Stringr Functions Overview

Stringr Functions Overview

• str_detect: Identifies if a specified pattern exists within a string.
• str_which: Returns indices of strings where a pattern match is found.
• str_count: Tallies the occurrences of a pattern within a string.
• str_locate: Pinpoints the exact locations of pattern matches in a string.
• str_sub: Retrieves a substring from a character vector.

String Filtering and Extraction

• str_subset: Filters and returns only those strings that contain a specific pattern.
• str_extract: Captures the first instance of a pattern found within each string, returning a vector.
• str_match: Similar to str_extract but provides matches as a matrix, displaying different groups defined by parentheses in the pattern.

String Manipulation Functions

• str_length: Measures the length of strings in terms of character count.
• str_pad: Expands a string's width by padding it with specified characters.
• str_trunc: Reduces string size, truncating content with an ellipsis if necessary.
• str_trim: Removes leading and trailing whitespace from strings.

Substitution Functions

• str_replace: Substitutes the first instance of a matched pattern in each string.
• str_replace_all: Replaces every occurrence of a matched pattern throughout each string.

Case Conversion Functions

• str_to_lower: Transforms all characters in the string to lowercase.
• str_to_upper: Converts all characters in the string to uppercase.
• str_to_title: Modifies a string to title case, capitalizing the first letter of each word.

String Joining and Repeating

• str_c: Concatenates multiple strings into one.
• str_dup: Duplicates a string a specified number of times.

String Splitting

• str_split_fixed: Divides a vector of strings into a matrix format based on occurrences of a pattern.
• str_split: Breaks strings into a list of substrings, facilitating flexible manipulation.

Advanced String Handling

• glue::glue: Constructs strings from variables and expressions to evaluate inline.
• glue::glue_data: Similar to glue but uses structures like data frames or lists for string construction.

Sorting and Viewing Strings

• str_order: Provides indices that would correctly sort a character vector.
• str_sort: Organizes a character vector in ascending order.
• str_conv: Adjusts the encoding of a given string.
• str_view: Displays an HTML view of the first regex match found in each string.
• str_view_all: Renders an HTML view of all regex matches appearing in the strings.

Formatting Strings

• str_wrap: Reformats strings into structured paragraphs for improved readability.