DynaMix
RE2
DynaMix | RE2 | |
---|---|---|
3 | 49 | |
657 | 8,628 | |
- | 0.5% | |
6.7 | 8.9 | |
about 2 months ago | 2 days ago | |
C++ | C++ | |
MIT License | BSD 3-clause "New" or "Revised" License |
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DynaMix
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DynaMix 2.0.0 Released
The thing is, that if something can be done with vanilla C++ polymorphism, virtual functions and inheritance, the DynaMix equivalent will look clunky and bloated. For example, you can see the exact same thing implemented with virtual functions and inheritance, with std::function and with DynaMix in the unicast benchmark
- vector of objects
RE2
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C Is the Greenest Programming Language
Looking at the benchmark where C++ is worst compared to other languages, it's depending on the library used. I would guess if they used Google's re2 Regex library instead of Boost's, the result would be different.
https://github.com/google/re2
https://github.com/greensoftwarelab/Energy-Languages/blob/ma...
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what does this + do in the regular expression "(^A-Za-z)+"
That page says it just includes "some of the most common special characters", and following the link to the Examples page in turn includes a link to the full list.
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On a Great Interview Question
Python uses backtracking, so this probably isn't O(n), especially with the ability to choose the dictionary.
But with there are non-backtracking matchers which would make this O(n). Here's re2 from https://github.com/google/re2 :
>>> import re2
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RE2 VS hyperscan - a user suggested alternative
2 projects | 17 Mar 2023
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hyperscan VS RE2 - a user suggested alternative
2 projects | 17 Mar 2023
RE2 is a Google regular expression library
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Projects ideas to learn C++/OOP
google's regex library: https://github.com/google/re2
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Regex: is there a difference between * and {0,}, as well as + and {1,}?
I am currently working with Regex, specifically Re2, and was wondering if there is a real difference between the above expressions for repeated sub-regex.
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First release of SPVM::File::Spec - complex regular expressions, file tests, SPVM::Cwd, inheritance
I ported Google RE2, a regular expression library, to SPVM as Resource::Re2, and created SPVM::Regex, a wrapper for it.
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SPVM::File::Basename is released. This is the first module of SPVM using regular expressions.
I searched for I found that there is a Perl compatible regular expression called Google RE2. It is written in C++, and with Google RE2, I can use Perl-compatible regular expressions as a library.
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Ruby 3.2.0 Is from Another Dimension
Yes, but there is an interesting clarification here. RE2 has used the "caching" approach documented in the Ruby bug ticket linked for quite some time (since its birth?): https://github.com/google/re2/blob/954656f47fe8fb505d4818da1...
It is mentioned only briefly in Cox's article on regex matching in the wild. Look for the word "bitstate": https://swtch.com/~rsc/regexp/regexp3.html
I didn't know Perl had implemented this trick too.
The paper[1] cited in the Ruby bug ticket was published very recently. When I first read the Ruby bug ticket, I immediately wondered how they sidestepped the memory use problem. The paper's abstract seems to suggest there is some technique for doing so, as it rebuffs the idea of doing "full" memoization. Alas, I do not have access the paper. (Which is fucking ridiculous.)
[1]: https://ieeexplore.ieee.org/abstract/document/9519427
What are some alternatives?
Serial Communication Library - Cross-platform, Serial Port library written in C++
compile-time-regular-expressions - Compile Time Regular Expression in C++
American Fuzzy Lop - american fuzzy lop - a security-oriented fuzzer
semver.c - Semantic version in ANSI C
SDS - Simple Dynamic Strings library for C
Boost.Signals - Boost.org signals2 module
ZXing - ZXing ("Zebra Crossing") barcode scanning library for Java, Android
libevil - The Evil License Manager
Cppcheck - static analysis of C/C++ code
constexpr-8cc - Compile-time C Compiler implemented as C++14 constant expressions
stb - stb single-file public domain libraries for C/C++