optimization Archives

C++, Programming

IT Nursery

Why can lambdas be better optimized by the compiler than plain functions?

In his book The C++ Standard Library (Second Edition) Nicolai Josuttis states that lambdas can be better optimized by the compiler than plain ...

June 3, 2022
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javascript, Programming

IT Nursery

Detect If Browser Tab Has Focus

Is there a reliable cross-browser way to detect that a tab has focus. The scenario is that we have an application that polls ...

June 3, 2022
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optimization, Programming

IT Nursery

What optimizations can GHC be expected to perform reliably?

GHC has a lot of optimizations that it can perform, but I don’t know what they all are, nor how likely they are ...

June 2, 2022
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C++, Programming

IT Nursery

What is the effect of ordering if…else if statements by probability?

Specifically, if I have a series of if…else if statements, and I somehow know beforehand the relative probability that each statement will evaluate ...

June 2, 2022
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Java, Programming

IT Nursery

Java Reflection Performance

Does creating an object using reflection rather than calling the class constructor result in any significant performance differences? 14 Answers 14

June 2, 2022
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C++, Programming

IT Nursery

Is it better to use std::memcpy() or std::copy() in terms to performance?

Is it better to use memcpy as shown below or is it better to use std::copy() in terms to performance? Why? char *bits ...

June 1, 2022
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Programming, Python

IT Nursery

Why is early return slower than else?

This is a follow-up question to an answer I gave a few days back. Edit: it seems that the OP of that question ...

June 1, 2022
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WordPress

IT Nursery

Can’t move jQuery to footer

Below two methods did not help me. My jQuery is always on the head section. What can be the reason? Method 1: (adding ...

June 1, 2022
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javascript, Programming

IT Nursery

What is the difference between Unary Plus/Number(x) and parseFloat(x)?

I’m asking this just for the sake of shaving a few bytes. I know I can use +x (unary plus) instead of Number(x). ...

May 31, 2022
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C++, Programming

IT Nursery

Measuring execution time of a function in C++

I want to find out how much time a certain function takes in my C++ program to execute on Linux. Afterwards, I want ...

May 31, 2022
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