Vladislav Gapurov gapurov

What gets logged?

const array = new Array(3).fill([])
array[0].push("bytes")
console.log(array) // [ ["bytes"], ["bytes"], ["bytes"] ]

The key to understanding this one is in knowing that arrays in JavaScript are reference values. When you call .fill([]), what you’re really doing is “filling up” the array with three references to the same array. You can kind of think of it like this.

	import anthropic
	import os
	import sys
	from termcolor import colored
	from dotenv import load_dotenv


	class ClaudeAgent:
	def __init__(self, api_key=None, model="claude-3-7-sonnet-20250219", max_tokens=4000):
	"""Initialize the Claude agent with API key and model."""