JoshCheek

require 'objspace'

def self.show_allocations(&block)
  _ = ObjectSpace.trace_object_allocations &block
  ObjectSpace
    .each_object
    .to_a
    .filter_map do |obj|
      file = ObjectSpace.allocation_sourcefile obj
      line = ObjectSpace.allocation_sourceline obj

JoshCheek

# followup for https://twitter.com/kirill_shevch/status/1577930057728856064
require 'objspace'
require 'json'
def some_code
  [ 10_000.times.map { "hi" },
    5_000.times.map { "there" },
    JSON.load('{ "omg": 123, "wtf": true, "bbq": 23.45 }'),
  ]
end

JoshCheek

require 'active_record'
ActiveRecord::Base.establish_connection adapter: 'sqlite3', database: ':memory:'

ActiveRecord::Schema.define do
  self.verbose = false
  create_table :posts do |t|
    t.string :title
    t.string :status
  end

kylechui

Adding dot-repeat to your Neovim plugin

In Neovim, the . character repeats "the most recent action"; however, this is not always respected by plugin actions. Here we will explore how to build dot-repeat support directly into your plugin, bypassing the requirement of dependencies like repeat.vim.

The Basics

When some buffer-modifying action is performed, Neovim implicitly remembers the operator (e.g. d), motion (e.g. iw), and some other miscellaneous information. When the dot-repeat command is called, Neovim repeats that operator-motion combination. For example, if we type ci"text<Esc>, then we replace the inner contents of some double quotes with text, i.e. "hello world" → "text". Dot-repeating from here will do the same, i.e. "more samples" → "text".

Using operatorfunc

lkhphuc

I like to have my neovim to bold the language keywords, italicize the comments, or both italicize and bold all the builtin functions, type or constants etc. And I want this to be consistent across colorschemes.

In vim/neovim, to update a highlight group it is as simple as highlight HighlightGroupToModified gui=bold,italic,underline. But this is problematic if the HighlightGroupToModified is defined as a link to other highlight group. For example highlight TSInclude might be linked to Include by your colorscheme, so executing hi TSInclude gui=bold will apply bold to TSInclude but wipe out any foreground and background color information that was originally defined by linking to Include highlight group.

Since every colorschemes can arbitrarily choose to define a highlight group explicitly or by linking, adding hi TSConstant gui=bold to your config are bound to break when you switch colorschemes. A manual approach is to recursively go down the linking chain defined by colorscheme, e.g TSConstant

codeinthehole

#!/usr/bin/env bash
# 
# Print the users who have access to a given 1Password item.
#
# Usage:
# 
#   1pw-item-users "$ITEM_NAME"
#
# Note, the `op` tool must be authenticated before this command is run.

kddnewton

require "json"

struct = { "a" => 1, "b" => 2, "c" => [1, 2, 3], "d" => [{ "e" => 3 }, nil, false, true, [], {}] }
source = JSON.dump(struct)

tokens = []
index = 0

until source.empty?
  tokens <<

davidatsurge

local ls = require("luasnip")
local fmt = require("luasnip.extras.fmt").fmt
local s = ls.snippet
local i = ls.insert_node
local f = ls.function_node
local d = ls.dynamic_node
local sn = ls.snippet_node
local rep = require("luasnip.extras").rep

-- Get a list of  the property names given an `interface_declaration`

JoelQ

class Dollar
  attr_reader :cents

  def initialize(cents:)
    @cents = cents
  end

  def hash
    [self.class, cents].hash
  end

joelonsql

🗺🐘 1000+ PostgreSQL EXTENSIONs

This is a list of URLs to PostgreSQL EXTENSION repos, listed in alphabetical order of parent repo, with active forks listed under each parent.

⭐️ >= 10 stars
⭐️⭐️ >= 100 stars
⭐️⭐️⭐️ >= 1000 stars
Numbers of stars might not be up-to-date.