laalaguer

Sometimes database is too large for Mac's internal disk. Moving data directory to an external HDD disk is required, and here is how.

Environment

• Mac Mini 2025 (M4 chip) + HDD external drive formatted with APFS (defaut: case insensitive).
• MySQL version v8.0.42.
• Data ~200GB.

Failed Attempts

laalaguer

''' Python script to find the earliest block that an account has code.

    python3 find.py [node_url] [address]

'''
import sys
from typing import Union
from thor_requests.connect import Connect

laalaguer

from math import sqrt


class Uniswap:
    def __init__(self, xs):
        self.xs = xs
        self.lastK = sqrt(xs[0] * xs[1])

    def swap(self, i, dx):
        d = self.xs[0] * self.xs[1]

laalaguer

# Speed up.
cache = {}

def f(n):
    # Speed up.
    if cache.get(n) != None:
        return cache[n]

    if n == 1:
        print('n==1, directly return 1')

laalaguer

# No speed up.
def f(n):
    if n == 1:
        print('n==1, directly return 1')
        return 1

    p = [] # Storage for temp results.
    for i in range(1, n): # i in [1, n)
        temp = 1 + max(i-1, f(n-i))
        p.append(temp)

laalaguer

class PathFinder {
    constructor(pairs) {
        this.graph = new Map()
        pairs.forEach((item) => {
            if (!this.graph.has(item[0])) {
                this.graph.set(item[0], new Array())
            }
            if (!this.graph.has(item[1])) {
                this.graph.set(item[1], new Array())
            }

laalaguer

class DotPath {
  constructor(a, b) {
    this.storage = [a, b] 
  }

  hasDot(dot) {
    switch (dot) {
      case this.storage[0]:
        return true
      case this.storage[1]:

laalaguer

import abc

class A(abc.ABC):
  @abc.abstractmethod
  def foo(self):
    print("abstract foo()")

class B(A):
  def foo(self, who:str): # Note: function signature is different
    print("hello", who)

laalaguer

import abc


class MyInterface(abc.ABC):  # Same as class MyInterface(metaclass=abc.ABCMeta)
    def __init__(self, age: int):
        print('MyInterface: init')
        self.age = age

    @abc.abstractmethod
    def load_data(self, name: str):

laalaguer

# CPU temperature
read temperature < /sys/class/thermal/thermal_zone0/temp
printf "CPU:\t%s °C\n" $(($temperature/1000))

# Memory pressure
memtotal=0
memfree=0
while read -r name value unit; do
        if [ "${name}" == "MemTotal:" ]; then
                memtotal=${value}