NeTT Posts - Deno

NeTT

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DDeno

•Created by NeTT on 1/20/2024 in #help

If I use FFI with Deno Jupyter, will it not print the shared lib's stdout? (like Rust println!())

6 replies

DDeno

•Created by NeTT on 7/24/2023 in #help

Speed of generators

How fast are JS generators when used as iterators? To be clear, I see the for..of loop being very slow compared to a plain for or while loop when used on arrays. Is it because the for..of loop is inherently slow or because the iterator behind it is slow?

11 replies

DDeno

•Created by NeTT on 7/15/2023 in #help

Custom console.log formatting for a class/object

Is there a way to change the way an object/class is printed in the console? For example, instead of

[1, 2, 3, 4]

[1, 2, 3, 4]

, I want the particular object to be printed as

[1, 2
 3, 4]

[1, 2
 3, 4]

8 replies

DDeno

•Created by NeTT on 5/23/2023 in #help

Uint8Array or Float32Array

Is there any significant difference between using a Float32Array and using a Uint8Array from the same buffer for FFI?

4 replies

DDeno

•Created by NeTT on 1/30/2023 in #help

How do I use std/log?

I'm trying to create a log file. I don't seem to be able to make it work tho.

import { handlers, Logger } from "https://deno.land/std@0.175.0/log/mod.ts";

const file_reg = new handlers.FileHandler("INFO", {
  filename: "./reg_log",
  formatter: "{levelName} {msg}",
});

file_reg.setup();
const logger = new Logger("registration", "INFO", {
  handlers: [file_reg],
});
// Log file is created at this point

logger.info("aaa")
// This part is not written to the file

import { handlers, Logger } from "https://deno.land/std@0.175.0/log/mod.ts";

const file_reg = new handlers.FileHandler("INFO", {
  filename: "./reg_log",
  formatter: "{levelName} {msg}",
});

file_reg.setup();
const logger = new Logger("registration", "INFO", {
  handlers: [file_reg],
});
// Log file is created at this point

logger.info("aaa")
// This part is not written to the file

1 replies

DDeno

•Created by NeTT on 1/16/2023 in #help

What would be the best third party module implementing `deflate()`?

Currently using npm:pako but I'd like to avoid npm specifiers (modules in general).

1 replies

DDeno

•Created by NeTT on 12/28/2022 in #help

What postgres module should I use?

I've been using /x/postgres for almost a year but I see that /x/postgresjs has been updated more recently (and I've seen some articles use it here and there). Does it have any advantage over /x/postgres?

2 replies

DDeno

•Created by NeTT on 10/15/2022 in #help

Are pointers supported in Fast API return types?

If no, how do I return pointers?

55 replies

DDeno

•Created by NeTT on 10/13/2022 in #help

ML with FFI

Suppose you wish to do some machine learning stuff with Deno, would it be optimal to use FFI with C over Rust?

14 replies