XPath 1.0 standard includes the following of functions. Please see https://developer.mozilla.org/en-US/docs/Web/XPath/Functions for more information.

• last()
  returns the last item from a node set
• position()
  returns the position of node
• count()
  returns the number of nodes in a node set
• id()
  returns the id attribute of node
• local-name()
  returns the local name of a node
• namespace-uri()
  returns the namespace uri of a node
• name()
  return the name of a node
• string()
  converts the given argument to string
• concat()
  concatenates two or more strings and returns the resulting string
• starts-with()
  checks whether the first string starts with the second string and returns true or false
• contains()
  determines whether the first argument string contains the second argument string and returns boolean true or false
• substring-before()
  returns a string that is the part of a given string before a given substring
• substring-after()
  returns a string that is the rest of a given string after a given substring
• substring()
  returns a part of a given string
• string-length()
  returns the length of string
• normalize-space()
  strips leading and trailing white-space from a string
• translate()
  translates a set of characters and returns the translated string
• boolean()
  evaluates an expression and returns true or false
• not()
  evaluates a boolean expression and returns the opposite value
• true()
  returns a boolean value of true
• false()
  returns a boolean value of false
• lang()
  determines whether the context node matches the given language and returns boolean true or false
• number()
  converts an object to a number and returns the number
• sum()
  returns a number that is the sum of the numeric values of each node in a given node-set
• floor()
  evaluates a decimal number and returns the largest integer less than or equal to the decimal number
• ceiling()
  evaluates a decimal number and returns the smallest integer greater than or equal to the decimal number
• round()
  returns a number that is the nearest integer to the given number

Emakin Specific Functions

In addition to standard functions, Emakin also supports the following functions as a helper.

• distinct-values()
• string-join()
• mask()
• current()
• iif()
• format()
• min()
• max()
• avg()