missing-ids
v0.5.2
Published
## Overview
Downloads
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missing-ids
Overview
Finds holes in sequential series fetched by listNumsF
between minNumF
and maxNumF
, which are all async.
Note: Performs chunking of listNumsF of chunking
amount so as not to
overload DB / memory.
Installing
npm install --save missing-ids
Usage
function getListingFunction(missingIds) {
return function(start, end, next) {
var r = [];
for (var i = start; i <= end; i++) {
if (missingIds.indexOf(i) == -1) {
r.push(i);
}
}
if (start > 11) {
r.reverse();
}
next(null, r);
};
}
function getNumberFunction(n) {
return function(next) {
next(null, n);
};
}
var missingNumbers = [5, 10, 12, 29];
findMissingIds(
5,
getNumberFunction(5),
getNumberFunction(32),
getListingFunction(missingNumbers),
function(err, resultingMissingNumbers) {
expect(err).to.eql(null);
expect(resultingMissingNumbers).to.eql(missingNumbers);
done();
}
);