How to resolve the algorithm Regular expressions step by step in the Smalltalk programming language

Published on 12 May 2024 09:40 PM
#Smalltalk

How to resolve the algorithm Regular expressions step by step in the Smalltalk programming language

Table of Contents

Problem Statement

Let's start with the solution:

Step by Step solution about How to resolve the algorithm Regular expressions step by step in the Smalltalk programming language

Source code in the smalltalk programming language

|re s s1|
re := Regex fromString: '[a-z]+ing'.
s := 'this is a matching string'.
s1 := 'this does not match'.

(s =~ re)
ifMatched: [ :b |
   b match displayNl
].
(s1 =~ re)
ifMatched: [ :b |
   'Strangely matched!' displayNl
]
ifNotMatched: [
   'no match!' displayNl
].

(s replacingRegex: re with: 'modified') displayNl.

|re s s1|
re := 'm[a-z]+ing' asRegex.
s := 'this is a matching string'.
 
(re search: s) ifTrue: [ 'matches!' ].
 
s1 := re copy: s replacingMatchesWith: 'modified'.

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