environment

问题 I want to run a standalone ruby script in which I need my RoR environment to be used. Specifically, I need my models extending ActionMailer and ActiveRecord. I also need to read the database configuration from my database.yml. How do I go about it? 回答1: The easiest way is to change the shebang of your script from : #!/usr/bin/ruby to #!/path/to/your/rails/script/runner Et voilà, your script will be run with the full rails environment loaded. You can also run your script as ./my_script -e

问题 I looked in Stevens, and in the Posix Programmer's Guide, and the best I can find is An array of strings called the enviroment is made available when the process begins. This array is pointed to by the external variable environ , which is defined as: extern char **environ; It's that environ variable that has me hesitating. I want to say -The calling process/shell has already allocated the block of null terminated strings -the 'external' variable environ is used as the entry point by getenv()

问题 I'm debugging an 64-bit application where c# exe is using native c++ dll, on Windows 7. It seems environment variables are different for these two, even though they are both executing in the same process. How is it possible that calling System.Environment.SetEnvironmentVariable has no effect on values returned by getenv()? 回答1: The environment variables are just a blob of data which gets passed by windows to the process when it starts. The runtime functions you are using (The BCL for System

问题 At http://shiny.rstudio.com/articles/scoping.html the rules for scoping in shiny are well explained. There are 3 environments or levels nested inside each other: objects available within a function, within a session and within all sessions. Using <- will change the object within the environment you are in and <<- will change it globally i.e. for all sessions. What if I define a variable within the session but want to change it from within a function? <- will just change it within the function

问题 At http://shiny.rstudio.com/articles/scoping.html the rules for scoping in shiny are well explained. There are 3 environments or levels nested inside each other: objects available within a function, within a session and within all sessions. Using <- will change the object within the environment you are in and <<- will change it globally i.e. for all sessions. What if I define a variable within the session but want to change it from within a function? <- will just change it within the function

问题 I'm trying to keep along with the Tekpub Build your own blog on rails screencast. I'm still very much a ruby novice and the problem is that I have Rails 3 installed while Rob uses an older version (Of the top of my head: version 2.3.2). I know how to get that version of rails with gem install rails --version=2.3.2 but when I type rails new the version of the application is rails 3. How do I make this particular app work with the older version? I know this has something to do with rvm but I

问题 My Spring Boot application runs with 3 configurations: application.properties --> for development environment application-test.properties --> for test environment application-production.properties --> for production environment How is it possible to get in thymeleaf environment the application is running? I need to include the Google Analytics code only in production environment. 回答1: You can do the following if you only have one profile active at a time. <div th:if="${@environment

问题 I have been tasked to develop an interactive website using java & mysql: using servlets to retrieve & massage data, applets to do special handling of the data client-side, and to handle requests from the client for different data views. What would you recommend as an proper general-purpose toolkit/environment for web development using java. I need to know what to use for the following: Server side (tomcat?/?) CMS Editor / IDE General tools/utilities Directed (special purpose) tools/utilities

问题 I am using seed.rb to populate both my development and production database. I usually populate the first with dummy data and the latter with the real minimal data that my app needs to run (e.g. the first user and so on). How can I specify in seed.rb for what environment each data is? Given that I know "group" to be a Gemfile method, I'd like to achieve the same behavior for seed.rb. E.g. I'd like to write something like this in my seed.rb: group :development do # development specific seeding

问题 I'm trying to find a way to dynamically build en environment variable that contains a list of JAR files under my app's WEB-INF/lib folder. This is what I have so far, but it's over-writing itself each time, so when you reach the end of the loop, you just have the last file from the loop set in the variable. SETLOCAL ENABLEDELAYEDEXPANSION for %%f IN (WEB-INF/lib/*.jar) DO ( SET JAR_LIST=%JAR_LIST%;%%f ) ECHO JAR_LIST -- %JAR_LIST% So this produces... C:\apache\Tomcat6.0\webapps\myapp>(SET JAR