Relocating Declarations Can Enhance Performance

Relocating Declarations Can Enhance Performance

On some occasions, the performance boost that can result from moving declarations is quite considerable. Consider this example:

   void use()  {    string  s1;    if (condition == false){      return; //s1 was not needed    }       s1 = "hello";    // s1 used only here    return;   }

The local object s1 is unconditionally constructed and destroyed in use(), even if it is not used at all. As you can see, when the condition in the if-statement is false, the unnecessary construction and destruction of s1 are still unavoidable. Nevertheless, with a little help from the programmer, the unnecessary construction and destruction of s1 can be eliminated. All that is required is to relocate the declaration of s1 to the point where it is actually used:

   void use(){    if (condition == false){      return;     }       string  s1; //moved from the block's beginning    //use s1 here    return;   }

Consequently, the object s1 is constructed only when it is really needed. When it is not needed, s1 is neither constructed nor destroyed. Thus, simply by moving the declaration of s1, you eliminate two unnecessary member function calls.

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

ransomware cyber attack

Why Is Ransomware Such a Major Threat?

One of the most significant cyber threats faced by modern organizations is a ransomware attack. Ransomware attacks have grown in both sophistication and frequency over the past few years, forcing