| Introduction | |
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| 2 | |
| 3 | |
| 9 | |
| A | |
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| D | |
| E | |
| F | |
| G | |
| H | |
| I | |
| J | |
| K | |
| L | |
| M | |
| N | |
| O | |
| P | |
| Q | |
| R | |
| S | |
| T | |
| U | |
| V | |
| W | |
| X | |
| Y | |
| » | Z |
| Θ | |
ZERO
fold-left($f as function(item()*, item()) as item()*, $zero as item()*, $seq as item()*) → item()*
fold-right($f as function(item(), item()*) as item()*, $zero as item()*, $seq as item()*) → item()*
sum($arg as xs:anyAtomicType*, $zero as xs:anyAtomicType?) → xs:anyAtomicType?
ZERO-OR-ONE
zero-or-one($arg as item()*) → item()?