I have a problem. I got one to save the data called in a loop to an empty json. It's about "eventsPolygon". One args with index 0 will have to be written to JSONA. How to do it?
async function main() {
console.log("Start checking rewards")
const currentBlockNumberPolygon = await maticProvider.getBlockNumber() - 1
const currentBlockNumberBsc = await bscProvider.getBlockNumber() - 1
const oldestBlockNumberPolygon = 22939848
const oldestBlockNumberBsc = 13763979
const eventFilterPolygon = Missions.filters.RewardToPay()
const eventFilterBsc = Rewards.filters.RewardPayed()
let eventsPolygon = []
let eventsBsc = []
for(let i = oldestBlockNumberPolygon; i < currentBlockNumberPolygon-10000; i+=10000) {
const eventsLoop = await Missions.queryFilter(eventFilterPolygon, i, i+10000)
eventsPolygon = eventsPolygon.concat(eventsLoop)
console.log(i)
}
//for(let i = oldestBlockNumberBsc; i < currentBlockNumberBsc-10000; i+=10000) {
//const eventsLoop = await Rewards.queryFilter(eventFilterBsc, i, i+10000)
// eventsBsc = eventsBsc.concat(eventsLoop)
//console.log(i)
//}
console.log('a')
}
when iterating if your certain that you need the zero index you could just make a condition inside your loop, if(i == 0){wanted action}
Related
I'm trying to get the quantity of for example: DragonBall, it would return x3 or Featured it would return x2 etc, however I have tried this method with just the spammed response of 2
let data = mockdata.forEach(function (i) {
count[i] = (count[i] || 0) + 1;
console.log(count[i] = (count[i] || 0) + 1)
});
[
'Daily',
'DragonBall1B',
'DragonBall2B',
'DragonBall3B',
'Featured',
'Featured2',
'SquadOrigins',
'SquadOrigins2'
]
API used to retrieve the above information:
https://fortnitecontent-website-prod07.ol.epicgames.com/content/api/pages/fortnite-game/shop-sections
A regular expression can remove the first instance of digits (along with whatever follows) to get you to the key you're interested in grouping on.
const mockdata = [
'Daily',
'DragonBall1B',
'DragonBall2B',
'DragonBall3B',
'Featured',
'Featured2',
'SquadOrigins',
'SquadOrigins2'
]
const count = {};
mockdata.forEach((str) => {
const key = str.replace(/\d+.*/, '');
count[key] = (count[key] || 0) + 1;
});
console.log(count.DragonBall);
const arr = [
'Daily',
'DragonBall1B',
'DragonBall2B',
'DragonBall3B',
'Featured',
'Featured2',
'SquadOrigins',
'SquadOrigins2'
]
const count = {};
arr.forEach((str) => {
const key = str.replace(/\d+.*/, "");
count[key] = (count[key] || 0) + 1;
});
let val = Object.entries(count);
let itemName;
let itemNum;
let result = [];
for (var i in val) {
itemName = val[i][0];
itemNum = val[i][1];
result += `${itemName} (x${itemNum})\n`;
}
console.log(result);
I am a newbie with coding and am trying to get the minimum value of a column (of a temporary sheet) and then copy that value and some data from the corresponding row to another sheet. For some reason it seems to work only once during the loop, is it because I'm trying to define a range based on an object?
function create_filter(){
const ss = SpreadsheetApp.getActiveSpreadsheet();
const sheet1 = ss.getSheetByName("APperCountry");
const sheet2 =ss.getSheetByName("Tender");
var lanelist = sheet2.getRange(2, 1, sheet2.getLastRow(), 8).getValues();
var country = ('B:B');
var origin = ('E:E');
for(var i=2; i<=lanelist.length;i++){
Logger.log("Filter has been added.");
country = ('B'+i);
Logger.log(country);
var origin = ('E'+i)
var calc = ('M'+i);
var apname = ('N'+i);
const ori = sheet2.getRange(origin);
if(ori.isBlank()){
continue;
}
const range = sheet1.getRange("A:D");
const filter = range.createFilter();
var Ctry = sheet2.getRange(country).getValue();
const Filter_Criteria1 = SpreadsheetApp.newFilterCriteria().whenTextContains(Ctry);
const coll1 = 1;
const add_filter1 = filter.setColumnFilterCriteria(coll1,Filter_Criteria1);
const new_sheet = ss.insertSheet();
new_sheet.setName("AirportDistanceCalc");
var tempsheet = ss.getSheetByName('AirportDistanceCalc');
range.copyTo(new_sheet.getRange(1,1));
var aplist = new_sheet.getRange(2, 1, new_sheet.getLastRow()-1, 8).getValues();
new_sheet.getRange(1,5,1,1).setValue("Origin")
new_sheet.getRange(1,6,1,1).setValue("DistanceKM")
for(var j=0; j<aplist.length;j++){
Logger.log(origin);
ori.copyTo(new_sheet.getRange(j+2,5));
mainFun()
}
let comparisonRange = tempsheet.getRange("F2:F");
let comparisonRangeValues = comparisonRange.getValues().filter(String);
let minimum = comparisonRangeValues[0][0];
comparisonRangeValues.forEach((rowItem, rowIndex) => {
comparisonRangeValues[rowIndex].forEach((columnItem) => {
minimum = Math.min(minimum, columnItem);
});
});
console.log(minimum);
sheet2.getRange(calc).setValue(minimum);
tempsheet.getRange(minimum, 2).copyTo(sheet2.getRange(apname));
if (tempsheet) {
ss.deleteSheet(tempsheet);
}
filter.remove();
}
}
The minimum of a column
function mincolumn(col=1) {
const ss = SpreadsheetApp.getActive();
const sh = ss.getSheetByName("Sheet1");
const min = sh.getRange(1,col,sh.getLastRow()).getValues().flat().filter(e => !isNaN(e)).sort((a,b) => a - b)[0];
Logger.log(min);
}
I am trying to initialize a key class in a node.js program, but the instructions are running in arbitrary order and therefore it is initializing wrong. I've tried both making initialization happen in the definition and in a separate function; neither works. Is there something that I'm missing?
Current code:
class BotState {
constructor() {
this.bios = {}
this.aliases = {};
this.stories = {};
this.nextchar = 0;
}
}
var ProgramState = new BotState();
BotState.prototype.Initialize = function() {
this.bios = {};
var aliases = {};
var nextchar = 0;
this.nextchar = 0;
fs.readdir(biosdir, function (err, files) {
if (err) throw err;
for (var file in files) {
fs.readFile(biosdir + file + ".json", {flag: 'r'}, (err, data) => {
if (err) throw err;
var bio = JSON.parse(data);
var index = bio["charid"];
this.bios[index] = bio;
for (var alias in bio["aliaslist"]) {
this.aliases[bio["aliaslist"][alias].toLowerCase()] = index;
}
if (index >= nextchar) {
nextchar = index + 1;
}
})
}
this.stories = {};
this.nextchar = Math.max(Object.keys(aliases).map(key => aliases[key]))+1;
});
}
ProgramState.Initialize();
Is there some general way to make node.js just... run commands in the order they're written, as opposed to some arbitrary one?
(Apologies if the code is sloppy; I was more concerned with making it do the right thing than making it look nice.)
You are running an asynchronous operation in a loop which causes the loop to continue running and the asynchronous operations finish in some random order so you process them in some random order. The simplest way to control your loop is to switch to the promise-based version of the fs library and then use async/await to cause your for loop to pause and wait for the asynchronous operation to complete. You can do that like this:
const fsp = require('fs').promises;
class BotState {
constructor() {
this.bios = {}
this.aliases = {};
this.stories = {};
this.nextchar = 0;
}
}
var ProgramState = new BotState();
BotState.prototype.Initialize = async function() {
this.bios = {};
this.nextchar = 0;
let aliases = {};
let nextchar = 0;
const files = await fsp.readdir(biosdir);
for (const file of files) {
const data = await fsp.readFile(biosdir + file + ".json", {flag: 'r'});
const bio = JSON.parse(data);
const index = bio.charid;
const list = bio.aliaslist;
this.bios[index] = bio;
for (const alias of list) {
this.aliases[alias.toLowerCase()] = index;
}
if (index >= nextchar) {
nextchar = index + 1;
}
}
this.stories = {};
// there is something wrong with this line of code because you NEVER
// put any data in the variable aliases
this.nextchar = Math.max(Object.keys(aliases).map(key => aliases[key]))+1;
}
ProgramState.Initialize();
Note, there's a problem with your usage of the aliases local variable because you never put anything in that data structure, yet you're trying to use it in the last line of the function. I don't know what you're trying to accomplish there so you will have to fix that.
Also, note that you should never use for/in to iterate an array. That iterates properties of an object which can include more than just the array elements. for/of is made precisely for iterating an iterable like an array and it also saves the array dereference too as it gets you each value, not each index.
I have trouble to make functions inside for loop to run synchrosely
Inside EmployeePrint.js
fillData(item, taxObj) {
let fullName = item.getFullName();
let timePeriod = item.getTimePeriod();
let grossIncome = item.getGrossIncome();
let incomeTax = item.getIncomeTax(taxObj);
let netIncome = item.getNetIncome();
let mySuper = item.getSuper();
this.name = fullName;
this.payPeriod = timePeriod;
this.grossIncome = grossIncome;
this.incomeTax = incomeTax;
this.netIncome = netIncome;
this.mySuper = mySuper;
return this;
}
item is employee object. It has some methods and I run it inside fillData
async print(arr, fileName, taxObj) {
let buf = [];
arr.map(async (item) => {
let ep = new EmployeePrint();
ep = ep.fillData(item, taxObj);
buf.push(ep);
});
return await this.printPromise(buf, fileName);
}
After the fill data, I push employee object into array for printing later.
My issue is that I don't know how to make sure all funcs completed in each iteration.
Full project here: https://github.com/kenpeter/mb_new/tree/extend_base
For starters, you should call forEach and push into buf, or just use the returned value from map instead of even creating buf.
Second, you should use a for loop if you want to await inside a loop (not map or forEach) or simply map to promises and await all.
async print(arr, fileName, taxObj) {
let buf = [];
const promises = arr.map((item) => {
let ep = new EmployeePrint();
ep = ep.fillData(item, taxObj);
buf.push(ep);
return this.printPromise(buf, fileName);
});
await Promise.all(promises)
}
EDIT: I'm using node v8.0.0
I just started learning how to access SQL databases with node-postgres, and I'm having a little bit of trouble accessing multiple databases to collect the data in a work able format, particularly with executing multiple queries within forEach loops. After a few tries, I'm trying async/await, but I get the following error:
await client.connect()
^^^^^^
SyntaxError: Unexpected identifier
When I tried using a pool or calling .query sequentially, I would get something along the lines of
1
[]
could not connect to postgres Error: Connection terminated
Here is an abbreviated version of my code:
const { Client } = require('pg');
const moment = require('moment');
const _ = require('lodash');
const turf = require('#turf/turf');
const connString = // connection string
var collected = []
const CID = 300
const snaptimes = // array of times
var counter=0;
const client = new Client(connString);
function createArray(i,j) {
// return array of i arrays of length j
}
await client.connect()
snaptimes.forEach(function(snaptime){
var info = {}; // an object of objects
// get information at given snaptime from database 1
const query1 = // parametrized query selecting two columns from database 1
const result1 = await client.query(query1, [CID,snaptime]);
var x = result1.rows;
for (var i = 0; i < x.length; i++) {
// store data from database 1 into info
// each row is an object with two fields
}
// line up subjects on the hole
const query2 = // parametrized query grabbing JSON string from database 2
const result2 = await client.query(query2, [CID,snaptime]);
const raw = result2.rows[0].JSON_col;
const line = createArray(19,0); // an array of 19 empty arrays
for (var i = 0; i < raw.length; i++) {
// parse JSON object and record data into line
}
// begin to collect data
var n = 0;
var g = 0;
// walk down the line
for (var i = 18; i > 0; i--) {
// if no subjects are found at spot i, do nothing, except maybe update g
if ((line[i] === undefined || line[i].length == 0) && g == 0){
g = i;
} else if (line[i] !== undefined && line[i].length != 0) {
// collect data for each subject if subjects are found
line[i].forEach(function(subject){
const query 3 = // parametrized query grabbing data for each subject
const result3 = await client.query(query3,[CID,subject,snaptime]);
x = result3.rows;
const y = moment(x[0].end_time).diff(moment(snaptime),'minutes');
var yhat = 0;
// the summation over info depends on g
if (g===0){
for (var j = i; j <= 18; j++){
yhat = moment.duration(info[j].field1).add(yhat,'m').asMinutes();
}
} else {
for (var j = i; j <= 18; j++){
if (i<j && j<g+1) {
yhat = moment.duration(info[j].field2).add(yhat,'m').asMinutes();
} else {
yhat = moment.duration(info[j].field1).add(yhat,'m').asMinutes();
}
}
}
collected.push([y,yhat,n,i]);
});
}
n+=line[i].length;
g=0;
}
// really rough work-around I once used for printing results after a forEach of queries
counter++;
if (counter===snaptimes.length){
console.log(counter);
console.log(collected);
client.end();
}
});
The problem is caused by your forEach callback not being async:
snaptimes.forEach(function(snaptime){
should be:
snaptimes.forEach(async function (snaptime) {
for the await to be recognizable at all.
Keep in mind that an async function returns immediately and it returns a promise that gets eventually resolved by return statements of the async function (or rejected with uncaught exceptions raised inside the async function).
But also make sure your Node version supports async/await:
Since Node 7.6 it can be used with no --harmony flag.
In Node 7.x before 7.6 you have to use the --harmony flag.
It was not available in Node before 7.0.
See: http://node.green/#ES2017-features-async-functions
Also note that you can use await only inside of functions declared with the async keyword. If you want to use it in the top level of your script or module then you need to wrap it in an immediately invoked function expression:
// cannot use await here
(async () => {
// can use await here
})();
// cannot use await here
Example:
const f = () => new Promise(r => setTimeout(() => r('x'), 500));
let x = await f();
console.log(x);
prints:
$ node t1.js
/home/rsp/node/test/prom-async/t1.js:3
let x = await f();
^
SyntaxError: Unexpected identifier
but this:
const f = () => new Promise(r => setTimeout(() => r('x'), 500));
(async () => {
let x = await f();
console.log(x);
})();
prints:
$ node t2.js
x
after 0.5s delay, as expected.
On versions of Node that don't support async/await the first (incorrect) example will print:
$ ~/opt/node-v6.7.0/bin/node t1.js
/home/rsp/node/test/prom-async/t1.js:3
let x = await f();
^
SyntaxError: Unexpected identifier
and the second (correct) example will print a different error:
$ ~/opt/node-v6.7.0/bin/node t2.js
/home/rsp/node/test/prom-async/t2.js:3
(async () => {
^
SyntaxError: Unexpected token (
It's useful to know because Node versions that don't support async/await will not give you a meaningful error like "async/await not supported" or something like that, unfortunately.
Make sure that you should use async block outside like:
async function() {
return await Promise.resolve('')
}
And it is default supported after node 7.6.0. Before 7.6.0, you should use --harmony option to work for it.
node -v first to check your version.
First of all, you don't know enough about async-await just yet. don't worry, it's actually quite easy; but you need to read the documentation to be able to use that stuff.
More to the point, the problem with your code is that you can only await inside async functions; you're doing that outside of any function.
First of all, here's the solution that is closest to the code you wrote:
const { Client } = require('pg');
const moment = require('moment');
const _ = require('lodash');
const turf = require('#turf/turf');
const connString = // connection string
var collected = []
const CID = 300
const snaptimes = // array of times
var counter=0;
const client = new Client(connString);
function createArray(i,j) {
// return array of i arrays of length j
}
async function processSnaptime (snaptime) {
var info = {}; // an object of objects
// get information at given snaptime from database 1
const query1 = // parametrized query selecting two columns from database 1
const result1 = await client.query(query1, [CID,snaptime]);
var x = result1.rows;
for (var i = 0; i < x.length; i++) {
// store data from database 1 into info
// each row is an object with two fields
}
// line up subjects on the hole
const query2 = // parametrized query grabbing JSON string from database 2
const result2 = await client.query(query2, [CID,snaptime]);
const raw = result2.rows[0].JSON_col;
const line = createArray(19,0); // an array of 19 empty arrays
for (var i = 0; i < raw.length; i++) {
// parse JSON object and record data into line
}
// begin to collect data
var n = 0;
var g = 0;
// walk down the line
for (var i = 18; i > 0; i--) {
// if no subjects are found at spot i, do nothing, except maybe update g
if ((line[i] === undefined || line[i].length == 0) && g == 0){
g = i;
} else if (line[i] !== undefined && line[i].length != 0) {
// collect data for each subject if subjects are found
line[i].forEach(function(subject){
const query 3 = // parametrized query grabbing data for each subject
const result3 = await client.query(query3,[CID,subject,snaptime]);
x = result3.rows;
const y = moment(x[0].end_time).diff(moment(snaptime),'minutes');
var yhat = 0;
// the summation over info depends on g
if (g===0){
for (var j = i; j <= 18; j++){
yhat = moment.duration(info[j].field1).add(yhat,'m').asMinutes();
}
} else {
for (var j = i; j <= 18; j++){
if (i<j && j<g+1) {
yhat = moment.duration(info[j].field2).add(yhat,'m').asMinutes();
} else {
yhat = moment.duration(info[j].field1).add(yhat,'m').asMinutes();
}
}
}
collected.push([y,yhat,n,i]);
});
}
n+=line[i].length;
g=0;
}
// really rough work-around I once used for printing results after a forEach of queries
counter++;
if (counter===snaptimes.length){
console.log(counter);
console.log(collected);
}
}
async function run () {
for (let snaptime of snaptimes) {
await processSnaptime(snaptime);
}
}
/* to run all of them concurrently:
function run () {
let procs = [];
for (let snaptime of snaptimes) {
procs.push(processSnaptime(snaptime));
}
return Promise.all(procs);
}
*/
client.connect().then(run).then(() => client.end());
client.connect returns a promise and I use then to call run once it's resolved. When that part is over, client.end() can be called safely.
run is an async function, therefore it can use await to make the code more readable. The same goes for processSnaptime.
Of course I can't actually run your code, so I can only hope I didn't make any mistakes.