Forem: ishwar

Delete digits after two decimal point without rounding its value in flutter?

ishwar — Tue, 02 Jun 2020 15:22:10 +0000

Mar 28 '19 Comments: 3 Answers: 8

var num1 = 10.12345678

What should i do with num1 to delete digits after two decimal point without rounding its value.
I need output as 10.12

import 'package:flutter/material.dart';

void main() => runApp(MaterialApp(
      title: ' Delete digits after two decimal point ',
      theme: ThemeData(primarySwatch: Colors.blue),
      home: MyHome(),
    ));

class MyHome extends

…

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why sometimes npm install is not working on mac?

ishwar — Tue, 02 Jun 2020 15:21:54 +0000

Jan 12 '19 Comments: 4 Answers: 3

I have created nodejs project when i am running command npm install it is failing with some error

The same project is working on ubuntu system but when i clone this code on mac system and try to run npm install it failed with some error

I think there is…

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Error installing Docker - curl: (23) Failed writing body (0 != 13847)

ishwar — Tue, 02 Jun 2020 15:21:30 +0000

Jun 26 '18 Comments: 3 Answers: 3

I am trying to install docker with curl -fsSL get.docker.com -o get-docker.sh

it returns:

curl: (23) Failed writing body (0 != 13847)

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Vscode Ctrl+V is not working

ishwar — Tue, 02 Jun 2020 15:21:07 +0000

Jul 25 '18 Comments: 1 Answers: 23

In Visual Studio Code Ctrl+V is not working on editor.

However from the command palette Ctrl+Shift+V is working.

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Google fonts blocked by Content Security Policy

ishwar — Tue, 02 Jun 2020 15:20:20 +0000

Jun 30 '18

Try google fonts without https , http://fonts.googleapis.com/css?family=Poppins:300,400,500,600,700%7CRoboto:300,400,500,600,700%27

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How to solve SocketException: Failed host lookup: 'www.xyz.com' (OS Error: No address associated with hostname, errno = 7)

ishwar — Tue, 02 Jun 2020 15:13:38 +0000

Apr 6 '19

317

Adding internet permission is not only a solution.
You also have to make sure that you are online whether it is mobile or emulator

Make sure you are online whether it is mobile or emulator

Make sure you have given internet permission in your app's android/app/src/main/AndroidManifest.xml

<uses-permission android:name="android.permission.INTERNET"/>

</p>

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monodb export inner json fields

ishwar — Thu, 16 May 2019 11:28:09 +0000

mongoexport — host localhost — db userdata — collection users — csv — out text.csv — fields profile.fname,profile.email

npm install .staging issue

ishwar — Sun, 27 Jan 2019 09:40:03 +0000

got it solved by removing `package-lock.json’ file, .npm file , node_modules file and cleaning npm cache
Required steps:

npm install npm@latest -g
npm cache clean — force
rm -rf ~/.npm
rm -rf node_modules
rm -f package-lock.json

In npm install .staging issue, When you run npm install, it creates the node_modules folder but all the modules go into a subfolder called .staging

Blockchain vs traditional database

ishwar — Thu, 17 Jan 2019 18:27:03 +0000

In a traditional database, a client can perform four functions on data: Create, Read, Update, and Delete (collectively known as the CRUD commands) Where as in Blockchain every user can be sure that the data they are retrieving is uncorrupted and unaltered since the moment it was recorded

https://thepracticaldev.s3.amazonaws.com/i/o9wmvhk49g7zqf3ogtkm.png

What is Cryptocurrency exchange?

ishwar — Thu, 17 Jan 2019 18:23:04 +0000

Cryptocurrency exchange allows users to buy/sell cryptocurrency.
A cryptocurrency exchange or a digital currency exchange (DCE) is a business that allows customers to trade cryptocurrencies,
Businesses that allow customers to trade digital currencies for other assets, such as conventional fiat money, or different digital currencies. They can be market makers that typically take the bid/ask spreads as transaction commissions for their services or simply charge fees as a matching platform.

https://thepracticaldev.s3.amazonaws.com/i/t75n8sh05zzpy1u76g06.png
How does a Cryptocurrency Exchange Start?

For an exchange to function, there needs to be both bids and asks simultaneously. If there is no asks, then no one can buy that specific cryptocurrency therefore there is no volume/trades.

How to generate mnemonic?

ishwar — Wed, 12 Dec 2018 07:25:17 +0000

var bip39 = require(“bip39”);

// You can generate a mnemonic seed from bip39 library

var mnemonic = “ishwar chandra tiwari…”;

What is HD derivation path?

ishwar — Wed, 12 Dec 2018 07:21:55 +0000

The HD derivation path is a string that makes it easy to handle multiple crypto currencies (assuming they all use the same signature algorithms), multiple blockchains, multiple accounts, and so on.
The HD derivation path is defined as :
m / purpose' / coin_type' / account' / change / address_index