Technology Archives - Upokary

Generics in Java with example

What is state design pattern?

What are new in Java 14 or new features of Java 14

How to prevent ctrl + s, f12 default action on a web page?

Add new users to an Amazon EC2 Ubuntu instance and allow SSH access

How to define error codes and error messages in Java?

Incompatible types: void cannot be converted to

How to configure W3 Total Cache to use with WooCommerce?

How to do a HTTP API call in ruby on rails?

What is machine learning? What are different types of machine leanring methods?

Flask ImportError: No Module Named Flask in python script

How to generate Rails REST API documentation similar to swagger?

How to check if an element is visible in the current viewport as we scroll?

jQuery html() method ignores script tags from HTML and not executed.

Useful regular expression that every developer should know

How to set environment variables on Mac OS and Ubuntu?

Should we commit yarn.lock and package-lock.json files?

How to start a Java spring boot application using Jenkins X?

FTP: 501 Server cannot accept argument

What are the differences between ASCII and Unicode?

How small should the microservice be for applications?

What is microservice? What are the properties of microservice?

Difference between session.timeout.ms and max.poll.interval.ms for Kafka

Err:1 ec2.archive.ubuntu.com bionic InRelease Temporary failure

How to install free SSL to nginx with let’s encrypt on ubuntu 18.04?

Permission denied for database “postgres”, User does not have CONNECT privilege.

The Ruby version you are trying to install does not exist on this stack

How to set custom user-agent in Google chrome?

Is there a print_r or var_dump equivalent in Ruby on Rails?

How to render and return html using render_to_string in rails?

When to use primitive and when reference types in Java?

Objects are not valid as a React child found: object with keys

Difference between Arrays.asList(array) and new ArrayList(Arrays.asList(array)) in Java

Job for apache2.service failed. See “systemctl status apache2.service” and “journalctl -xe” for details.

When we should use StringBuilder over String concatenation in Java?

Uncaught (in promise) TypeError: Cannot read property of undefined ReactJS

The module bcrypt_lib was compiled against a different Nodejs version

Design method signatures carefully – effective java

What are the differences between Java primitive types vs boxed primitives?

How to handle server error of data provider in React-admin?

What are the steps to run a ruby and rails project after cloning from Github?

How can we downgrade from ruby 2.7.1 to ruby 2.3.1?

dyld: Library not loaded, Referenced from: Reason: image not found

cannot load such file — openssl when try to install gem install rails

How Jenkins X works with Kubernetes using PROW and Tekton?

How to get the current timestamp in JavaScript?

How to make dynamic variable names in Java?

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