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algorithm - Find the 2nd largest element in an array with minimum number of comparisons

For an array of size N, what is the number of comparisons required? See Question&Answers more detail:os...

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php - No Application Encryption Key Has Been Specified

I'm new to Laravel and I'm trying to use the Artisan command... php artisan serve It displays... Laravel ... using Laravel framework 5.5-dev. See Question&Answers more detail:os...

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excel - Convert xlsx to csv in Linux with command line

I'm looking for a way to convert xlsx files to csv files on Linux. I do not want to use PHP/Perl or ... for the newer Excel files. Any ideas? See Question&Answers more detail:os...

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visual studio 2013 - How to hide reference counts in VS2013?

Visual Studio 2013 introduced a new feature where it shows you how many times each of your methods are used. I ... t seem to find the option. See Question&Answers more detail:os...

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

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Any reason why scala does not explicitly support dependent types?

There are path dependent types and I think it is possible to express almost all the features of such languages as ... "it is not necessary" ? See Question&Answers more detail:os...

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Android phone orientation overview including compass

I've been trying to get my head around the Android orientation sensors for a while. I thought I understood ... confused people even further!) See Question&Answers more detail:os...

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reactjs - What's the right way to pass form element state to sibling/parent elements?

Suppose I have a React class P, which renders two child classes, C1 and C2. C1 contains an input field. I'll ... element. How should I do it? See Question&Answers more detail:os...

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jsp - Differences between cookies and sessions?

I am training in web developement and am learning about JSP & Servlets. I have some knowledge of HttpSession ... the differences between them? See Question&Answers more detail:os...

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java - Impossible to make a cached thread pool with a size limit?

It seems to be impossible to make a cached thread pool with a limit to the number of threads that it can ... execute() is a complete hack. See Question&Answers more detail:os...

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javascript - How to get highcharts dates in the x axis?

Is there a standard way to get dates on the x-axis for Highcharts? Can't find it in their documentation: https: ... d be great. Anyone know how? See Question&Answers more detail:os...

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c# - How to store/retrieve RSA public/private key

I want to use RSA public key encryption. What is the best way to store or retrieve private and public keys? Is XML ... , Q Which one is the key? See Question&Answers more detail:os...

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Hosting Git Repository in Windows

Is there currently a way to host a shared Git repository in Windows? I understand that you can configure the ... can provide access to others. See Question&Answers more detail:os...

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mp3 - Streaming Audio from A URL in Android using MediaPlayer?

I've been trying to stream mp3's over http using Android's built in MediaPlayer class. The documentation ... help much appreciated, thanks S See Question&Answers more detail:os...

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android - Cannot inline bytecode built with JVM target 1.8 into bytecode that is being built with JVM target 1.6

When trying to run the Example CorDapp (GitHub CorDapp) via IntelliJ, I receive the following error: Cannot inline ... with the same JVM target? See Question&Answers more detail:os...

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macos - How do I create a Bash alias?

I'm on OSX and I need to put something like this, alias blah="/usr/bin/blah" in a config file but I don't know where the config file is. See Question&Answers more detail:os...

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

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java - Difference between Iterator and Listiterator?

Iterator ite = Set.iterator(); Iterator ite = List.iterator(); ListIterator listite = List.listIterator(); ... of ListIterator over Iterator? See Question&Answers more detail:os...

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Comparison of DES, Triple DES, AES, blowfish encryption for data

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macos - Emacs on Mac OS X Leopard key bindings

I'm a Mac user and I've decided to learn Emacs. I've read that to reduce hand strain and improve ... have a better/more standard solution? See Question&Answers more detail:os...

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git tag - How do I edit an existing tag message in Git?

We have several annotated tags in our Git repository. The older tags have bogus messages that we would like to update ... How would we do this? See Question&Answers more detail:os...

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c++ - What exactly does stringstream do?

I am trying to learn C++ since yesterday and I am using this document:http://www.cplusplus.com/files/tutorial ... new to programming) Thank you. See Question&Answers more detail:os...

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Is it possible to use a div as content for Twitter's Popover

I am using twitter's bootstrap's popover here. Right now, when i scroll over the popover text a popover appears with ... ' href='#'>Click</a> See Question&Answers more detail:os...

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Need to list all triggers in SQL Server database with table name and table's schema

I need to list all triggers in SQL Server database with table name and table's schema. I'm almost there with ... get the table's schema also. See Question&Answers more detail:os...

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5 years later, is there something better than the "Fastest Possible C++ Delegates"?

I know that the topic of "C++ delegates" has been done to death, and both http://www.codeproject.com ... feedback from users, including on SO. See Question&Answers more detail:os...

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Do HTML WebSockets maintain an open connection for each client? Does this scale?

I am curious if anyone has any information about the scalability of HTML WebSockets. For everything I've read it ... it feels like it is. See Question&Answers more detail:os...

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How can I use PowerShell with the Visual Studio Command Prompt?

I've been using Beta 2 for a while now and it's been driving me nuts that I have to punt to cmd ... vsvars2010.ps1 script or something similar? See Question&Answers more detail:os...

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mysql - Is there any reason to worry about the column order in a table?

I know you can ALTER the column order in MySQL with FIRST and AFTER, but why would you want to bother? Since ... columns are in in the table? See Question&Answers more detail:os...

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c# - What is a callback?

What's a callback and how is it implemented in C#? See Question&Answers more detail:os...

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How to tell if a file is git tracked (by shell exit code)?

Is there a way to tell if a file is being tracked by running some git command and checking its exit code? In ... words: is git tracking a file? See Question&Answers more detail:os...

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

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