strreplaceall

Strreplaceall is a common string manipulation operation that replaces every occurrence of a specified substring within a string with another substring. While the exact name varies by language, it is typically implemented as replaceAll, ReplaceAll, str_replace_all, or an equivalent method such as strings.ReplaceAll in some standard libraries. The operation takes an input string, a target substring, and a replacement substring, and returns a new string with all non-overlapping matches substituted.

The exact behavior depends on whether the target is treated as a literal substring or as a regular expression. In literal-mode implementations, the replacement is a straightforward substring substitution. In regex-based variants, the target is a pattern, so special characters must be escaped unless the language provides a literal mode. Some languages offer a count parameter to limit replacements; when omitted, all matches are replaced. Handling of edge cases also differs: many languages disallow an empty target string and may raise an error, while others define specific behavior for empty inputs or zero-length matches.

Examples by language:

- Go: strings.ReplaceAll(s, old, new) replaces all occurrences of old with new in s.

- JavaScript: str.replaceAll(old, new) replaces all matches of old with new; searchValue can be a string or a RegExp with the global flag.

- Java: replaceAll uses a regular expression for the first argument; for literal substitution, replace is preferred.

- Python: s.replace(old, new) replaces all occurrences of old with new; there is no separate strreplaceall function, and an optional count can limit replacements.

Overall, strreplaceall-like functionality is a widely supported tool for text processing, with careful attention to whether targets are treated literally or as patterns and to language-specific edge cases.