Sequences - Xref - Types - sequence

{sequence:prime rows=3}
  {$sequence},
{/sequence:prime}

<?php

  $n = 0;
  $m = 3;

?>

[{sequence $n}{$sequence} {/sequence}][{sequence prime, rows=0}{$sequence} {/sequence}][{loop0}x{/loop}][{sequence $m}{$sequence} {/sequence}]

[{prime 5}{$prime} {/prime}][{fibonacci 5}{$fibonacci} {/fibonacci}][{keep:prime '1..10'}{$sequence} {/keep:prime}][{flag:even '1;2;3'}{$sequence}{/flag:even}][{multiply 3, rows=3}{$multiply} {/multiply}][{repeat 'x', rows=2}{$repeat}{/repeat}]

[{prime [3,5,7]}{$prime} {/prime}][{keep:prime [1,2,3,4,5]}{$sequence} {/keep:prime}][{fibonacci [1,2,3]}{$sequence} {/fibonacci}]

{sequence '1..9', push='a'/}[{pull:a first, 2}{$sequence} {/pull:a}][{pull:a add, 2}{$sequence} {/pull:a}][{sequence '1..3', add, 2}{$sequence} {/sequence}][{sequence '1..3', first, 2}{$sequence} {/sequence}][{prime first, 3}{$sequence} {/prime}][{sequence add, 3, rows=3}{$sequence} {/sequence}]

<?php

  // The visitor sends ?prime=<b>evil</b>. A level variable of the same name puts the
  // request's value aside and back at the level's end, and a {set} inside the level changes
  // the name for that level only: the value put back is the request's again, so {prime} is
  // the sequence type, never the visitor's text written raw in its place.

  padGetParms ( 'GET', [ 'prime' => '<b>evil</b>' ] );

?>

[{if 1 eq 1, $prime = 'x'}{set $prime = 'y'}{/if}{prime rows=3}{$prime} {/prime}]
[{sequence '1..1', $prime = 'x'}{set $prime = 'y'}{/sequence}{prime rows=3}{$prime} {/prime}]

[{prime 'even', rows=4}{$sequence} {/prime}|{prime even, rows=4}{$sequence} {/prime}][{sequence 'prime', 'square', rows=3}{$sequence} {/sequence}][{reverse 'prime', 'even', rows=4}{$sequence} {/reverse}][{keep:prime 'even'}{$sequence} {/keep:prime}]

[{add rows=3}{$add} {/add}][{sequence:add rows=3}{$sequence} {/sequence:add}][{set $x = ''}{sequence add=$x, rows=3}{$sequence} {/sequence}][{sequence '1..3', multiply=$x}{$sequence} {/sequence}][{echo sequence:add(3, '')}][{divide rows=3}{$divide} {/divide}][{and rows=3}{$and} {/and}][{keep:multiply from=1, to=3}{$sequence} {/keep:multiply}]

[{sequence 'prime'}{$sequence} {/sequence}][{set $t = 'fibonacci'}{sequence $t, rows=5}{$sequence} {/sequence}]{sequence '1..5', push='s'}{/sequence}[{sequence 's'}{$sequence} {/sequence}][{action 's', reverse}{$sequence} {/action}][{keep 'odd', s}{$sequence} {/keep}][{pull:s 'reverse'}{$sequence} {/pull:s}][{repeat 'prime', rows=2}{$repeat} {/repeat}][{sequence 'sum', from=1, to=4}{$sequence}{/sequence}]

<?php

  // A value spliced into the quoted expression of the eval sequence is a string of it in every
  // spelling - {eval '...'}, {sequence:eval '...'}, make='eval|...', sequence:eval(2, '...') -
  // as in eval='...': only eval= quoted it, and in the others the value became part of the
  // expression and called the function it named.

  $q = 'php:gettype()';

?>

e[{eval '@ . {$q}', rows=2}{$eval} {/eval}] s[{sequence:eval '@ . {$q}', rows=2}{$eval} {/sequence:eval}] m[{sequence '1..2', make='eval|@ . {$q}'}{$sequence} {/sequence}] c[{echo sequence:eval(2, '@ . {$q}')}]

{sequence '1..6', push='a'/}[{a:shift shift=3}{$sequence} {/a:shift}|{pull:a}{$sequence} {/pull:a}]{sequence '1..6', push='a'/}[{action:first a, first=3}{$sequence} {/action:first}][{action:minimum a, minimum=3}{$sequence} {/action:minimum}][{sequence:last a, last=3}{$sequence} {/sequence:last}][{action:shift a, 2}{$sequence} {/action:shift}|{pull:a}{$sequence} {/pull:a}]{sequence '1..6', push='a'/}[{a:first reverse, first=2}{$sequence} {/a:first}]

[{prime 5, page=2}{$prime} {/prime}{pager 'prime'}{$kind}:{$page} {/pager}][{sequence 4, page=3}{$sequence} {/sequence}{pager 'sequence'}{$kind}:{$page} {/pager}]{set $n = 10 ** 30}[{sequence '1..5', page=1, rows=$n}{$sequence} {/sequence}][{sequence '1..5', page=$n, rows=2}{$sequence} {/sequence}{pager 'sequence'}{$kind}:{$page} {/pager}]

{sequence '1..5', push='nums'}
a[{fibonacci rows=6, reverse}{$fibonacci}/{$sequence} {/fibonacci}]
b[{fibonacci rows=6, last=2}{$fibonacci}/{$sequence} {/fibonacci}]
c[{fibonacci rows=6, sum}{$fibonacci}/{$sequence} {/fibonacci}]
d[{fibonacci rows=5, make, multiply=2, reverse}{$fibonacci}/{$multiply}/{$sequence} {/fibonacci}]
e[{fibonacci rows=6, name='f', reverse}{$fibonacci}/{$f} {/fibonacci}]
f[{nums reverse}{$nums} {/nums}]
g[{pull:nums reverse}{$nums}/{$sequence} {/pull:nums}]
h[{nums sum}{$nums}{/nums}]

<?php

  // Fixture for a_request_value_never_decides_what_a_tag_is: a constant, pipe functions, two
  // sequences, a _data file, an application pipe function and PHP functions written as tags
  // and pipes - and $ucwords, a variable the page sets itself, which stays the field it is, as
  // $date does, given a default that keeps the request's value when one came. Fetched bare it
  // answers what the template means by each name.

  $ucwords = 'mine';
  $who     = $who ?? 'nobody';
  $date    = $date ?? '2000-01-01';

  // A name in a comment, a string or a function's parameter is none of the page's: $upper
  // here, '$fibonacci' and $nums below stay the template's, and so does the closure's local
  // $exclaim behind a binary string.

  $tagNamesText   = 'the $fibonacci sequence';
  $tagNamesBinary = b"a binary string for $who";
  $tagNamesLocal  = function ( $nums ) { $exclaim = 1; return $nums; };

?>

[{PHP_INT_SIZE}][{upper}abc{/upper}][{fibonacci rows=3}{$fibonacci}{/fibonacci}][{prime rows=3}{$prime}{/prime}][{nums}{$nums}{/nums}][{exclaim}hi{/exclaim}][{echo 'abc' | strrev}][{strtoupper 'x'}][{ucwords}][{who}][{date}]