Twenty-three years ago, in his Design Principles and Design Patterns article, Robert "Uncle Bob" Martin boiled down the Liskov substitution principle to the idea that "derived classes should be ...

Java object-oriented programming becomes more impactful when combined with proven design patterns and clear visual modeling. Guided exercises, structured design approaches, and effective diagrams help ...

With a background in financial journalism across national titles, Ruby loves helping people take control of their money and specialises in pensions, tax, banking and benefits. Set as preferred source ...

Government plans to make inheritance tax due on pensions, plus other changes to IHT rules, have seen a leap in people enquiring about the use of trusts to protect their wealth. So what are trusts, and ...

Sean Ross is a strategic adviser at 1031x.com, Investopedia contributor, and the founder and manager of Free Lances Ltd. Robert Kelly is managing director of XTS Energy LLC, and has more than three ...