PiyushXCoder

use std::fmt::Debug;
use std::marker::PhantomData;
use std::ptr::NonNull;

#[derive(Debug)]
struct Node<T: Debug> {
    value: T,
    next: Option<NonNull<Node<T>>>,
    prev: Option<NonNull<Node<T>>>,
}

PiyushXCoder

//!
//! Type erasure is a fancy name for a very down-to-earth trick: you throw away
//! some type information at compile time, but still keep the values around at
//! runtime. The program still works, but the runtime no longer knows the specific
//! type; only the behavioral interface remains.
//!
//! It is like void pointer in rust
//!

use std::{marker::PhantomData, ptr::NonNull};

PiyushXCoder

Settings to change background colour have been removed from xfce4-notes plugin but you can still set it by running in terminal

xfconf-query -c xfce4-panel -p /plugins/notes/global/background-color -t string -s "#219466" --create

You can also let the default gtk theme to be used to be used for background color

xfconf-query -c xfce4-panel -p /plugins/notes/global/background-color -t string -s "" --create reboot after running it

PiyushXCoder

use std::fmt;
use std::error::Error;

use Khand::*;
use Opr::*;

#[derive(Debug)]
enum Khand {
    NUM(f64),
    OPR(Opr),

PiyushXCoder

use colored::*;

static LEKH: &str = r##"
    4               4               4               4
4   4           4   4           4   4           4   4
    |               |               |               |
/   =   \       /   =   \       /   =   \       /   =   \
|   |   |       |   |   |       |   |   |       |   |   |
=   =   =   =   =   =   =   =   =   =   =   =   =   =   =
|   #   #   #   #   #   #   #   #   #   #   #   #   #   |