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Daniel Lemire's blog
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Latest posts
Last updated 1 day ago
Java’s String.indexOf can be slow (quadratic)
1 day ago
In Java, you find the location of a substring using indexOf String...
Parsing IP addresses in C# at crazy speeds
4 days ago
We are all familiar with IP addresses such as 192.168.0.1. They are...
Go 1.27 will make some allocations cheaper
8 days ago
Like most programming languages, Go has both stack allocations, whose lifetime is...
AI programming : are you angry yet?
11 days ago
AI-assisted programming is fast evolving and there is a tension between ‘we...
Profile-guided optimization in Go
14 days ago
When a compiler optimizes your program, it has to guess. Which functions...
How fast is C++26’s std::hive?
21 days ago
C++26 adds a new container to the standard library: std::hive. It is...
Memory-level parallelism: AMD is the king
29 days ago
When your program asks for memory that is not in cache, the...
From Institutions to Individuals: the White House Report on Revitalizing U.S. Scientific Leadership
about 1 month ago
“`In 1945, Vannevar Bush published a report entitled Science: The Endless Frontier...
Using AI to build your own software
about 1 month ago
A few years ago, a friend of mine was stuck. He needed...
X just gave us an interface that AI agents can use. I pointed it at my own posts.
about 1 month ago
I have been on X for a long time. Like most people...
Chatting with an AI Won’t Make You a Top Programmer
2 months ago
When I was a kid, most people did not know how to...