XSLT 2.0 and XPath 2.0 Programmer's Reference, 4th Edition (178 page)

For a more generalized function that looks for cycles in any source data file, regardless how the relationships are represented, see the section
Simulating Higher Order Functions
under

on page 240.

See Also

on page 483

xsl:if

The

instruction encloses a sequence constructor that will be evaluated only if a specified condition is true. If the condition is true, it returns the result of this evaluation; otherwise, it returns the empty sequence.

is analogous to the
if
statement found in many programming languages.

Changes in 2.0

None.

Format