time-to-botec

README.md (6388B)

---

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 # substringAfterLast
 
 > Return the part of a string after the last occurrence of a specified substring.
 
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 ## Usage
 
 ```javascript
 var substringAfterLast = require( '@stdlib/string/substring-after-last' );
 ```
 
 #### substringAfterLast( str, search\[, fromIndex] ) 
 
 Returns the part of a string after the last occurrence of a specified substring.
 
 ```javascript
 var str = 'beep boop';
 var out = substringAfterLast( str, 'b' );
 // returns 'oop'
 
 out = substringAfterLast( str, 'o' );
 // returns 'p'
 ```
 
 By default, the search starts at the end of the string and proceeds backwards to the beginning. To start the search at a specified index, specify an integer for the `fromIndex` argument.
 
 ```javascript
 var str = 'beep boop';
 var out = substringAfterLast( str, 'b', 3 );
 // returns 'eep boop'
 ```
 
 </section>
 
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 ## Notes
 
 -   If a substring is not present in a provided string, the function returns an empty string.
 -   If provided an empty substring, the function returns an empty string.
 
 </section>
 
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 ## Examples
 
 <!-- eslint no-undef: "error" -->
 
 ```javascript
 var substringAfterLast = require( '@stdlib/string/substring-after-last' );
 
 var str = 'To be, or not to be, that is the question.';
 var out = substringAfterLast( str, ', ' );
 // returns 'that is the question.'
 
 out = substringAfterLast( str, 'to be' );
 // returns ', that is the question.'
 
 out = substringAfterLast( str, 'question.' );
 // returns ''
 
 out = substringAfterLast( str, 'xyz' );
 // returns ''
 
 out = substringAfterLast( str, '' );
 // returns ''
 ```
 
 </section>
 
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 * * *
 
 <section class="cli">
 
 ## CLI
 
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 <section class="usage">
 
 ### Usage
 
 ```text
 Usage: substring-after-last [options] --search=<string> [<string>]
 
 Options:
 
   -h,    --help                Print this message.
   -V,    --version             Print the package version.
          --search string       Search string.
          --from-index int      Index at which to start the search.
          --split sep           Delimiter for stdin data. Default: '/\\r?\\n/'.
 ```
 
 </section>
 
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 <section class="notes">
 
 ### Notes
 
 -   If the split separator is a [regular expression][mdn-regexp], ensure that the `split` option is either properly escaped or enclosed in quotes.
 
     ```bash
     # Not escaped...
     $ echo -n $'foo\nbar\nbaz' | substring-after-last --search a --split /\r?\n/
 
     # Escaped...
     $ echo -n $'foo\nbar\nbaz' | substring-after-last --search a --split /\\r?\\n/
     ```
 
 -   The implementation ignores trailing delimiters.
 
 </section>
 
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 ### Examples
 
 ```bash
 $ substring-after-last abcdefg --search d
 efg
 ```
 
 To use as a [standard stream][standard-streams],
 
 ```bash
 $ echo -n $'bar\nbaz' | substring-after-last --search b
 ar
 az
 ```
 
 By default, when used as a [standard stream][standard-streams], the implementation assumes newline-delimited data. To specify an alternative delimiter, set the `split` option.
 
 ```bash
 $ echo -n 'bar\tbaz' | substring-after-last --search b --split '\t'
 ar
 az
 ```
 
 </section>
 
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 </section>
 
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 * * *
 
 ## See Also
 
 -   <span class="package-name">[`@stdlib/string/substring-before`][@stdlib/string/substring-before]</span><span class="delimiter">: </span><span class="description">return the part of a string before a specified substring.</span>
 -   <span class="package-name">[`@stdlib/string/substring-before-last`][@stdlib/string/substring-before-last]</span><span class="delimiter">: </span><span class="description">return the part of a string before the last occurrence of a specified substring.</span>
 -   <span class="package-name">[`@stdlib/string/substring-after`][@stdlib/string/substring-after]</span><span class="delimiter">: </span><span class="description">return the part of a string after a specified substring.</span>
 
 </section>
 
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 [standard-streams]: https://en.wikipedia.org/wiki/Standard_streams
 
 [mdn-regexp]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions
 
 <!-- <related-links> -->
 
 [@stdlib/string/substring-before]: https://github.com/stdlib-js/string/tree/main/substring-before
 
 [@stdlib/string/substring-before-last]: https://github.com/stdlib-js/string/tree/main/substring-before-last
 
 [@stdlib/string/substring-after]: https://github.com/stdlib-js/string/tree/main/substring-after
 
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