Gem Common commands
Gem-v # View version of RubyGems software
gem help #显示RubyGem使用帮助
Gems help Example #列出RubyGem命令一些使用范例
gem install [gemname] # ann Install the specified gem package, the program will first find the GEM package from this machine and install, if not locally, from the remote gem installation.
gem Install-l [gemname] # Install gem packages from the native only gem
install-r [gemname] # Install GEM package from remote only gem
install [gemname]--version=[ Ver] # Install th
Tags: server database ASP. NET Web Site Program Lite versionGreen integrated Environment PHPWAMP8.8.8.8 the latest version will be released soon! (will be starting in 51CTO blog: http://lccee.blog.51cto.com/)Update: Next week is about to update the latest version phpwamp!The latest version supports both PHP, ASP, and ASP. NET Site program (all free installation completely pure green, one click Delete domain name port)On the request I support JSP website students, first wait, maybe the next vers
/loading_multiple_versions_of_s.html
Loading multiple versions of same Assembly
The other day a colleague asked if there was a way he cocould work with different versions of the same assembly in his code I. e. could he invoke say method A on version 1.0 and method B on version 2.0 of the same assembly?
I was initially surprised as to why he wowould want to do that? People ask about being able to automatica
Similarities and differences between Oracle Enterprise Edition, Standard Edition, and other versions, oracle Enterprise Edition
For different development and deployment environments, Oracle divides the same series of Oracle databases into four versions: Standard Edition One, Standard Edition, and Enterprise Edition) and Personal Edition ).
Address: http://blog.csdn.net/sunansheng/article/details/46129589
1.
The SQL Server online help provides a detailed description.
--> Directory
--> SQL Server Architecture
--> Detailed Implementation Rules
--> SQL Server 2000
Various versions of SQL Server 2000
The available versions of Microsoft SQL Server 2000 are as follows:
SQL Server 2000 Enterprise Edition
Used as a production database server. Supports all available functions in SQL Server 2000 and supports the largest
Similarities and differences between Oracle Enterprise Edition, Standard Edition, and other versions, oracle Enterprise Edition
For different development and deployment environments, Oracle divides the same series of Oracle databases into four versions: Standard Edition One, Standard Edition, and Enterprise Edition) and Personal Edition ).
1. Standard Edition One
The Standard Edition One is an Oracle versi
Android learning route (19th) Supports different devices-Supports different (Android) platform versions and android routes
When the latest Android version provides great APIs for your application, you need to continue to support the old system version before more devices are updated. This course describes how to use the new advanced API when you continue to support earlier versions of the system.
The Platfo
Differences between versions released by SQL _server
By ben988211: versions---------------------------------------------------------------In 1988, Microsoft and sysbase and Ashton-tate cooperated to port SQL Server to OS/2.1989 Microsoft, sysbase, and Ashton-tate released SQL Server 1 for OS/21990 released SQL server that supports Windows 3 clients1992 Microsoft and Sybase move
Background: in many cases, we need to create multiple targets in one project. That is to say, we want to create two applications with the same code, which can be placed on a simulator or on a real machine, or, we usually have more than N developers. During the test, we installed the one written by test a here. When we need to test the code written by Test B, we need to install it in B. If there is only one target, a will be overwritten.Sometimes, we need to determine whether it is a problem or B
Depending on the project needs, there may be different versions of the QT program to run on the same machine, This experiment is qt4.8.5 and qt5.3.1 developed by the same machine, the machine can not follow any version of QT, of course, two versions of QT development must be the same as the number of machines, for example, 32-bit or 64-bit.Two versions of QT prog
Windows Vista Product Version classification
In various versions of Windows Vista, there are two broad categories of home and business that correspond to each version of Windows XP. XP is currently divided into Windows XP Starter, home, Media Center, Professional, Professional x64, and Tablet PCs.
Home will be divided into:
Windows Starter 2007 (primary version)
Windows Vista Home Basic (primary family Edition) [There is also a house basic N speci
Reference multiple versions of the same class library in the same item.
How to reference multiple versions of the same class library in the same item?
In the same project, you may need to introduce multiple versions of A class library at the same time. For example, most of the functions are implemented based on version 1.0 of Class, now there is A special funct
Mac comes with python2.x version, sometimes need to use python3.x version to do development, but can not delete python2.x, may cause system instability, then need to install multiple versions of Python under this article to introduce you to Mac To switch python multiple versions of the method, need to see the friends together
Mac comes with python2.x version, sometimes need to use python3.x version for de
Switch between multiple versions of Python on Mac and python on mac
Python 2.x is installed on Mac. Sometimes Python 3.x is used for development, but Python 2.x cannot be deleted, which may cause system instability. Therefore, multiple versions of Python must be installed.
1. Install Python 3.x. I have installed Python 3.6.1;
2. Open the terminal and enter sudo vi ~ /. Bashrc;
3. On the top of the pop-u
First, preparewampserver2.5PHP5 versions php5.2 to php5.6apache2.2 and apache2.4Second, installationThe first successful installation of wampserver2.5, if the installation is not successful, many are VC11 not installed well. To its official website to download, click on the download if not installed will download a TXT file, there is a VC download address. I am directly download a apache2.2 installation program (note that the installation will wampse
This article describes how to install PHP, mysql, and apache in WampServer. if you want to debug a PHP program, some functions used in this program cannot be used in earlier versions. Therefore, you can only create a later version of php.
As Web developers, installing different versions of php on machines, apache and mysql are sometimes necessary.
The following are
PHP of different
Json versions earlier than php5.4 do not support solutions that do not escape Chinese content ,. PHP 5.4 or earlier versions of json do not support the solution of Chinese without escaping content. This article describes how to solve the problem that PHP 5.4 or earlier versions of json do not support Chinese without escaping content. The solution for json
Now we can select a lot of browsers, so there are also a wide variety of browser environments, the same browser also contains a variety of different versions, there are also differences between different versions of the rendering method, i'm afraid they support different HTML5 and CSS3 features. This situation causes Web developers to face a large number of browser types when developing websites. If the dev
Since the advent of jquery, there has been a growing number of versions, and the new version of the jquery website is constantly being updated and released, but we have already used previous versions of jquery, such as 1.3.X, 1.4.X, 1.5.X, 1.6.2, and so on.Before the modification of the foreground page, I encountered such problems, I use the latest jquery version, before the program with the old jquery libr
There are two main toolkits for working with Excel in Java: JXL and POI. JXL can only manipulate Excel 95, 97, or 2000, which is the. xls suffix of Excel, which the individual believes is already obsolete, and that the POI can manipulate Excel 95 and later versions of Excel with the suffix. xls and. xlsx two formats.POI full name Poor obfuscation implementation, literal translation "poor fuzzy implementation", of course, is not pathetic and very pract
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