gem containers

Label:"' Block in Replace_gem ' when executing rails s: Install the MYSQL2 adapter: ' Gem install Activerecord-mysql2-adapter '" Error: [Email protected]:/var/www/ashelf$ Rails S=booting Webrick= Rails3.2.22.1Application startinginchDevelopment on http://0.0.0.0:3000= = Call with-D to detach= CtrlC to shutdown server Exiting/home/diudiugirl/.rvm/gems/ruby-2.3.0/gems/bundler-1.11.2/LIB/BUNDLER/RUBYGEMS_INTEGRATION.RB:314:inch' BlockinchReplace_gem': Pl

STL is built on generics. Array generics are containers and object types are used as parameters. Function generic algorithm, with the iterator type as the parameter. The generic pointer is an iterator that parameterized the type of the object to which it points. This is just the beginning. Independent container types are generalized to sequences or associated containers, and similar

C ++ study notes 5 Containers and Study Notes containers 1. Use assign The assign operation first deletes all elements in the container, and then inserts the new elements specified by its parameters into the container. Like the constructor for copying container elements, if the two containers have the same type, their meta If the element type is the same, you can

A lot of people have already discovered that by ordering "gem install compass" To install compass, the following exception will be reported when compiling scss using "Compass compile":"File to import not found or unreadable:blueprint/typography"Google a bit, said the new compass has not included compass-bluprint.So I tried to execute the command "gem install Compass-blueprint" and manually install Compass-b

Installation Instructions sudo gem install Cocoapods The error message is as follows: Error:ssl verification error at depth 2:unable to get local issuer certificate (20)Error:you must add/c=us/o=verisign, inc./ou=class 3 public Primary certification to authority local your storeError:ssl verification error at depth 1:unable to get local issuer certificate (20)Must add/c=il/o=startcom ltd./ou=secure Digital certificate signing/cn=startcom Certificat

Ruby-V # view Ruby version Ruby-e ''require "watir"; puts watir: IE: version'' # view watir versionGem-V # gem versionGem update # update all packagesGem update -- System # update rubygems SoftwareGem install rake # Install rake from a local or remote serverGem install rake -- remote # Install rake from a remote serverGem install watir-V (or -- version) 1.6.2 # specifyGem uninstall rake # uninstall the rake packageGem List D # list local packages wit

Understanding Activerecord::concern:Reference: The difference between include and extend:Https://www.cnblogs.com/chentianwei/p/9408963.htmlThe traditional module looks like this:Module M def self.included (Base) Base (a Class) extends a module "Classmethods", and the base class method contains the methods in the "Classmethods" module. base.extendclassmethods Base added a: Disabled method. Base.class_eval do, {where (disabled:true)} end end module Classmethods ... EndEndU

Error:could not find a valid gem ' cocoapods ' (>= 0), here are why:unable to download data from HTTPS://RUBYG ems.org/-errno::econnreset:connection Reset by Peer-ssl_connect (https://rubygems.org/latest_specs.4.8.gz) Two eyes, one stare! Can't download??? What the hell is this? Maybe the wall is too thick?? So, for another source use Bai. Gem Sources--add http://ruby.taobao.org/ Actually Error fetching Ht

To give you illustrator software users to detailed analysis to share the creation of exquisite shiny long projection gem of the production tutorial. Tutorial Sharing: The network naturally has many can automatically grow the projection tool, but the tool can only serve as a kind of medium, the real study president projection, and the flexible application always starts from the practice beginning. In addition, we will use i

STLYesC ++Class Library. Containers in STL have queues.ContainerAnd associated containers, container adapter congtainer adapters: stack, queue, priority queue), bit_set, and string_package. In the series, I will introduce the list, vector, deque and other queue containers, and association containers such as set, multis

#gem install json-v ' 1.8.3 'Building native extensions. This could take a while... Error:error installing json:ERROR:Failed to build gem native extension. /usr/bin/ruby1.9.1extconf.rb/USR/LIB/RUBY/1.9.1/RUBYGEMS/CUSTOM_REQUIRE.RB:36:inch' Require': Cannot load such file--MKMF (Loaderror) from/USR/LIB/RUBY/1.9.1/RUBYGEMS/CUSTOM_REQUIRE.RB:36:inch' Require' fromExtconf.rb:1:inch' '

St indicates that it has lost more than 1 years of*st said that a continuous loss of more than 3 years, and the risk of delisting, at any time may be "delisting" then your money may not be broughtMain Board stock Code Shanghai 60 opening, Shenzhen 000 opening, usually refers to large and medium-sized enterprises; SME Board 002, the beginning of the SME; Gem 300, the beginning of the start, mainly refers to entrepreneurial, high-tech types of enterpris

When using IOS_BAIDUSDK, you need to use the cocoapods, so you need to follow the steps to continue. However, you will encounter some problems in the process:1. Sudo gem install cocoapods run this error1 rubertdemacbook-pro:~ rubert$ sudo gem install cocoapods2 /system/library/frameworks/ ruby.framework/versions/2.0/usr/lib/ruby/2.0. 0/universal-darwin14/rbconfig.rb:213in0407773 ERROR: ' cocoapods'0 in an

To give you illustrator software users to detailed analysis to share the design long drag shadow gem icon effect of the production tutorial. Tutorial Sharing: I. Drawing of Diamonds In my eyes, painting is a very interesting thing, it is to restore our lives on the basis of the addition of our imagination of the world (if you have enough imagination). So imagine the diamond you've seen before. What shape is it? Is it shine

Ruby language upgrades are still more diligent. But a large number of versions make library compatibility a big problem. Some gems indicate that Ruby is explicitly unsupported by a particular version, while some gems are incompatible with a higher version. In addition, the gem itself has a version, it is simply chaos into a porridge. Even with ruby versioning tools such as RVM and rbenv, you can't avoid falling into a hole. And some other environmenta

Starling is an open-source Message Queue Server written in Ruby. For more information, see: Http://www.ooso.net/archives/506 The following exception occurred when installing Starling for the server today. Briefly describe the solution. When you execute gem install memcache-client Starling, the following error occurs: Error: http://gems.rubyforge.org/does not appear to be a rep The reason is that the great GFW shielded http://gems.rubyforge

GEM::INSTALLERROR:NET-SSH requires Ruby version >= 2.0Modify Gemfile, change versionGem'Unicorn'group:test,:d evelopment do gem"rspec-rails",">= 2.5.0"Gem'Factory_girl','2.6.4'Gem'factory_girl_rails','1.7.0'Gem'Faker','1.1.2'Gem'Forgery','0.5.0'Gem'magic_encoding','0.0.2'Gem'Email_spec','1.4.0'Gem'Net-ssh','~> 2.0'Gem'Capistrano','~> 2.15.7'Gem'capistrano-rbenv','1.0.5'Gem'Rb-readline','0.4.2'End Problems w

Some Problems about Gem, problemsgem Advanced Software Engineering When I was doing advanced software engineering jobs today, I encountered some problems: After the new git clone a ruby rails projectBundle InstallSystem Error Prompt"Gem install pg-v '0. 18.3'", After the prompt is installed, the following error is still reported: Again according to the error message, we can see that because of less depen

First, the Synchronization class containerSynchronization class containers are thread-safe, but in some scenarios it may be necessary to lock to protect the composite operation. Compound classes operate such as iterating (repeatedly accessing elements, traversing through all elements in the container), jumping (finding the next element of the current element in the order specified), and conditional operations. These compound operations may exhibit une

Vector of C ++ sequential containers, vector of sequential containers What is container Container, as its name implies, is a place for storing things. C ++ containers store certain data structures for data search or sorting or other special purposes. As we all know, common data structures are similar to arrays.Array, Linked listList, TreeTreeStac