metaapi.cloud-sdk
Version:
SDK for MetaApi, a professional cloud forex API which includes MetaTrader REST API and MetaTrader websocket API. Supports both MetaTrader 5 (MT5) and MetaTrader 4 (MT4). CopyFactory copy trading API included. (https://metaapi.cloud)
45 lines (44 loc) • 3.81 kB
JavaScript
/**
* Return an array with the numbers from 0 to n-1, in a random order
*/ "use strict";
function getRandomArray(n) {
let res, next;
if (n === 0) {
return [];
}
if (n === 1) {
return [
0
];
}
res = getRandomArray(n - 1);
next = Math.floor(Math.random() * n);
res.splice(next, 0, n - 1); // Add n-1 at a random position in the array
return res;
}
module.exports.getRandomArray = getRandomArray;
/*
* Default compareKeys function will work for numbers, strings and dates
*/ function defaultCompareKeysFunction(a, b) {
if (a < b) {
return -1;
}
if (a > b) {
return 1;
}
if (a === b) {
return 0;
}
let err = new Error("Couldn't compare elements");
err.a = a;
err.b = b;
throw err;
}
module.exports.defaultCompareKeysFunction = defaultCompareKeysFunction;
/**
* Check whether two values are equal (used in non-unique deletion)
*/ function defaultCheckValueEquality(a, b) {
return a === b;
}
module.exports.defaultCheckValueEquality = defaultCheckValueEquality;
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