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Topics: visitor-pattern

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2 repositories by Attention Score · May 7, 2026 – Nov 2, 2026 (UTC)

Topic: visitor-pattern

1.solodon4 / Mach7

Functional programming style pattern-matching library for C++

pattern-matching
pattern
variant
visitor
visitor-pattern
algebraic-data-types
+1 more

C++Other license1.3K total76 forks

+12 stars

from 1,310 · score 2.56

2.derive4j / derive4j

Java 8 annotation processor and framework for deriving algebraic data types constructors, pattern-matching, folds, optics and typeclasses.

algebraic-data-types
optics
functional-programming
algebra
visitor-pattern
annotation-processor
+11 more

Java No license577 total46 forks

+2 stars

from 575 · score 1.10

Order: Attention Score

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Ranked by stars gained in the window. The score is the natural log of one plus that gain, so a repository's rank is exactly its star gain's rank.

score = log1p(net stars gained in the trailing T complete UTC days)

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The longest window is 180 days. Star History from the Repository Host goes back at most 180 days before a repository's first Observation. A longer window needs more days of Observations first. A repository younger than the window is not ranked in it.

The filters narrow the same eligible repositories. A repository matches the topics when it has any of them. Total stars is the count now. Last push and creation on the Repository Host count back from the start of today (UTC). The counts beside the languages, licenses, and topics include all ranked repositories in the window. A Tag holds the repositories that have it; see Tags.

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