spec

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Suppose there is a table _ _ a 1 a 2 b 2 c 3 c 4 c 1 d 2 e 5 e 6 How can I select distinct minimum value of all the rows of each group? So the expected result here is: _ _ a 1 b 2 c 1 d 2 e 5 EDIT My actual table contains more columns and I want to select them all. The rows differ only in the last column (the second one in the example). I'm new to SQL and possibly my question is ill-formed in it initial view. The actual schema is: | day | currency ('EUR', 'USD') | diff (integer) | id (foreign key) | The are duplicate pairs (day, currency)

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have this query UPDATE trh_adminLoginDate SET superseded = true WHERE EXISTS (SELECT * FROM trh_adminLoginDate AS a2 WHERE a2.adminId = a.adminId AND a2.loginDate > a.loginDate AND a2.clientPlatform = a.clientPlatform) and table look like this. +----------------+--------------+------+-----+---------+----------------+ | Field | Type | Null | Key | Default | Extra | +----------------+--------------+------+-----+---------+----------------+ | id | bigint(20) | NO | PRI | NULL | auto_increment | | dateCreated | datetime | NO | | NULL | | |

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I am new to Scala and I am trying to use ScalaTest . I included its dependency in my build.sbt file as libraryDependencies++=Seq( "org.scalatest" % "scalatest_2.11" % "2.1.7" % "test" ) and refreshed sbt and now it appears in my External Libraries folder so I think it was installed correctly. Now I want to make a test class. So I created one under src/test/scala. I used the example from the ScalaTest website's frontpage which is import collection.mutable.Stack import org.scalatest._ class ExampleSpec extends FlatSpec with Matchers { "A Stack

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: This is my Gemfile config: group :development, :test do gem 'rspec-rails' gem 'factory_girl', '~>2.0.0.beta1' gem 'factory_girl_rails', :git => 'https://github.com/thoughtbot/factory_girl_rails.git', :tag => 'v1.1.beta1' end This is my spec_helper.rb : # This file is copied to spec/ when you run 'rails generate rspec:install' ENV["RAILS_ENV"] ||= 'test' require File.expand_path("../../config/environment", __FILE__) require 'rspec/rails' require "factory_girl" # Requires supporting ruby files with custom matchers and macros, etc, # in spec

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I am using SQL Server 2008 R2 Standard (version 10.50.1600.1) for my production website and SQL Server Express edition with Advanced Services (v10.50.1600.1) for my localhost as a database. Few days back my SQL Server crashed and I had to install a new 2008 R2 Express version on my localhost. It worked fine when I restored some older versions taken from Express edition but when I try to restore database from .bak file which is taken from production server it is causing the following error: Error: Specified cast is not valid. (SqlManagerUI)

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have some code that looks like self = @ and then later on it's using @someMethodName or self.someMethodName Does @ have some special meaning? 回答1: @ is not a valid character for a javascript identifier. Identifiers may only contain $ , _ , digits and letters. In coffeescript, @ means this . CoffeeScript has a few nice features related to the this keyword. First, CoffeeScript uses the @ symbol as shorthand for this.. For example, @foo is equivalent to this.foo. Second, if you use the @ symbol in the parameters of a function, CoffeeScript

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: When running my specs with rspec & capybara, it can't find capybara's visit method. Is there another initialization step I need to do? $bundle exec rspec spec /home/brian/projects/expense_track/expense_track/spec/requests/homepage_spec.rb:6:in `block (2 levels) in ': undefined method `visit' for #0xb6572b8> & ''

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I can't login WINEHQ Bugzilla, so I ask here and this is the requirement: We have a windows app which we have exe source code, and it used ATL. The dlls the exe depends require some special device, but mostly they have linux version. Now we need to port the windows app to linux. My finally try: write a middle dll to wrap some lib which already is cross platform, the exe will call new middle dll, and I name the middle dll is "WINE custom build-in dll". CUSTOM means I compile this dll.so standalone by winemaker. Everything is fine until run it

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: I cannot get my test to run using phantomJs. gulp task var jasminePhantomJs = require ( 'gulp-jasmine2-phantomjs' ); gulp . task ( 'test' , function () { return gulp . src ( './SpecRunner.html' ) . pipe ( jasminePhantomJs ()); }); SpecRunner.html <script src = "lib/jquery.min.js" ></script> <script src = "lib/lodash.min.js" ></script> <script type = "text/javascript" src = "lib/jasmine-2.0.0/jasmine.js" ></script> <script type = "text/javascript" src = "lib/jasmine-2.0.0/jasmine-html.js" ></script> <script type = "text/javascript"

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: What Servlet Spec and JSP version does Jboss 4.2.3 support? 回答1: That depends on the Tomcat version it is using. As per the specs/release notes it is using Tomcat 6.0.x . Thus, it supports Servlet 2.5 / JSP 2.1. 回答2: According to this http://community.jboss.org/wiki/VersionOfTomcatInJBossAS I think it can be read as only unofficial support for Servlet 2.5 and JSP 2.1. So it's safer to assume Servlet 2.4 and JSP 2.0 in JBoss 4.2.3. 文章来源: Servlet Spec for Jboss 4.2.3