Recent questions tagged Reference

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reference - What is the purpose of `&` before the loop variable?

What is the purpose of & in the code &i in list? If I remove the &, it produces an error in largest = ... expected type `i32` found type `&&i32` See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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701 views

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reference - Why is assignment to 'this' not allowed in java?

The error I get from the compiler is "The left hand side of an assignment must be a variable". My use ... to know the reason for the decision See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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766 views

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reference - Why are explicit lifetimes needed in Rust?

I was reading the lifetimes chapter of the Rust book, and I came across this example for a named/explicit lifetime ... after-free (or some other class?) errors? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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880 views

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reference - Cannot move out of borrowed content when trying to transfer ownership

I'm writing a linked list to wrap my head around Rust lifetimes, ownership and references. I have the following code ... to add to the end of the list. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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959 views

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reference - Cannot borrow as mutable because it is also borrowed as immutable

I am learning Rust and I don't quite get why this is not working. #[derive(Debug)] struct Node { value: String, } #[ ... D']); assert_eq!(younger, vec!['X']); } Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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917 views

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reference - What's the difference between SoftReference and WeakReference in Java?

What's the difference between java.lang.ref.WeakReference and java.lang.ref.SoftReference ? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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665 views

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reference - How to "return an object" in C++?

I know the title sounds familiar as there are many similar questions, but I'm asking for a different aspect of ... and why should I use the second solution? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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711 views

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reference - What are Rust's exact auto-dereferencing rules?

I'm learning/experimenting with Rust, and in all the elegance that I find in this language, there is one ... any formal rationale for such a design decision? Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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705 views

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reference s3 buckets in docker image

I am trying to test a local docker image using content from different s3 buckets and getting: docker: ... stackoverflow.com/questions/65835822/reference-s3-buckets-in-docker-image...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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753 views

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reference - value not updated when incrementing mutable ref

Below is an extract of code : (the problem is visible by testing only this extract) let cptIdCO = ref ... .com/questions/65870593/value-not-updated-when-incrementing-mutable-ref...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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735 views

1 answer

reference - How to improve prediction on a different dataset using a trained model?

I have two datasets. These datasets include chemical molecules and their solubility value (numeric values). Target ... -prediction-on-a-different-dataset-using-a-trained-model...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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696 views

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reference - Points rules for an online community

We have a very big directory based on community, members of which participate on forum and write reviews. ... .com/questions/65910648/points-rules-for-an-online-community...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.7k views

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reference - Git : fatal: Ambiguous object name: 'origin/release_2.6'

I am getting this error when trying to create a remote tracking branch git co -b release_2.6 origin/release_2. ... /3782893/git-fatal-ambiguous-object-name-origin-release-2-6...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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772 views

1 answer

reference - PHP: Self-referencing array

Is there a way of referencing an array key from within the array? This may make more sense in code ... from:https://stackoverflow.com/questions/10358261/php-self-referencing-array...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.7k views

1 answer

reference - PHP: Self-referencing array

Is there a way of referencing an array key from within the array? This may make more sense in code ... from:https://stackoverflow.com/questions/10358261/php-self-referencing-array...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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797 views

1 answer

reference - Sources on S4 objects, methods and programming in R

(Closed.) This question does not meet Stack Overflow guidelines. It is not currently accepting answers. question from ... 4143611/sources-on-s4-objects-methods-and-programming-in-r...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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689 views

1 answer

reference - Summary of Ruby on Rails fundamental concepts

Being new to Rails, I am having a difficult time finding a website or reference that gives a run down ... .com/questions/5205002/summary-of-ruby-on-rails-fundamental-concepts...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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645 views

1 answer

reference - Summary of Ruby on Rails fundamental concepts

Being new to Rails, I am having a difficult time finding a website or reference that gives a run down ... .com/questions/5205002/summary-of-ruby-on-rails-fundamental-concepts...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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907 views

1 answer

reference - Cannot set private variable through constructor php

I am trying to set private properties of Account class using _construct method. I tried using this-> keyword but ... errors. Any help regarding this problem will be appreciated....

asked Feb 5, 2021 in Technique[技术] by 深蓝 (71.8m points)

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960 views

1 answer

reference - Cannot set private variable through constructor php

I am trying to set private properties of Account class using _construct method. I tried using this-> keyword but ... errors. Any help regarding this problem will be appreciated....

asked Feb 5, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.1k views

1 answer

reference - SolidWorks VBA - Translating API Help into useable code

I'd like to do what feels like a fairly simple task, and I've found the specific API Help pages which should make it clear, ... - as I said, I'm fairly new to this coding thing......

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.6k views

1 answer

reference - SolidWorks VBA - Translating API Help into useable code

I'd like to do what feels like a fairly simple task, and I've found the specific API Help pages which should make it clear, ... - as I said, I'm fairly new to this coding thing......

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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