How to avoid repetitive long generic constraints in RustIs it possible to automatically implement a trait for any tuple that is made up of types that all implement the trait?Is there a constraint that restricts my generic method to numeric types?How can foreign key constraints be temporarily disabled using T-SQL?How do I use reflection to call a generic method?How to create a generic array in Java?How to get a class instance of generics type THow is `last` allowed to be called for an Args value?How to implement a trait for a parameterized traitAvoiding PhantomData in a struct to enforce type constraintsIs it possible to return part of a struct by reference?Associated References types as Value Types
Is there a way to make member function NOT callable from constructor?
Is domain driven design an anti-SQL pattern?
What is the command to reset a PC without deleting any files
Does a dangling wire really electrocute me if I'm standing in water?
Finding files for which a command fails
How could a lack of term limits lead to a "dictatorship?"
Denied boarding due to overcrowding, Sparpreis ticket. What are my rights?
How is it possible for user's password to be changed after storage was encrypted? (on OS X, Android)
How can I fix this gap between bookcases I made?
Is ipsum/ipsa/ipse a third person pronoun, or can it serve other functions?
When blogging recipes, how can I support both readers who want the narrative/journey and ones who want the printer-friendly recipe?
Check if two datetimes are between two others
Symmetry in quantum mechanics
Could Giant Ground Sloths have been a good pack animal for the ancient Mayans?
Are objects structures and/or vice versa?
What to wear for invited talk in Canada
Why did the Germans forbid the possession of pet pigeons in Rostov-on-Don in 1941?
Can a planet have a different gravitational pull depending on its location in orbit around its sun?
If a centaur druid Wild Shapes into a Giant Elk, do their Charge features stack?
Manga about a female worker who got dragged into another world together with this high school girl and she was just told she's not needed anymore
Landlord wants to switch my lease to a "Land contract" to "get back at the city"
Why doesn't a const reference extend the life of a temporary object passed via a function?
What causes the sudden spool-up sound from an F-16 when enabling afterburner?
Is it wise to focus on putting odd beats on left when playing double bass drums?
How to avoid repetitive long generic constraints in Rust
Is it possible to automatically implement a trait for any tuple that is made up of types that all implement the trait?Is there a constraint that restricts my generic method to numeric types?How can foreign key constraints be temporarily disabled using T-SQL?How do I use reflection to call a generic method?How to create a generic array in Java?How to get a class instance of generics type THow is `last` allowed to be called for an Args value?How to implement a trait for a parameterized traitAvoiding PhantomData in a struct to enforce type constraintsIs it possible to return part of a struct by reference?Associated References types as Value Types
.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty height:90px;width:728px;box-sizing:border-box;
I'm trying to make my own implementation of big integers (just for education). The implementation is generic by data type:
struct LongNum<T>
where T: Integer + MulAssign + CheckedMul + CheckedAdd + Copy + From<u8>
values: Vec<T>,
powers: Vec<u8>,
radix: u8,
The problem is that I need to repeat this verbose constraint for T in all impls. It's too cumbersome.
I can make my own trait combining these constraints, like this:
trait LongNumValue: Integer + MulAssign + CheckedMul + CheckedAdd + Copy + From<u8>
struct LongNum<T: LongNumValue>
values: Vec<T>,
powers: Vec<u8>,
radix: u8,
But in this case I have to add impls for this LongNumValue trait to all types which can be used in LongNum:
impl LongNumValue for u8
impl LongNumValue for u16
impl LongNumValue for u32
...
This means that if I don't add some type to this list of impls, the user of my crate will be unable to use this type for LongNum, even if this type is passes all constraints.
Is there any way to avoid writing long repetitive costraints without adding unnecessary restrictions to user?
generics rust constraints traits
asked 18 hours ago
Michael IlyinMichael Ilyin
12426
add a comment |
I'm trying to make my own implementation of big integers (just for education). The implementation is generic by data type:
struct LongNum<T>
where T: Integer + MulAssign + CheckedMul + CheckedAdd + Copy + From<u8>
values: Vec<T>,
powers: Vec<u8>,
radix: u8,
The problem is that I need to repeat this verbose constraint for T in all impls. It's too cumbersome.
I can make my own trait combining these constraints, like this:
trait LongNumValue: Integer + MulAssign + CheckedMul + CheckedAdd + Copy + From<u8>
struct LongNum<T: LongNumValue>
values: Vec<T>,
powers: Vec<u8>,
radix: u8,
But in this case I have to add impls for this LongNumValue trait to all types which can be used in LongNum:
impl LongNumValue for u8
impl LongNumValue for u16
impl LongNumValue for u32
...
This means that if I don't add some type to this list of impls, the user of my crate will be unable to use this type for LongNum, even if this type is passes all constraints.
Is there any way to avoid writing long repetitive costraints without adding unnecessary restrictions to user?
generics rust constraints traits
asked 18 hours ago
Michael IlyinMichael Ilyin
12426
1
You mean something similar to this? stackoverflow.com/questions/55553281/…
– hellow
18 hours ago
add a comment |
I'm trying to make my own implementation of big integers (just for education). The implementation is generic by data type:
struct LongNum<T>
where T: Integer + MulAssign + CheckedMul + CheckedAdd + Copy + From<u8>
values: Vec<T>,
powers: Vec<u8>,
radix: u8,
The problem is that I need to repeat this verbose constraint for T in all impls. It's too cumbersome.
I can make my own trait combining these constraints, like this:
trait LongNumValue: Integer + MulAssign + CheckedMul + CheckedAdd + Copy + From<u8>
struct LongNum<T: LongNumValue>
values: Vec<T>,
powers: Vec<u8>,
radix: u8,
But in this case I have to add impls for this LongNumValue trait to all types which can be used in LongNum:
impl LongNumValue for u8
impl LongNumValue for u16
impl LongNumValue for u32
...
This means that if I don't add some type to this list of impls, the user of my crate will be unable to use this type for LongNum, even if this type is passes all constraints.
Is there any way to avoid writing long repetitive costraints without adding unnecessary restrictions to user?
generics rust constraints traits
asked 18 hours ago
Michael IlyinMichael Ilyin
12426
I'm trying to make my own implementation of big integers (just for education). The implementation is generic by data type:
struct LongNum<T>
where T: Integer + MulAssign + CheckedMul + CheckedAdd + Copy + From<u8>
values: Vec<T>,
powers: Vec<u8>,
radix: u8,
The problem is that I need to repeat this verbose constraint for T in all impls. It's too cumbersome.
I can make my own trait combining these constraints, like this:
trait LongNumValue: Integer + MulAssign + CheckedMul + CheckedAdd + Copy + From<u8>
struct LongNum<T: LongNumValue>
values: Vec<T>,
powers: Vec<u8>,
radix: u8,
But in this case I have to add impls for this LongNumValue trait to all types which can be used in LongNum:
impl LongNumValue for u8
impl LongNumValue for u16
impl LongNumValue for u32
...
This means that if I don't add some type to this list of impls, the user of my crate will be unable to use this type for LongNum, even if this type is passes all constraints.
Is there any way to avoid writing long repetitive costraints without adding unnecessary restrictions to user?
generics rust constraints traits
generics rust constraints traits
asked 18 hours ago
Michael IlyinMichael Ilyin
12426
asked 18 hours ago
Michael IlyinMichael Ilyin
12426
asked 18 hours ago
Michael IlyinMichael Ilyin
12426
asked 18 hours ago
Michael IlyinMichael Ilyin
12426
asked 18 hours ago
Michael IlyinMichael Ilyin
12426
12426
1
You mean something similar to this? stackoverflow.com/questions/55553281/…
– hellow
18 hours ago
add a comment |
1
You mean something similar to this? stackoverflow.com/questions/55553281/…
– hellow
18 hours ago
1
1
You mean something similar to this? stackoverflow.com/questions/55553281/…
– hellow
18 hours ago
You mean something similar to this? stackoverflow.com/questions/55553281/…
– hellow
18 hours ago
add a comment |
1 Answer
1
active
oldest
votes
You can add a blanket implementation:
impl<T> LongNumValue for T
where
T: Integer + MulAssign + CheckedMul + CheckedAdd + Copy + From<u8>
answered 18 hours ago
starbluestarblue
45.6k1177138
add a comment |
Your Answer
StackExchange.ifUsing("editor", function ()
StackExchange.using("externalEditor", function ()
StackExchange.using("snippets", function ()
StackExchange.snippets.init();
);
);
, "code-snippets");
StackExchange.ready(function()
var channelOptions =
tags: "".split(" "),
id: "1"
;
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function()
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled)
StackExchange.using("snippets", function()
createEditor();
);
else
createEditor();
);
function createEditor()
StackExchange.prepareEditor(
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader:
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
,
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
);
);
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f55568655%2fhow-to-avoid-repetitive-long-generic-constraints-in-rust%23new-answer', 'question_page');
);
Post as a guest
Required, but never shown
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
You can add a blanket implementation:
impl<T> LongNumValue for T
where
T: Integer + MulAssign + CheckedMul + CheckedAdd + Copy + From<u8>
answered 18 hours ago
starbluestarblue
45.6k1177138
add a comment |
You can add a blanket implementation:
impl<T> LongNumValue for T
where
T: Integer + MulAssign + CheckedMul + CheckedAdd + Copy + From<u8>
answered 18 hours ago
starbluestarblue
45.6k1177138
add a comment |
You can add a blanket implementation:
impl<T> LongNumValue for T
where
T: Integer + MulAssign + CheckedMul + CheckedAdd + Copy + From<u8>
answered 18 hours ago
starbluestarblue
45.6k1177138
You can add a blanket implementation:
impl<T> LongNumValue for T
where
T: Integer + MulAssign + CheckedMul + CheckedAdd + Copy + From<u8>
answered 18 hours ago
starbluestarblue
45.6k1177138
answered 18 hours ago
starbluestarblue
45.6k1177138
answered 18 hours ago
starbluestarblue
45.6k1177138
answered 18 hours ago
starbluestarblue
45.6k1177138
45.6k1177138
add a comment |
add a comment |
Thanks for contributing an answer to Stack Overflow!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f55568655%2fhow-to-avoid-repetitive-long-generic-constraints-in-rust%23new-answer', 'question_page');
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
1
You mean something similar to this? stackoverflow.com/questions/55553281/…
– hellow
18 hours ago