replaceBetween — Replace text between positions or boundary markers.
s = replaceBetween(text, start, end, newText) - Replace text between positions or boundary markers.
Syntax
s = replaceBetween(text, start, end, newText)Inputs
| Name | Type | Required | Default | Description |
|---|---|---|---|---|
text | Any | Yes | — | Input text. |
arg | Any | Variadic | — | Additional arguments. |
Returns
| Name | Type | Description |
|---|---|---|
out | Any | Output value. |
How replaceBetween works
- Replace text between positions or boundary markers.
- Numeric boundaries are one-based inclusive character positions and accept every integer class through exact native validation.
- Text, start, end, and replacement inputs may each be scalar or have the same size; scalar values expand across the common text shape.
- Integer source or replacement values reject without implicit decimal formatting or provider access.
- Text and pattern boundaries replace the text between the matched delimiters and leave the delimiters in place.
Example
Using replaceBetween with coding agents
Open a RunMat example with live inputs, then ask the agent to explain how replaceBetween changes the result.
Run a small replaceBetween example, explain the result, then change one input and compare the output.
Related Strings functions
Transform
append · deblank · erase · eraseBetween · erasePunctuation · eraseURLs · extractAfter · extractBefore · extractBetween · insertAfter · insertBefore · join · lower · pad · replace · reverse · split · splitlines · strcat · strip · strjoin · strjust · strrep · strsplit · strtrim · upper
Text Analytics
addDependencyDetails · addEntityDetails · addLemmaDetails · addPartOfSpeechDetails · addSentenceDetails · addTypeDetails · bagOfNgrams · bagOfWords · cosineSimilarity · doc2sequence · encode · extractFileText · extractHTMLText · fastTextWordEmbedding · findElement · getAttribute · htmlTree · ind2word · isVocabularyWord · normalizeWords · readWordEmbedding · removeLongWords · removeShortWords · removeStopWords · removeWords · stopWords · tokenDetails · tokenizedDocument · trainWordEmbedding · vaderSentimentScores · vec2word · word2ind · word2vec · wordEncoding · writeWordEmbedding
Core
blanks · char · compose · convertCharsToStrings · convertContainedStringsToChars · convertStringsToChars · genvarname · int2str · isletter · isspace · isStringScalar · isstrprop · mat2str · native2unicode · newline · num2str · sprintf · sscanf · str2double · str2num · strcmp · strcmpi · string · string.empty · strings · strlength · strncmp · strncmpi · strtok · unicode2native
Search
contains · endsWith · matches · startsWith · strfind
Pattern
digitsPattern · lettersPattern · pattern · regexpPattern · textBoundary · wildcardPattern
Open-source implementation
Unlike proprietary runtimes, every RunMat function is open-source. Read exactly how replaceBetween is executed, line by line, in Rust.
- View the source for replaceBetween in Rust on GitHub
- Learn how the RunMat runtime works
- Found a bug? Open an issue with a minimal reproduction.
About RunMat
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