Daniel Lemire
@lemireSoftware performance expert. Ranked in the top 2% of scientists globally (Stanford/Elsevier 2025) and among GitHub's top 1000 developers.
Language Breakdown
Lines of code distribution across 208 owned repositories
T-Shaped Developer
T-shapedDeep in HTML with broad versatility
Collaboration Network
Global Impact visualization
Repos
547
PRs
0
Growth
+18%
Top Collaborators
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Coding Streak
Contribution activity over the past year
Anne-Marie
@The-Real-Anne
Erimel
@Erimelowo
Jaël Champagne Gareau
@jaja360
Sergey Slotin
@sslotin
Scott Gibbons
@asgibbons
Top Repositories
This is a repository for the code posted on my blog
Fast function to parse strings into double (binary64) floating-point values, enforces the RFC 7159 (JSON standard) grammar: 4x faster than strtod
A compressed alternative to the Java BitSet class
A compressed bitmap class in C++.
SIMD-accelerated base64 codecs
a fast heap-based priority queue in JavaScript
A C/C++ header file for fast 32-bit division remainders (and divisibility tests) on 64-bit hardware.
A fast alternative to the modulo reduction
header-only library to validate utf-8 strings at high speeds (using SIMD instructions)
External-Memory Sorting in Java
Open Source Impact
Contributions to external projects
