giuliano-macedo

JHS Reverse formula

More comprehensive reverse JHS formula for computing latitude,longitude given northing, easting of a projection.

reference: Geomatics guidance Note number 7 part 2 - 3.5.3.1

(EPSG Dataset coordinate operation method code 9807)

Constants

giuliano-macedo

from sqlalchemy.schema import DropTable
from sqlalchemy.ext.compiler import compiles
from sqlalchemy.dialects.postgresql.base import PGDDLCompiler
from typing import Any


@compiles(DropTable, "postgresql")
def _compile_drop_table(element: DropTable, compiler: PGDDLCompiler, **kwargs: Any) -> str:
    return compiler.visit_drop_table(element) + " CASCADE"

giuliano-macedo

Interesting python stuff i found messing around with it

1 hash function is random for non non-primitive objects, and it's seed is reset each time the interpreter is ran

Example: python -c "print(hash('hello world'))" generates random numbers, while python -c "print(hash(4.2))" always returns a constant value

2 list.extend method updates itself each time the iterator is called

This code will run forever ( and eat all your RAM ):

giuliano-macedo

T = TypeVar("T")
class MyProtocol(Protocol[T]):
    def my_method(self, first_param: int, args: T) -> int:
        ...
@dataclass
class Imp1Args:
    x: float
    y: float

class Imp1(MyProtocol[Imp1Args]):

giuliano-macedo

import 'package:collection/collection.dart';
import 'package:flutter/material.dart';

extension WidgetListSpacing on List<Widget> {
  List<Widget> withSizedBoxBetween({double? width, double? height}) {
    final box = SizedBox(width: width, height: height);
    return mapIndexed((index, widget) => index == 0 || index == length ? [widget] : [box, widget]).flattened.toList();
  }
}

giuliano-macedo

import 'package:flutter/material.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Clubbi code challenge',
      debugShowCheckedModeBanner: false,

giuliano-macedo

# put file in /etc/X11/xorg.conf.d/40-microsoft-mouse.conf
# use xinput list-props "Microsoft Microsoft® Classic IntelliMouse®" to get all options
# use xinput set-prop "Microsoft Microsoft® Classic IntelliMouse®" "OPTION" "OPTIONVALUE" to test an option

Section "InputClass"
  Identifier   "Microsoft Mouse"
  MatchProduct "Microsoft Microsoft® Classic IntelliMouse®"
  Driver       "libinput"
  Option       "TransformationMatrix" "2.4 0 0 0 2.4 0 0 0 1"
EndSection

giuliano-macedo

import 'package:flutter/material.dart';

class TabControllerWithOnChange extends TabController {
  TabControllerWithOnChange({
    int initialIndex = 0,
    required int length,
    required TickerProvider vsync,
    required void Function(int) onChange,
  }) : super(initialIndex: initialIndex, length: length, vsync: vsync) {
    addListener(() {

giuliano-macedo

import 'dart:io';

import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:qr_code_scanner/qr_code_scanner.dart';

class ScannerWidget extends StatefulWidget {
  final BarcodeFormat format;
  final void Function(String?) onScan;
  ScannerWidget({

giuliano-macedo

use std::fmt;

#[derive(Debug, Clone, Copy)]
struct Point {
    x: f64,
    y: f64,
}

impl fmt::Display for Point {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {