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java - HashSet contains duplicate entries

A HashSet only stores values ones, when the equals method says that they're the same. Thats what I thought. But ... .. shouldn the size be 2? See Question&Answers more detail:os...

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

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How to read strings from a Scanner in a Java console application?

import java.util.Scanner; class MyClass { public static void main(String args[]) { Scanner scanner = new Scanner( ... What's the problem here? See Question&Answers more detail:os...

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

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443 views

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c# - Having a "+" in the class name?

Class name: MyAssembly.MyClass+MyOtherClass The problem is obviously the + as separator, instead of traditionnal ... others separators exist. See Question&Answers more detail:os...

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

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597 views

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windows - Setting JAVA_HOME at Android SDK

I have some conflicts with the JAVA_HOME configuration When I using the following code - System.out.println(System ... be resolved? Thanks, Eyal See Question&Answers more detail:os...

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

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r - Shifting a column down by one

Say I have a data.frame that looks like this df <- data.frame(AAA = rep(c(NA,sample(1:10, 1)),5 ... pattern might vary through the data.frame. See Question&Answers more detail:os...

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

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C++ "error: passing 'const std::map<int, std::basic_string<char> >' as 'this' argument of ..."

With the following code (excerpted for brevity): color.h: class color { public: color(); enum colorType { ... help. Any help is appreciated. See Question&Answers more detail:os...

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

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xslt - How to 'select' from XML with namespaces?

I have an XML document something like ::: <?xml version="1.0" encoding="utf-8"?> <?mso-application progid=" ... get the 'select' to match Row? See Question&Answers more detail:os...

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

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regex - Validate date format in php

I'm trying to validate date using PHP. I'd like following formats to be valid: d/m/yy d/m/yyyy dd/m/yy ... FALSE; } Thanks for all your answers See Question&Answers more detail:os...

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

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git - Why are Github project document page urls case sensitive? What are the negative effects?

I Just uploaded a sample index.html page for my github project repo gh-pages branch. However it seems the url used ... :-O) Thanks in advance. See Question&Answers more detail:os...

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

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css - Applying "page-break-before" to a table row (tr)

According to W3.org, the style page-break-after applies to block level elements (http://www.w3.org/TR/2004 ... that case, will be appreciated See Question&Answers more detail:os...

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

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653 views

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python - Format of datetime in pyplot axis

I am trying to plot some data against a list of datetime objects in the x axis with pyplot. However the dates ... kind of object? Thank you. See Question&Answers more detail:os...

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

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Get the query string on the called javascript file

Is it possible to get the query parameters with javascript on the called javascript file like this: // in html < ... I have to use the server? See Question&Answers more detail:os...

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

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557 views

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c# - Change db table name in EF4 (entity framework 4)

Does anyone know how to change the mapped db table for an entity in EF4 (entity framework 4)? Later edit: I ... table name in the xml schema. See Question&Answers more detail:os...

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

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macos - "git pull" broken

I recently upgraded my MacBook Pro to Snow Leopard and "git pull" returns: rakudo $ git pull git: 'pull' is ... here. Hopefully you can :) See Question&Answers more detail:os...

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

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assembly - How to produce a minimal BIOS hello world boot sector with GCC that works from a USB stick on real hardware?

I have managed to produce a minimal boot sector that works with QEMU 2.0.0 Ubuntu 14.04 ... /cirosantilli/d47d35bacc9be588009f#file-lenovo-t400 See Question&Answers more detail:os...

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

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705 views

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pytz - get the DST boundaries of a given timezone in python

Is it possible to get the DST boundaries of a given timezone with pytz? See Question&Answers more detail:os...

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

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615 views

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Python: can't assign to literal

My task is to write a program that asks the user to enter 5 names which it stores in a list. Next, it ... be able to generate a random name. See Question&Answers more detail:os...

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

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497 views

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.net - Creating a distinct list of custom type in C#

I receive a List of en entity framework type and want to only return the distinct values from the List. I'm ... linq in this instance? Thanks. See Question&Answers more detail:os...

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

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451 views

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java - Remove duplicates from integer array

I having a problem with coding this: Write a static method named removeDuplicates that takes as input an array of ... return k; }//endMethod See Question&Answers more detail:os...

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

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php - PHPMailer to use Gmail as SMTP server.Could not connect to SMTP host. Mailer Error: SMTP Error: Could not connect to SMTP host

i am trying to use phpMailer to send confirmation messages to users via email. my code is this: <?php ... true email address in that part See Question&Answers more detail:os...

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

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764 views

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ggplot2 - R: How do I use coord_cartesian on facet_grid with free-ranging axis

Consider some facet_grid plot mt <- ggplot(mtcars, aes(mpg, wt, colour = factor(cyl))) + geom_point() mt + ... will not work for this purpose.) See Question&Answers more detail:os...

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

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655 views

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c# - Async exception handling with void

I'm using Async CTP to write an IO heavy console app. But I'm having problems with exceptions. public static ... my program exists. What gives? See Question&Answers more detail:os...

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

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781 views

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google chrome - Why do browser implementations of HTTP/2 require TLS?

Why does most modern browsers require TLS for HTTP2? Is there a technical reason behind this? Or simply just to ... ://caniuse.com/#feat=http2 See Question&Answers more detail:os...

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

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420 views

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c# - Custom File Properties

I need to following: In my application I have documents. Documents which need to be checked in and out all the ... File Properties to 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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556 views

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java - Response for preflight has invalid HTTP status code 401 - Spring

everyone. I'm new to Angular 2 and Spring Framework. I'm trying a simple get request with an authorization header ... but couldn't get there... See Question&Answers more detail:os...

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

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438 views

1 answer

c# - How do you post a JSON file to an ASP.NET MVC Action?

My iphone client posts the following json to my mvc service. When posting data from html form it ... return SuccessResultForModel(user); } See Question&Answers more detail:os...

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

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539 views

1 answer

java - MySQL Data Truncation Error

I'm working with a fairly simple database, from a Java application. We're trying to insert about 200k of text ... be causing a problem, either. See Question&Answers more detail:os...

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

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953 views

1 answer

numpy - polynomial regression using python

From what I understand polynomial regression is a specific type of regression analysis, which is more complicated than ... a non-linear line? See Question&Answers more detail:os...

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

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