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Showing posts with label regular expression. Show all posts
Showing posts with label regular expression. Show all posts

Learning Regular Expression - Part 1

Regular expression is an expression by which searching of codes is made simpler it is defined by American mathematician Stephen Kleene

Regular expression has this below 4 parts in it
Literal Character we use in search
Metacharacter Special character that we use in regular expression eg: $ ^
Escape string A way of indicating the user of metacharacter
Search expression Search string that we use to search target string

Symbols in meta characters
Brackets []Matching of single characters or multiple characters in the stiring