Bipartite Graph has a Perfect Matching | Graph Theory

An r-regular bipartite graph, with r at least 1, will always have a perfect matching. We prove this result about bipartite matchings in today's graph theory video lesson using Hall's marriage theorem for bipartite matchings. Recall that a perfect matching is a matching that covers every ve

From playlist Graph Theory

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RubyConf 2019 - Pattern Matching - New feature in Ruby 2.7 by Kazuki Tsujimoto

RubyConf 2019 - Pattern Matching - New feature in Ruby 2.7 by Kazuki Tsujimoto Ruby core team plans to introduce pattern matching as an experimental feature in Ruby 2.7. In this presentation, we will talk about the current proposed syntax and its design policy. #confreaks #rubyconf2019

From playlist RubyConf 2019

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Lecture 8 - String Matching Algorithms

This is Lecture 8 of the CSE549 (Computational Biology) course taught by Professor Steven Skiena [http://www.cs.sunysb.edu/~skiena/] at Stony Brook University in 2010. The lecture slides are available at: http://www.algorithm.cs.sunysb.edu/computationalbiology/pdf/lecture8.pdf More infor

From playlist CSE549 - Computational Biology - 2010 SBU

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Patterns - The Rust Book chapter 18 (part 63)

I'm streaming every weekday morning on Twitch at https://www.twitch.tv/brookzerker. Please feel free to stop by and say hi! Links Rust book: https://doc.rust-lang.org/book/second-edition/ My code: https://github.com/BrooksPatton/learning-rust The Learning Wiki: https://github.com/BrooksP

From playlist Rust Book

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Professor Richard J. Gaylord's Wolfram Language Fundamentals Part One

Download notebook here: http://library.wolfram.com/infocenter/MathSource/5216 (Part 1 of 3) Based on a series of lectures delivered over many years to students and professionals at university, commercial and government organizations, Professor Gaylord explains the fundamental principles u

From playlist Professor Richard J. Gaylord's Wolfram Language Fundamentals

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Python Tutorial: re Module - How to Write and Match Regular Expressions (Regex)

In this Python Programming Tutorial, we will be learning how to read, write, and match regular expressions with the re module. Regular expressions are extremely useful for matching common patterns of text such as email addresses, phone numbers, URLs, etc. Learning how to do this within Pyt

From playlist Python Tutorials

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Lecture 4A: Pattern Matching and Rule-based Substitution

MIT 6.001 Structure and Interpretation of Computer Programs, Spring 2005 Instructor: Harold Abelson, Gerald Jay Sussman, Julie Sussman View the complete course: https://ocw.mit.edu/6-001S05 YouTube Playlist: https://www.youtube.com/playlist?list=PLE18841CABEA24090 Pattern Matching and Rul

From playlist MIT 6.001 Structure and Interpretation, 1986

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Black Hat USA 2010: TitanMist: Your First Step to Reversing Nirvana 2/5

Speakers: Mario Vuksan, Tomislav Pericin Security is notoriously disunited. Every year multiple tools and projects are released and never maintained. TitanMist is its inverse opposite. Built on top of TitanEngine, it provides automation and manages all known and good PEID signatures, unpa

From playlist REVERSE ENGINEERING REDUX

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Regular Expressions in Java | Java Regex Tutorial | Java Training | Edureka

🔥 Java Certification Training: https://www.edureka.co/java-j2ee-training-course This Edureka Live video on "Java Regex " will talk about the various types of regular expressions that will give a head start to beginners with Java regular expressions. Below topics are covered in this video:

From playlist Java Tutorial For Beginners | Edureka

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What is the alternate in sign sequence

👉 Learn about sequences. A sequence is a list of numbers/values exhibiting a defined pattern. A number/value in a sequence is called a term of the sequence. There are many types of sequence, among which are: arithmetic and geometric sequence. An arithmetic sequence is a sequence in which

From playlist Sequences

Related pages

Fibonacci number | Refal | String (computer science) | Context-free grammar | Symbolic integration | Abstract syntax tree | Proof by exhaustion | Pattern calculus | Coccinelle (software) | Abstract data type | Backus–Naur form | Regular expression | Curry–Howard correspondence | Integer | Tree structure | Backtracking | Concatenation | Graph matching | Tagged union | Tree (data structure) | Pure (programming language) | Record (computer science) | Prolog | Tom (pattern matching language) | Red–black tree | Algebraic data type | Computer algebra system | Recursion | Alternation (formal language theory)