Ruby on rails gem install pg cannot be installed, rubyrails
gem install pg -v '0.18.2'Building native extensions. This could take a while...ERROR: Error installing pg: ERROR: Failed to build gem native extension. current directory: /Users/bevan/.rvm/gems/ruby-2.3.0/gems/pg-0.18.2/ext/Users/bevan/.rvm/rubies/ruby-2.3.0/bin/ruby -r ./siteconf20160226-49308-
[Android Development] example 4-guess the box in which the gem is stored, android4-A mini game that implements "Guess which box the gem is placed in": There are three boxes in the main interface. clicking any box will open the box and show whether there are any gems in it, in addition, the box that has not been clicked is set to semi-transparent. The box that has been clicked is displayed normally, and the
As shown in the following figure.
1. Document creation
First, create a new file in Photoshop. I use a small size for 300x300 pixels, the default resolution (72), which may be a good idea if you want to make a larger icon after resizing.
You may want to add a nice, simple background. Now, just use the light gradient background.
2. Enable grid/Create graphics
Now, let's start the gem shape. First, you need to make the grid (
Very beautiful transparent texture gem text effect, only need to use the layer style, just set the parameter changes, can make a lot of effect.
Effect Chart:
1. Create a new document, width 600, height 340.
2. Create an adjustment layer, select the gradient, and make the following changes, and create the way your background is displayed:
3. Now use Photoshop's Text tool to create your text, white color. This is the word '
The Ruby on Rails Web site says that running gem install rails after installing Ruby is good.
But the whole process took me a couple of hours. First of all, OpenSUSE 13.1 comes with Ruby 2.0.0p-247, and I offload Ruby because I intend to use rbenv to manage Ruby:
$ sudo zypper rm Ruby
As a result, Konsole is gone, YAST is gone, and it seems that the KDE desktop has been unloaded.
Then you will have to use the system itself. But the
Give you illustrator software users to detailed analysis to share the design of the beautiful texture of the flat gem icon production tutorials.
Tutorial Sharing:
Let's take a look at the final effect chart:
Use the line tool to draw two straight lines perpendicular to each other, so that they intersect exactly at the center of the square. Then use the Split function in the path lookup panel to cut the square into f
Environment: OSX EI 10.11.1After switching to the gem source yesterday, there was no problem with the pod installation, or it could be used$ gem Sources--add https://ruby.taobao.org/--remove https://rubygems.org/$ sudo gem install CocoapodsToday when the use of the time, under a project to execute pod install half a day or so no response, but the CTRL + C forced
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
The following error is always reported when you install the gem.
WARNING: RubyGems 1.2 + index not found:
RubyGems will revert to legacy indexes degrading performance.
Or the gem install is too slow or cannot be connected to timeout.
You can install gem locally.
First go to the gem official website http://rubygems.org/
Recently participated in the seven-cow demo contest, decided to use Ruby development. So I ran into some questions and then solved them, and here's a record.
In Ruby, Gem is a very common thing, it is the equivalent of Plug-ins, Ruby has a lot of great gems, to avoid the repetition of our wheels, my demo need to install gem, but in order to achieve better, first detect whether the
Tags: mysql gem ruby xampp windowsYou may need to generate LIBMYSQLCLIENT.A from Libmysql.dll before: sourceCD C:\xampp-1.8.3\mysql\libC:\DevKit-tdm-32-4.5.2-20111229-1559-sfx\devkitvars.batPexports.exe Libmysql.dll > Libmysql.defSource: C:\strawberry\c\bin\pexports. EXE Fortunately installed Perl, or do not know where to find this pexports tool under theDlltool--input-def libmysql.def--dllname libmysql.dll--output-lib libmysqlclient.a-kC:\redmine-2.6
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
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
Guaranteed Ruby and Gem without problemsRubyinstaller-1.9.2-p180.exe two radio boxes are selected when the installation is installed with an administrator openC:\Documents and Settings\administrator>rubyRuby 1.9.2p180 (2011-02-18) [i386-mingw32]ruby-vUpdate Rubygem gem Update--systemC:\Documents and Settings\administrator>gem-v1.5.2Gem Install/list/uninstall sele
Soul gem bzoj 2663, bzoj2663
Soul gem (1 s 128 MB) soulgem
[Problem description]
"As the soul of your body, in order to better use magic, you have been given a small and safe shape ······"
We know that the life of a magic girl is stored in a device called Soul Gem. Sometimes, when the soul gem is far away from the body
May be the cause of the national firewall package, the installation of Railsinstaller after the execution always error,
Bundle InstallDL is deprecated, fiddleFetching gem metadata from https://rubygems.org/.....Resolving dependencies ...
Gem::remotefetcher::fetcherror:ssl_connect returned=1 errno=0 State=sslv3 ReadServer certificate b:certificate verify failed (https://rubygems.org/gems/rake-1
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.