Be Cautious with Equality Tests on Literal Strings

Be Cautious with Equality Tests on Literal Strings

It is perfectly legal to use of the equality operator to compare literal strings. However, the results might be surprising:

 bool eq;eq = "Mungojerrie" == "Rumpleteazer"; //not what you expect

What does this code snippet do? Let’s parse the following expression carefully:

 "Mungojerrie" == "Rumpleteazer";

The literal strings “Mungojerrie”and “Rumpleteazer” are both of type const char *. Thus, the expression checks whether the two memory addresses of the literal strings are identical and returns a Boolean result accordingly. However, the strings themselves are not compared, to the bafflement of the programmer. The right way of comparing literal strings is by using the standard function strcmp(). Alternatively, you can wrap the literal strings in two std::string objects and compare them.

Share the Post:
Heading photo, Metadata.

What is Metadata?

What is metadata? Well, It’s an odd concept to wrap your head around. Metadata is essentially the secondary layer of data that tracks details about the “regular” data. The regular

XDR solutions

The Benefits of Using XDR Solutions

Cybercriminals constantly adapt their strategies, developing newer, more powerful, and intelligent ways to attack your network. Since security professionals must innovate as well, more conventional endpoint detection solutions have evolved

AI is revolutionizing fraud detection

How AI is Revolutionizing Fraud Detection

Artificial intelligence – commonly known as AI – means a form of technology with multiple uses. As a result, it has become extremely valuable to a number of businesses across

AI innovation

Companies Leading AI Innovation in 2023

Artificial intelligence (AI) has been transforming industries and revolutionizing business operations. AI’s potential to enhance efficiency and productivity has become crucial to many businesses. As we move into 2023, several

data fivetran pricing

Fivetran Pricing Explained

One of the biggest trends of the 21st century is the massive surge in analytics. Analytics is the process of utilizing data to drive future decision-making. With so much of

kubernetes logging

Kubernetes Logging: What You Need to Know

Kubernetes from Google is one of the most popular open-source and free container management solutions made to make managing and deploying applications easier. It has a solid architecture that makes