Between

Sometimes one needs to find everything that's embraced by certain characters.

      B∨≠\B←V∊S          ⍝ V←CV; S←CV; (⍴S)∊1 2

Examples

A typical example would be to analyse an HTML page in order to get either all the tags or the contents:

      ⎕FX⊃'r←cv Between sep;bv' 'r←bv∨≠\bv←cv∊sep'
      cv←'<div id="adr"><p>John Doe</p><p>London</p></div>'
      ⊃(cv Between'<>')⊂cv
<div id="adr"><p>
</p><p>          
</p></div>       
      ⊃(~cv Between'<>')⊂cv
John Doe
London  

Note that this will work only on well-formed HTML.

Specialities

.... Add special remarks for specific dialects here, for example the mentioning of a system function solving the problem goes here

Compatibility

Checked with: APL2, APLX, Dyalog, NARS2000 APL+Win?

Test Cases

Show Hide test cases test cases

Test
 ⎕IO←0      ⍝ You may change this; however, zero IS the default in the Phrasebook
⍝⎕ML←3      ⍝ Enable this line in Dyalog APL if appropriate
 ⎕FX⊃'r←cv Between sep' 'r←bv∨≠\bv←cv∊sep'
⍝ ---- Start Test cases (do not delete this!)
 (⍳0)≡''Between'<>'
0≡' 'Between'<>'
0 0≡'  'Between'<>'
1 1≡'<>'Between'<>'
0 1 1 0≡' <> 'Between'<>'
0 1 1 1 0≡' ''a'' 'Between''''

Test my code, both Examples and Test Cases.

See also: ... Add proper Wiki names. The pages do not necessarily must exist. If they don't they will show up on WantedPages and that's just fine

Mentor: KaiJaeger

Tags are used to create a list automatically - see ListAllTags Tags: <Text> <Character> Use "!" to avoid unwanted links for CamelCase names

CategoryPhrasesAll - CategoryPhraseSelection - CategoryPhraseBooleans Don't forget to add more categories. If they do not exist so far that's fine - someone will take care