Recent questions tagged data

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data binding - bound and unbound controls in ms access

What is the difference between bound and unbound controls in MS Access? How do they differ? And when on an MS Access ... a form is bound or not? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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data binding - MVVM radiobuttons

Someone please help. I have an interesting issue. I am trying to implement an MVVM app and I want to bind ... of the work-arounds listed below. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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data structures - C++ STL map: is access time O(1)?

Is key look up on std::map O(1)? I thought it was until I thought about it more. It is based on ... on string key, std::unordered_map perhaps? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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data structures - Are Fibonacci heaps or Brodal queues used in practice anywhere?

Are Fibonacci heaps used in practice anywhere? I've looked around on SO and found answers to related questions ... examples of binomial heaps. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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data warehouse - Redshift Performance of Flat Tables Vs Dimension and Facts

I am trying to create dimensional model on a flat OLTP tables (not in 3NF). There are people who are ... flat tables directly in the reports. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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515 views

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data structures - What technique should be used to prune 2d collision checks?

From the outset, collision detection feels like it is an O(n^2) problem. You have a bunch of objects ... knowledge about what might work best? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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data structures - Is there an easy way to make a min heap in C++?

I'm very new to C++, and I was wondering if there was a way to make a min heap in C++ from the standard library. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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624 views

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data visualization - creating tree diagram for showing case count using R

I need to create a "tree diagram"-like graph to present the number of cases for different scenarios, like ... the numbers. Any suggestions? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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data binding - WPF ListBox that lays out its items horizontally

I'm trying to write a WPF application for displaying images from a selection. I want to display all of the ... simply by the user clicking it. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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data driven tests - Possible to pass parameters to TestNG DataProvider?

We would like to run some of our tests each against a set of data values, verifying that the same conditions ... assertTrue(isOdd(num)); } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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525 views

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data structures - Calculate the Hilbert value of a point for use in a Hilbert R-Tree?

I have an application where a Hilbert R-Tree (wikipedia) (citeseer) would seem to be an appropriate data ... to go about calculating this? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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601 views

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data structures - Reading COBOL datastructures from Java

Is there a way to read COBOL data in a Java program? More concretely I'm confronted with the following case: ... problem of reading COBOL data? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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757 views

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data binding - WPF Bind to itself

I've got a WPF Window, and somewhere there is a ListView where I bind a List<string> to. Now somewhere in my ... is a shortcut for the former). See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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645 views

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data mining - Choosing eps and minpts for DBSCAN (R)?

I've been searching for an answer for this question for quite a while, so I'm hoping someone can help me. I'm ... can't post an image just yet. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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575 views

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data structures - Java collections maintaining insertion order

Why do some collection data structures not maintain the order of insertion? What is the special thing achieved ... 't maintain the order? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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618 views

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data structures - Difference between a LinkedList and a Binary Search Tree

What are the main differences between a Linked List and a BinarySearchTree? Is BST just a way of maintaining a ... this in a simple manner. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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636 views

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data modeling - What is an "order line"?

I listen a number of podcasts. Often I hear the expression "Order line" in the context of database or ... represent in a canonical example? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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data binding - Android : Difference between DataBinding and ViewBinding

We are using DataBinding since Jetpack release. Android documentation indicates that ViewBinding was added in Android ... these two concepts? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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875 views

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data structures - What is the difference between a KD-tree and a R-tree?

I looked at the definition of KD-tree and R-tree. It seems to me that they are almost the same. What's the ... a KD-tree and an R-tree? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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475 views

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data structures - Array-Based vs List-Based Stacks and Queues

I'm trying to compare the growth rates (both run-time and space) for stack and queue operations when implemented ... for both stacks and queues. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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685 views

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data structures - When to use Preorder, Postorder, and Inorder Binary Search Tree Traversal strategies

I realized recently that while having used BST's plenty in my life, I've never even contemplated using anything ... more sense than in-order? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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477 views

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data structures - Algorithm to find top 10 search terms

I'm currently preparing for an interview, and it reminded me of a question I was once asked in a previous ... a sliding window. Any ideas? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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510 views

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data visualization - How to combine different barplot in R?

I am a new R user. I have a difficult time figuring out how to combine different barplot into one graph. ... that they have different names. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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500 views

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data modeling - Aggregation in Cassandra across partitions

I have a Data model like below, CREATE TABLE appstat.nodedata ( nodeip text, timestamp timestamp, flashmode ... appreciable. Thanks, Harry See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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508 views

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data structures - Can we create variable length arrays in c++

I am trying to create this simple program which displays the data of the array back to the user again.. I want ... https://www.codechef.com/ide See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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728 views

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data binding - Bind to animated property (WPF)

Does anybody knows, if there is a way to use a property that is animated as source for a binding? As far ... to trigger the binding. tia Martin See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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662 views

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data binding - Custom UI5 control does not update bound value

How can I pass OData value to property of a custom UI5 control? I tried this but it's not working. If I try passing ... ); }); UI5 version: 1.92 See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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data structures - "overflow while adding drop-check rules" while implementing a fingertree

I'm trying to define a finger tree structure and implement its basic operations as an exercise in Rust. I've come up ... How do I make it work? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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