zoozle 0.1.9

Some I/O macros like C++ cin/cout.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137

fn _swap_func<T>(first:&mut T,second:&mut T)
   where T:Clone
{
   let temp=first.clone();
   *first=second.clone();
   *second=temp;
}

 pub fn read_string()->Option<String>{
    let mut buff=String::new();
    match std::io::stdin().read_line(&mut buff){
        Ok(_)=>{
            Some(buff)
        },
        Err(_)=>{
            None
        },
    }
 }
 
 pub fn read_into<T>() -> Option<T>
   where T:std::str::FromStr
{
   let mut s = String::new();
   std::io::stdin().read_line(&mut s).ok();
   s.trim().parse().ok()
}

pub fn safe_scan<T>(default:T) -> T
   where T:std::str::FromStr
{
   let mut buff = String::new();
   std::io::stdin().read_line(&mut buff).ok();
   buff.trim().parse().unwrap_or(default)
}

#[allow(unused_macros)]
#[macro_export]

///Print macro like C++ cout.
/// # Examples
/// let x=6;
/// echo!(x,"is my favorite number.")
macro_rules! echo {
   ($($e:ident),*) => {
       $(
           (print!("{}", $e));
       )*
       print!("\n");
   };
  
   ($($e:expr),*) => {
       $(
           (print!("{}", $e));
       )*
       print!("\n");
   };      
}

#[allow(unused_macros)]
///Scan macro like C++ cin.
/// Ignores whitespace.
/// # Examples
/// let x:i32;
/// let y=String::new();
/// scan!(x,y);
/// # Panics
/// If failed to translate into desired type,
/// this macro calls panic!() macro.
#[macro_export]
macro_rules! scan {
   ($($e:expr),*) => {
       $(
           ($e=zoozle::io::read_into().unwrap());
       )*
   };
   ($($e:ident),*) => {
    $(
        ($e=zoozle::io::read_into().unwrap());
    )*
};     
}

#[allow(unused_macros)]
#[macro_export]
///Scan macro like C++ cin.
/// Divided by whitespace.
/// # Examples
/// let x:i32;
/// let y=String::new();
/// space_scan!(x,y);   /// foo bar
/// # Panics
/// If failed to translate into desired type,
/// this macro calls panic!() macro.
macro_rules!  space_scan {
   ($($e:expr),*) => {
       let mut temp=String::new();
       std::io::stdin().read_line(&mut temp);
       let tempvec:Vec<&str>=temp.split_whitespace().collect();
       let mut count=0;
       $(
           $e=tempvec[count].parse().unwrap();
           count+=1;
       )*
   };
}

///Scan macro like C++ cin.
/// Ignores whitespace.
/// Never call panic!().
/// If failed to translate into desired type,
/// the default value will be assigned.
/// # Examples
/// let x:i32; 
/// x=safe_scan!(9999);
#[allow(unused_macros)]
#[macro_export]
macro_rules!  safe_scan {
    /*($e:expr) => {
        zoozle::io::safe_scan($e)
    };*/
      
    ($e:ident) => {
        zoozle::io::safe_scan($e)
    }  
 }

#[allow(unused_macros)]
#[macro_export]
///Simple swap macro.
///You don't need &mut before variable.
macro_rules!  swap {
    ($e:ident,$m:ident) => {
        zoozle::io::_swap_func(&mut $e,&mut $m);
    }  
}