What Do You Mean by 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. … Sequence patterns (e.g., a text string) are often described using regular expressions and matched using techniques such as backtracking.

What is pattern matching give an example?

For example, x* matches any number of x characters, [0-9]* matches any number of digits, and . * matches any number of anything. A regular expression pattern match succeeds if the pattern matches anywhere in the value being tested.

What is pattern matching in case study?

Pattern matching is the comparison of two patterns to determine whether they match (i.e., that they are the same) or do not match (i.e., that they differ). Pattern matching is the core procedure of theory-testing with cases.