GJSON VS fzf

Someone made a benchmark of serialization libraries in go [1], and I was surprised to see gobs is one of the slowest ones, specially for decoding. I suspect part of the reason is that the API doesn't not allow reusing decoders [2]. From my explorations it seems like both JSON [3], message-pack [4] and CBOR [5] are better alternatives.

By the way, in Go there are a like a million JSON encoders because a lot of things in the std library are not really coded for maximum performance but more for easy of usage, it seems. Perhaps this is the right balance for certain things (ex: the http library, see [6]).

There are also a bunch of libraries that allow you to modify a JSON file "in place", without having to fully deserialize into structs (ex: GJSON/SJSON [7] [8]). This sounds very convenient and more efficient that fully de/serializing if we just need to change the data a little.

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1: https://github.com/alecthomas/go_serialization_benchmarks

2: https://github.com/golang/go/issues/29766#issuecomment-45492...

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3: https://github.com/goccy/go-json

4: https://github.com/vmihailenco/msgpack

5: https://github.com/fxamacker/cbor

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6: https://github.com/valyala/fasthttp#faq

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7: https://github.com/tidwall/gjson

8: https://github.com/tidwall/sjson

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I don't think there is a way to sort an array, though. However, there is an option to have keys sorted. Personally, I don't think there is much annoyance in that. One could just pipe `jj` output to `sort | uniq -c`.

[0]: https://github.com/tidwall/gjson/blob/master/SYNTAX.md

I’m using GJSON, so far so good!

If the fields you need are just a small subset of the whole json, maybe https://github.com/tidwall/gjson might be of use to read only those (using jsonpath) without needing to create complete corresponding structs.

Thank you for the reminder, it's never too much of it :) Didn't say it, but the code was pprof-iled many times and i can really say it's well optimized. I use own libraries with on-the-fly equations (sums, avgs, emas, stds, ...) wherever possible and also made custom json parser as json messages are in fixed format, so the parser is about 10x faster than gjson. I optimized it to the point that I avoided using maps, and rather iterate via slice where ever possible.

You are right, for learning purposes this fit my needs, but I can imagine an approach similar to this repo: https://github.com/tidwall/gjson

https://github.com/tidwall/gjson is a relatively sensible library if this is something you need to deal with and the structure is actually unknowable.

In addition, I think bash's `operate-and-get-next` can be very helpful. When you go back through your shell history, you can hit Ctrl+o instead of enter and it will execute the command then put the next one in your history on the command line, and keep track of where you are in your history. This way, you can rerun a bunch of commands by going to the first one and Ctrl+o till you are done. And you can edit those commands and hit Ctrl+o and still go to the next previously run command.

Note: fzf's history search feature breaks this. https://github.com/junegunn/fzf/issues/2399

fzf : https://github.com/junegunn/fzf

Those are the most used aliases in my gitconfig.

"git fza" shows a list of modified/new files in an fzf window, and you can select each file with tab plus arrow keys. When you hit enter, those files are fed into "git add". Needs fzf: https://github.com/junegunn/fzf

"git gone" removes local branches that don't exist on the remote.

"git root" prints out the root of the repo. You can alias it to "cd $(git root)", and zip back to the repo root from a deep directory structure. This one is less useful now for me since I started using zoxide to jump around. https://github.com/ajeetdsouza/zoxide

> my history is so noisy I had to find another way

The fzf search syntax can help, if you become familiar with it. It is also supported in atuin [2].

[1]: https://github.com/junegunn/fzf#search-syntax

[2]: https://docs.atuin.sh/configuration/config/#fuzzy-search-syn...

You call it with `n` and get an interactive fuzzy search for your directories. If you do `n ` instead, it’ll start the find with `` already filled in (and if there’s only one match, jump to it directly). The `ls` is optional but I find that I like having the contents visible as soon as I change a directory.

I’m also including iCloud Drive but excluding the Library directory as that is too noisy. I have a separate `nl` function which searches just inside `~/Library` for when I need it, as well as other specialised `n` functions that search inside specific places that I need a lot.

¹ https://github.com/sharkdp/fd

² https://github.com/junegunn/fzf

View on GitHub

I do find the history pager stuff interesting, but ultimately not of tremendous use for me. I rebound all my history search stuff to use fzf[1] (via a fish plugin for such[2]), and so haven't been aware of the issues

[1] https://github.com/junegunn/fzf

[2] https://github.com/PatrickF1/fzf.fish

You can also use fzf with ripgrep to great effect:

[1]: https://github.com/junegunn/fzf/blob/master/ADVANCED.md#usin...