pattern matching – Page 2 – CodeRavo

Removing Empty and Whitespace Lines from Text Files with Unix Tools

In this tutorial, we will explore how to efficiently remove empty lines and lines that consist … Removing Empty and Whitespace Lines from Text Files with Unix ToolsRead more

awk, filter-whitespace, grep, pattern matching, remove-empty-lines, sed, stream-editor, text-processing, Unix command line

Finding Substrings Within Strings in SQL Server

Identifying Substrings in SQL Server A common task in database management is determining whether a larger … Finding Substrings Within Strings in SQL ServerRead more

CHARINDEX, database, like, pattern matching, SQL Server, string manipulation, string-search, substring, T-SQL

Mastering Regular Expressions: Matching Whole Words and Prefixes

Regular expressions are a powerful tool for matching patterns in text. One common task is to … Mastering Regular Expressions: Matching Whole Words and PrefixesRead more

character-classes, grouping, pattern matching, regular expressions, word-boundaries

Regular Expressions for Excluding Specific Characters

Introduction to Regular Expressions Regular expressions (regex) are a powerful tool for pattern matching and text … Regular Expressions for Excluding Specific CharactersRead more

.NET, c#, character-classes, excluding-characters, pattern matching, regex, regular expressions

Deleting Keys by Pattern in Redis

Deleting Keys by Pattern in Redis Redis is an in-memory data structure store, often used as … Deleting Keys by Pattern in RedisRead more

atomicity, del, key-deletion, keys, lua-scripting, pattern matching, performance, redis, scan

Efficient String Matching in PostgreSQL: Using LIKE, POSITION, and Pattern Operators

Introduction In relational databases such as PostgreSQL, querying data often involves searching for specific patterns within … Efficient String Matching in PostgreSQL: Using LIKE, POSITION, and Pattern OperatorsRead more

database querying, LIKE operator, operator, pattern matching, position-function, PostgreSQL, SQL, substring-search

Constraining String Length with Regular Expressions

Regular expressions (regex) are powerful tools for pattern matching within strings. A common use case is … Constraining String Length with Regular ExpressionsRead more

character-class, length-constraint, pattern matching, quantifier, regex, regular-expression, string validation

Optimizing String Capitalization: Making Only the First Letter Uppercase in C#

Introduction When working with user input or text data, you often need to ensure that strings … Optimizing String Capitalization: Making Only the First Letter Uppercase in C#Read more

c#, capitalization, extension-methods, pattern matching, performance, string manipulation

Extracting Substrings Between Delimiters

Extracting Substrings Between Delimiters Often, you’ll encounter scenarios where you need to extract a specific portion … Extracting Substrings Between DelimitersRead more

find, pattern matching, Python, regular expressions, rfind, string manipulation, string slicing, substring extraction

Working with Special Characters in Regular Expressions

Regular expressions are a powerful tool for pattern matching and validation in strings. One common task … Working with Special Characters in Regular ExpressionsRead more

ASCII, character-classes, pattern matching, regular expressions, special-characters, Unicode