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PostgreSQL - EXPLAIN cheatsheet

  • -> Marks the start of info on a "plan node"
  • Work from the leaves to the root to understand what happened first
(cost=0.00..5.04 rows=101 width=0)
  • (cost=
// add the followings in the vscode settings.json
// Credit: James King
"explorer.fileNesting.patterns":{
"*.ts": "${capture}.test.ts",
"*.go": "${capture}_test.go",
"*.js": "${capture}.js.map, ${capture}.min.js, ${capture}.d.ts, ${capture}.test.js",
"*.jsx": "${capture}.test.jsx",
"*.tsx": "${capture}.test.tsx",
"tsconfig.json": "tsconfig.*.json",
Alias Command
gaa git add --all
gcmsg git commit -m
ggp git push origin $(current_branch)
gcm git checkout $(git_main_branch)
grhh git reset --hard
gcb git checkout -b
gsta git stash push
gstd git stash drop
@SamsadSajid
SamsadSajid / clean_code.md
Created May 9, 2022 10:41 — forked from wojteklu/clean_code.md
Summary of 'Clean code' by Robert C. Martin

Code is clean if it can be understood easily – by everyone on the team. Clean code can be read and enhanced by a developer other than its original author. With understandability comes readability, changeability, extensibility and maintainability.


General rules

  1. Follow standard conventions.
  2. Keep it simple stupid. Simpler is always better. Reduce complexity as much as possible.
  3. Boy scout rule. Leave the campground cleaner than you found it.
  4. Always find root cause. Always look for the root cause of a problem.

Design rules

@SamsadSajid
SamsadSajid / scalaTut.scala
Last active April 15, 2022 23:58
Scala tut
// filtering alphanumeric with isLetterOrDigit
// convert a char to lower with toLower
val string: String = "A man, a plan, a canal: Panama"
string.toCharArray.filter(_.isLetterOrDigit).map(_.toLower)
// convert a string to lower case
string.toLowerCase()
// ========================================================================= //
// partial function demo with chaining //