SQLite
ccan
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SQLite | ccan | |
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39 | 13 | |
5,465 | 1,045 | |
- | - | |
0.0 | 3.4 | |
4 days ago | 2 months ago | |
C | C | |
GNU General Public License v3.0 or later | - |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
SQLite
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A SQLite extension that brings column-oriented tables to SQLite
If you are into alternative storage engines for SQLite, there is also an LSM (Log-Structured Merge-tree) extension in the main repository that is not announced nor documented but seems to work. It’s based on the SQLite 4 project.
https://github.com/sqlite/sqlite/tree/master/ext/lsm1
https://www.charlesleifer.com/blog/lsm-key-value-storage-in-...
- SQLite License
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Ask HN: Where do I find good code to read?
The sqlite code base is really well done. Lots of documentation.
https://github.com/sqlite/sqlite
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Show HN: I wrote a RDBMS (SQLite clone) from scratch in pure Python
Especially the VM part: https://github.com/spandanb/learndb-py/blob/master/learndb/v...
Compare it with this: https://github.com/sqlite/sqlite/blob/master/src/vdbe.c
That's said, I'm curious how complete this LearnDB is. SQLite is hard to read not only it's old but also it covers a lot of SQL and following SQL spec makes hings complicated. SQLite has great test suite so it's nice if you run the suit against this implementation.
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SQLite Begin Concurrent
Correct, see the github mirror[1]. I don't know how well supported that feature is compared to main branch. If it was completely stable, then it would have already landed in the main stable branch. Clarity about the roadmap of that branch would be nice.
1. https://github.com/sqlite/sqlite/tree/begin-concurrent
- Why sqlite3 temp files were renamed 'etilqs_*' (2006)
- SQLite builds for WASI since 3.41.0
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SQLite VS sqlite_blaster - a user suggested alternative
2 projects | 17 Mar 2023
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Stop Saying “Technical Debt”
Including comprehensive comments, documentation and tests in a codebase takes time and effort.
Failing to do so creates code that is very difficult to maintain or for someone new to the codebase to understand.
However, time and effort may not be what the organization wants to pay for, and individuals may view their own incomprehensible code as something like job security, as they can't be replaced by someone else easily.
As an example of complicated code that's still well-documented, the open-source sqlite code is a good example, about 1/4 of the B-tree file is comments, every time a variable is defined there's a short note explaining what it's used for, every function has a comment header that's comprehensive, such that someone new to the codebase could construct a map of how it all works fairly quickly. It's a good model for how to avoid the problem:
https://github.com/sqlite/sqlite/blob/master/src/btree.c
- Ce aplicație v-ar plăcea să o studiați code related?
ccan
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Memory leak proof every C program
Hilarious!
But I remember the first time I saw such a program which never freed anything: jitterbug, the simple bug tracker which ran as a CGI script.
It indeed allows a very simple style!
Meanwhile, use ccan/tal (https://github.com/rustyrussell/ccan/blob/master/ccan/tal/_i...) and be happy :)
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Popular Data Structure Libraries in C ?
There's CCAN, maintained by kernel hacker Rusty Russell: http://ccodearchive.net/
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My review of the C standard library in practice
Please note that the above link has been claimed by squatters and isn’t the right link for CCAN anymore! The maintainer suggests [1] just using the GitHub repo [2] instead.
[1] https://lists.ozlabs.org/pipermail/ccan/2022-September/00141...
[2] https://github.com/rustyrussell/ccan/
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[ROAST MY CODE] Implementing generic vector in C
This is a great learning exercise but not very useful because using void* creates practical problems that the compiler cant help you with. IMHO, for a nice vector in C look at https://github.com/rustyrussell/ccan/blob/master/ccan/darray/darray.h
- Common libraries and data structures for C
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Toward a better list iterator for the Linux kernel
For more advanced intrusive lists in C, I've found that ccan's tlist2 (https://github.com/rustyrussell/ccan/blob/master/ccan/tlist2...) provides a decent model here.
Compared to the linux kernel's intrusive lists, it also tracks the offset of the list_node within the structure contained by the list, which eliminates another class of problems. It does still have the "using the iterator after the for loop is over" issue discussed in this article, but it also already tracks the types as Linus proposed doing in the article to resolve the issue.
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Good C Source Code
ccan library https://github.com/rustyrussell/ccan I think it is used also in the linux kernel(?)
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What are your favorite C resources? They can be either for learning or reference.
ccan (analagous to cpan, but for C rather than Perl.)
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Dynamic link list
You could use a discriminated union in your list node. You could use a void pointer in your list node, allocate space as needed and memcpy the date into this space, or don't allocate and store pointers to the original data. You could use an intrusive list, like this.
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The Byte Order Fiasco
The fallacy in the article is that anyone should code these functions. There's plenty of public domain libraries that do this correctly.
https://github.com/rustyrussell/ccan/blob/master/ccan/endian...
What are some alternatives?
sqlcipher - SQLCipher is a standalone fork of SQLite that adds 256 bit AES encryption of database files and other security features.
STC - A modern, user friendly, generic, type-safe and fast C99 container library: String, Vector, Sorted and Unordered Map and Set, Deque, Forward List, Smart Pointers, Bitset and Random numbers.
LevelDB - LevelDB is a fast key-value storage library written at Google that provides an ordered mapping from string keys to string values.
stb - stb single-file public domain libraries for C/C++
RocksDB - A library that provides an embeddable, persistent key-value store for fast storage.
stage0 - A set of minimal dependency bootstrap binaries
sqlite_orm - ❤️ SQLite ORM light header only library for modern C++
chibicc - A small C compiler
bolt
limine - Modern, advanced, portable, multiprotocol bootloader.
phpMyAdmin - A web interface for MySQL and MariaDB
GNU Emacs - Mirror of GNU Emacs