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sql - How to find all connected subgraphs of an undirected graph

I need some help for a problem that i am struggling to solve. Example table: ID |Identifier1 | Identifier2 -------- ... be in the same group with group ID = 1. Question&Answers:os...

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

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Pipe character in Python

I see a "pipe" character (|) used in a function call: res = c1.create(go, come, swim, "", startTime, endTime, ... bx) What is the meaning of the pipe in ax|bx? Question&Answers:os...

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

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Remove spaces from a string in C

What is the easiest and most efficient way to remove spaces from a string in C? Question&Answers:os...

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

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php - Allowed memory size of X bytes exhausted

Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 13965430 bytes) PHPInfo shows ... worker of mine added without my knowledge. Question&Answers:os...

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

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c# - How to convert string to double with proper cultureinfo

I have two nvarchar fields in a database to store the DataType and DefaultValue, and I have a DataType Double and ... I get this working for all the browsers? Question&Answers:os...

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

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How to get rid of double backslash in python windows file path string?

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

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How to do a true Java ping from Windows?

I have a device on a network that I am attempting to ping through my Java program. Through my windows command ... better way to emulate a ping in Java? Thanks Question&Answers:os...

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

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java - How to set request encoding in Tomcat?

I have a problem in my Java webapp. Here is the code in index.jsp: <%@page contentType="text/html" pageEncoding=" ... Tomcat 6 and 7, and on Windows and Ubuntu. Question&Answers:os...

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

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c++ - SIMD prefix sum on Intel cpu

I need to implement a prefix sum algorithm and would need it to be as fast as possible. Ex: [3, 1, 7, 0, 4, 1, 6, 3] should ... [i - 1]) : w[(i - 1) >> 1]; } Question&Answers:os...

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

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What's the best way to return a random line in a text file using C?

What's the best way to return a random line in a text file using C? It has to use the standard I/O library (<stdio ... run. (It's the DS, so no multi-tasking.) Question&Answers:os...

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

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c# - File I/O with streams - best memory buffer size

I am writing a small I/O library to assist with a larger (hobby) project. A part of this ... case" tradeoff between perceived responsiveness vs. performance)? Question&Answers:os...

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

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android - Upgraded to SDK 2.3 - now no emulators have connectivity

I've upgraded from 2.2 to 2.3. I originally thought that I had just a problem with ... .openConnection(DefaultClientConnectionOperator.java:136) 12-07 12:11:41...

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

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ajax - What is the correct way to deal with JSF 2.0 exceptions for AJAXified components?

I have set up web.xml so that anything that's java.lang.Throwable (i.e. any uncaught exceptions or errors) ... an exception that the error page can be shown? Question&Answers:os...

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

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Escaping Closures in Swift

I'm new to Swift and I was reading the manual when I came across escaping closures. I didn't get the ... what escaping closures are in Swift in simple terms. Question&Answers:os...

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

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jQuery .on does not work but .live does

Since the live() method is deprecated as of version 1.7, I started going through my source and converting all of ... longer works. So what am I missing here? Question&Answers:os...

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

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xcode - IBOutlet is nil, but it is connected in storyboard, Swift

Using Swift 1.1 and Xcode 6.2. I have a UIStoryboard containing a singular, custom ... var arrivingLeavingSwitch: UISegmentedControl! Thank you. Question&Answers:os...

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

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r - rbind multiple data sets

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

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java - How to force browser to download file?

Everything works fine, but only if file is small, about 1MB, when I tried it with bigger files, like 20MB my browser ... in.close(); bin.close(); din.close(); Question&Answers:os...

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

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ios - What is the difference between ObservedObject and StateObject in SwiftUI

If I have an ObservableObject in SwiftUI I can refer to it as an @ObservedObject: class ViewModel: ... or they are two completely different things? Question&Answers:os...

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

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scala - How do I detect if a Spark DataFrame has a column

When I create a DataFrame from a JSON file in Spark SQL, how can I tell if a given column exists before calling ... .columns res17: Array[String] = Array(b, c) Question&Answers:os...

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

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Strip Byte Order Mark from string in C#

I've read similar posts on this and they don't answer my question. In C#, I have a string that I'm obtaining ... to strip a BOM from a string? Thank you! Question&Answers:os...

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

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Git repository in a Git repository

I have a Git repository including a Git repository. repo1/ .git/ files repo2/ .git/ files files Is it possible to work with this architecture? Question&Answers:os...

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

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iphone - Calculate new coordinate x meters and y degree away from one coordinate

I must be missing somthing out in the docs, I thought this should be easy... If I have one ... :(int)meters translateDegrees:(double)degrees; Thanks! Question&Answers:os...

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

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913 views

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media player - Android MediaPlayer Stop and Play

I'm creating Android application contains 2 buttons, on click on each button play a mp3 file. The problem is ... not check each button and player every time. Question&Answers:os...

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

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json - Flatten aggregated key/value pairs from a JSONB field?

I am working in Postgres 9.4 with the following table: Column │ Type │ Modifiers ... .171576079922216 ... Is this possible? Question&Answers:os...

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

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533 views

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gcc - Preprocessor output

How do I view the output produced by the C pre-processor, prior to its conversion into an object file? I want to see what the MACRO definitions do to my code. Question&Answers:os...

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

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c++ - C++11 - static_assert within constexpr function?

How would one properly do a static_assert within a constexpr function? For example: constexpr int do_something(int x) { ... 7 does not let me compile this code. Question&Answers:os...

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

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302 views

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How to call parameterized method from JSP using JSTL/EL

How to call a Java method with arguments which is defined in Java class, from JSP using JSTL/EL. The method is returning arrays. Any return value can be used. Question&Answers:os...

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

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