Go Math Science

Check if a string has a white space at any position

by Dr. Osama M. Khaled — published May 21, 2021 — last modified Jul 19, 2022 04:23 AM — filed under: Java, Algorithm, Programming Language

It is important sometimes to check a string and make sure that it does contain a white space (e.g. space, new line, tab, etc ...).

Located in Computing / Programming / Java

Check if a string is Null or Empty

by Dr. Osama M. Khaled — published May 17, 2021 — last modified Jul 19, 2022 04:23 AM — filed under: Java, Algorithm, Programming Language

It is sometimes not practical to work out a string object immediately before validating if it is null or not

Located in Computing / Programming / Java

Make a phone number callable in Android

by Dr. Osama M. Khaled — published May 23, 2021 — last modified Jul 19, 2022 04:23 AM — filed under: Java, Algorithm, Programming Language

You may want to present a number and make it callable.

Located in Computing / Programming / Java

Variables and Memory Optimization

by Dr. Osama M. Khaled — published May 27, 2021 — last modified Jul 19, 2022 04:23 AM — filed under: Java, Algorithm, Programming Language

When you start coding, you need to be mindful to memory usage and leakage.

Located in Computing / Programming / Java

Python

by Dr. Osama M. Khaled — published Sep 27, 2022 — last modified Oct 28, 2023 12:40 AM

Python Programming Language

Located in Computing / Programming

Introduction

by Dr. Osama M. Khaled — published Sep 27, 2022 — last modified Oct 28, 2023 05:26 AM Located in Computing / Programming / Python

Software Engineering

by Dr. Osama M. Khaled — published Jun 07, 2022 — last modified Sep 12, 2025 01:58 AM

Software engineering is an engineering discipline that is concerned with all aspects of software production

Located in Computing

Architecture

by Dr. Osama M. Khaled — published Sep 22, 2020 — last modified Oct 28, 2023 12:40 AM

The architecture of the software system set the the foundations for designs and give guidance for all technical teams to add their solutions without going ...

Located in Computing / Software Engineering

Introduction

by Dr. Osama M. Khaled — published Jun 07, 2022 — last modified Oct 31, 2023 09:30 PM

Get ready to know more about software architecture

Located in Computing / Software Engineering / Architecture

What are the trade-off choices between performance and security?

by Dr. Osama M. Khaled — published Sep 22, 2020 — last modified Jul 19, 2022 04:23 AM — filed under: Architecture

A trade-off decision that many solution architects struggle to make is what requirements to compromise if security and performance requirements conflict? ...

Located in Computing / Software Engineering / Architecture

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