zsv
Ditto
zsv | Ditto | |
---|---|---|
27 | 93 | |
231 | 4,768 | |
2.2% | 2.9% | |
9.1 | 8.3 | |
10 days ago | 23 days ago | |
C | C | |
MIT License | GNU General Public License v3.0 only |
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zsv
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How fast can you parse a CSV file in C#?
Haven't yet seen any of these beat https://github.com/liquidaty/zsv when real-world constraints are applied (e.g. we no longer assume that line ends are always \n, or that there are no dbl-quote chars, embedded commas/newlines/dbl-quotes). And maybe under the artificial conditions as well.
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CSVs Are Kinda Bad. DSVs Are Kinda Good
I cannot imagine any way it is worth anyone's time to follow this article's suggestion vs just using something like zsv (https://github.com/liquidaty/zsv, which I'm an author of) or xsv (https://github.com/BurntSushi/xsv/edit/master/README.md) and then spending that time saved on "real" work
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Analyzing multi-gigabyte JSON files locally
If it could be tabular in nature, maybe convert to sqlite3 so you can make use of indexing, or CSV to make use of high-performance tools like xsv or zsv (the latter of which I'm an author).
https://github.com/BurntSushi/xsv
https://github.com/liquidaty/zsv/blob/main/docs/csv_json_sql...
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Show HN: Up to 100x Faster FastAPI with simdjson and io_uring on Linux 5.19
Parsing CSV doesn't have to be slow if you use something like xsv or zsv (https://github.com/liquidaty/zsv) (disclaimer: I'm an author). The speed of CSV parsers is fast enough that unless you are doing something ultra-trivial such as "count rows", your bottleneck will be elsewhere.
The benefits of CSV are:
- human readable
- does not need to be typed (sometimes, data in the raw such as date-formatted data is not amenable to typing without introducing a pre-processing layer that gets you further from the original data)
- accessible to anyone: you don't need to be a data person to dbl-click and open in Excel or similar
The main drawback is that if your data is already typed, CSV does not communicate what the type is. You can alleviate this through various approaches such as is described at https://github.com/liquidaty/zsv/blob/main/docs/csv_json_sql..., though I wouldn't disagree that if you can be assured that your starting data conforms to non-text data types, there are probably better formats than CSV.
The main benefit of Arrow, IMHO, is less as a format for transmitting / communicating but rather as a format for data at rest, that would benefit from having higher performance column-based read and compression
- Yq is a portable yq: command-line YAML, JSON, XML, CSV and properties processor
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csvkit: Command-line tools for working with CSV
I wanted so much to use csvkit and all the features it had, but its horrendous performance made it unscalable and therefore the more I used it, the more technical debt I accumulated.
This was one of the reasons I wrote zsv (https://github.com/liquidaty/zsv). Maybe csvkit could incorporate the zsv engine and we could get the best of both worlds?
Examples (using majestic million csv):
---
- Ask HN: Programs that saved you 100 hours? (2022 edition)
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Show HN: Split CSV into multiple files to avoid the Excel's 1M row limitation
}
```
This of course assumes that each line is a single record, so you'll need some preprocessing if your CSV might contain embedded line-ends. For the preprocessing, you can use something like the `2tsv` command of https://github.com/liquidaty/zsv (disclaimer: I'm its author), which converts CSV to TSV and replaces newline with \n.
You can also use something like `xsv split` (see https://lib.rs/crates/xsv) which frankly is probably your best option as of today (though zsv will be getting its own shard command soon)
- Run SQL on CSV, Parquet, JSON, Arrow, Unix Pipes and Google Sheet
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Ask HN: Best way to find help creating technical doc (open- or closed-source)?
Am looking for one-time help creating documentation (e.g. man pages, tutorials) for open source project (e.g. https://github.com/liquidaty/zsv) as well as product documentation for commercial products, but not enough need for a full-time job. Requires familiarity with, for lack of better term, data janitorial work, and preferably with methods of auto-generating documentation. Any suggestions as to forums or other ways to find folks who might fit the bill for ad-hoc or part-time work of this nature?
Ditto
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The One Productivity Tool You Didn't Know You Can't Live Without
Ditto (Windows) - One of the most popular clipboard managers for Windows. Free, efficient and gets the job done.
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IrfanView
The most famous is the clipboard one (https://ditto-cp.sourceforge.io/). I'd be surprised if they were referring to another "Ditto" software.
- Ask HN: What clipboard manager do you use?
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What's the best clipboard software you've come across??
Ditto works well for me. If you have a cloud based file storage service like Google Drive or Dropbox, put the ditto database file in that folder and you'll also have an auto backup.
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Learn AutoHotKey by stealing my scripts
In case you are not aware: https://ditto-cp.sourceforge.io/
- Ditto: Open-Source Clipboard Manager for Windows
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Best way to distribute exe without code certificate
For example: the wonderful Ditto Clipboard Manager is both an old-style .msi installer here https://ditto-cp.sourceforge.io/, but it is also on Crapstore here: https://apps.microsoft.com/store/detail/ditto-clipboard/9NBLGGH3ZBJQ?hl=en-us&gl=us
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Ctrl+C and right click+copy only work after 3 to 4 tries, any tips on what the reason is? is my windows' clipboard bugged?
I highly recommend you use a clipboard monitor. I use Ditto (download link, Windows store link). It can help diagnose problems like this by letting you see the contents of the clipboard (using <`> after copying something.
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code issue
I’ll use the opportunity to recommend Ditto. A great clipboard manager that also allows for easy pasting as plain text, white space removed, linefeed cleanups and more.
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Looking for SnipDo like app for Windows
Looks like some sort of clipboard manager? I use Ditto, it's free I think and you can customize it to do all sorts of things with text/images you copy to the clipboard. https://ditto-cp.sourceforge.io/
What are some alternatives?
tsv-utils - eBay's TSV Utilities: Command line tools for large, tabular data files. Filtering, statistics, sampling, joins and more.
Flycut - Clean and simple clipboard manager for developers
ClickHouse - ClickHouse® is a real-time analytics database management system
Hacker-Typer - Hacker Typer is a fun joke for every person who wants to look like a cool hacker!
DuckDB - DuckDB is an analytical in-process SQL database management system
GPaste - Clipboard management system