ord

Implementing Ord for a type is awkward?

偶尔善良 提交于 2019-12-05 01:56:46
I have a newtype and I want to implement Ord : use std::cmp::{Ord, Ordering}; struct MyType(isize); impl Ord for MyType { fn cmp(&self, &other: Self) -> Ordering { let MyType(ref lhs) = *self; let MyType(ref rhs) = *other; lhs.cmp(rhs) } } When I try to compare two variables of my types, I get errors: error[E0277]: the trait bound `MyType: std::cmp::PartialOrd` is not satisfied --> src/main.rs:5:6 | 5 | impl Ord for MyType { | ^^^ can't compare `MyType` with `MyType` | = help: the trait `std::cmp::PartialOrd` is not implemented for `MyType` error[E0277]: the trait bound `MyType: std::cmp::Eq`

The right way to check of a string has hebrew chars

谁都会走 提交于 2019-12-04 19:52:44
The Hebrew language has unicode representation between 1424 and 1514 (or hex 0590 to 05EA). I'm looking for the right, most efficient and most pythonic way to achieve this. First I came up with this: for c in s: if ord(c) >= 1424 and ord(c) <= 1514: return True return False Then I came with a more elegent implementation: return any(map(lambda c: (ord(c) >= 1424 and ord(c) <= 1514), s)) And maybe: return any([(ord(c) >= 1424 and ord(c) <= 1514) for c in s]) Which of these are the best? Or i should do it differently? You could do: # Python 3. return any("\u0590" <= c <= "\u05EA" for c in s) #

How do I implement Ord for a struct?

限于喜欢 提交于 2019-12-04 10:10:29
问题 I've seen a question similar to this one, but no one that tells me exactly how to implement Ord for a struct. For example, the following: struct SomeNum { name: String, value: u32, } impl Ord for SomeNum { fn cmp(&self, other:&Self) -> Ordering { let size1 = self.value; let size2 = other.value; if size1 > size2 { Ordering::Less } if size1 < size2 { Ordering::Greater } Ordering::Equal } } This gives me the error: error: the trait `core::cmp::Eq` is not implemented for the type `SomeNum` [E0277

shifting letters using ord and chr

↘锁芯ラ 提交于 2019-12-01 11:00:51
I am trying to do a function that shifts each letter in each word to the right by value and these words will be from a list that I will open it using "open"function I wrote the code, and I am facing some difficulties here here is my code def test(): value=eval(input("Value here!")) with open ("word-text.txt","r") as f: for ord in (f): print (ord) for chr in ord: print (chr) #nice=(chr[len(ord)+value]) ''.join([chr(ord(i)+2) for i in s]) print (i) this is the output I get Value here!2 apples a p p l e s Traceback (most recent call last): File "<pyshell#54>", line 1, in <module> test() File "

shifting letters using ord and chr

喜你入骨 提交于 2019-12-01 08:57:24
问题 I am trying to do a function that shifts each letter in each word to the right by value and these words will be from a list that I will open it using "open"function I wrote the code, and I am facing some difficulties here here is my code def test(): value=eval(input("Value here!")) with open ("word-text.txt","r") as f: for ord in (f): print (ord) for chr in ord: print (chr) #nice=(chr[len(ord)+value]) ''.join([chr(ord(i)+2) for i in s]) print (i) this is the output I get Value here!2 apples a