fn.count( arg as Sequence, [maximum as Number?] ) as Number
Returns the number of items in the value of $arg.
Returns 0 if $arg is the empty sequence.
Parameters | |
---|---|
arg | The sequence of items to count. If you pass in a single value, it is treated as a Sequence with that single item; therefore, if you pass in an array, the array is treated as a single value (not as one value for each item in the array). If you mean to pass in the values of each item in the array, then you can call xdmp.arrayValues on the array. |
maximum |
The maximum value of the count to return. MarkLogic Server will stop
count when the $maximum value is reached and return
the $maximum value. This is an extension to the W3C
standard fn:count function.
|
const seq1 = xdmp.arrayValues(["item1", "item2"]); const seq3 = null ; fn.count(seq1); => 2 const seq1 = xdmp.arrayValues(["item1", "item2"]); const seq3 = null ; fn.count(seq3); => 0 const seq2 = xdmp.arrayValues([98.5, 98.3, 98.9]); fn.count(seq2); => 3 const seq = xdmp.arrayValues([98.5, 98.3, 98.9]); const seq2 = new Array(); for (const x in seq) { if (x > 100) { seq2.push(x); } }; fn.count(xdmp.arrayValues(seq2)); => 0
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