alias

Is it possible to make an alias for a module in Ruby?

由 独自空忆成欢 提交于 2019-12-03 22:12:17
In Python, you can set an alias for a module with 'as': import mymodule as mm But I can't seem to find an equivalent for ruby. I know that you can include rather than require a module, but this risks namespace collisions. Is there any equivalent to Python module aliases? Modules in Ruby aren't really that special, so you can just assign them to another constant: [4] (pry) main: 0> module TestModule [4] (pry) main: 0* def self.foo [4] (pry) main: 0* "test" [4] (pry) main: 0* end [4] (pry) main: 0* end => nil [5] (pry) main: 0> tm = TestModule => TestModule [6] (pry) main: 0> tm.foo => "test"

Interpreting Alias table testing multicollinearity of model in R

由 喜你入骨 提交于 2019-12-03 21:36:59
Could someone help me interpret the alias function output for testing for multicollinearity in a multiple regression model. I know some predictor variables in my model are highly correlated, and I want to identify them using the alias table. Model : Score ~ Comments + Pros + Cons + Advice + Response + Value + Recommendation + 6Months + 12Months + 2Years + 3Years + Daily + Weekly + Monthly Complete : (Intercept) Comments Pros Cons Advice Response Value1 UseMonthly1 0 0 0 0 0 0 0 Recommendation1 6Months1 12Months1 2Years1 UseMonthly1 0 1 1 1 3Years1 Daily1 Weekly1 UseMonthly1 1 -1 -1 Value,

nginx目录设置 alias 和 root

由 北城余情 提交于 2019-12-03 21:26:58
nginx目录设置 alias 和 root Posted on July 23, 2010 by admin 使用nginx设置root时要注意一个问题，就是如果该root设置的前端目录不是根目录，那么在写root的绝对地址时，要把前端目录的部分省略掉。 我们用设置虚拟目录指向的alias来和root比较一下就非常明显了 alias 1 2 3 location/abc/{ alias/home/html/abc/; } 在这段配置下，http://test/abc/a.html就指定的是 /home/html/abc/a.html。这段配置亦可改成 root 1 2 3 location /abc/ { root /home/html/; } 可以看到，使用root设置目录的绝对路径时，少了/abc,也就是说，使用root来设置前端非根目录时，nginx会组合root和location的路径。 另外，使用alias时目录名后面一定要加“/” 来源： oschina 链接： https://my.oschina.net/u/1409388/blog/179344

Why doesn't my vim know my alias?

由 扶醉桌前 提交于 2019-12-03 20:50:01
问题 I have used "alias ruby=ruby1.9.1", so I can execute my ruby with this: ruby 123.rb or ruby1.9.1 123.rb But in my vim, I use :!ruby and get /bin/bash: ruby: command not found. I must use :!ruby1.9.1 How does alias work? Why vim doesn't know it? 回答1: When Vim starts a process it makes a system call. It has only inherited the environment variables from your shell if you started it from the shell. But it won't know your bash aliases. Bash aliases are only a convenience when you enter a command

rails 3 custom mime type - default view format

由 一曲冷凌霜 提交于 2019-12-03 20:31:36
问题 I need to render some views without layout. To skip line :render :layout=>false and if else logic from controller actions, i have custom mime type like phtml (plain html). Mime::Type.register "text/phtml", :phtml this format need to render the same html views, but only without layout. I complete this with this chunk of code in app. controller: before_filter proc { |controller| if params[:format] && params[:format]=='phtml' controller.action_has_layout = false controller.request.format = 'html

Oracle SQL non-unique table alias in one Select

由 一笑奈何 提交于 2019-12-03 20:12:03
Does somebody know why this works with both table alias "x"? Select x.company_name ,x.employee_name FROM company x JOIN employee x ON x.company_id = 5 I know that the JOIN with id 5 makes no sense... Thanks for the lesson! The first two queries below are equivalent. In the ON clause of the join the table alias x only refers to the last table to use that alias so only the employee table is restricted. In the SELECT and WHERE expressions the x alias refers to both tables - so, where the column names are unique then they can be successfully referenced but where there are identical column names

Is alias_method_chain synonymous with alias_method?

由 心不动则不痛 提交于 2019-12-03 19:01:25
问题 If these two methods are simply synonyms, why do people go to the trouble of writing the additional characters " _chain "? 回答1: No. alias_method is a standard method from Ruby. alias_method_chain is a Rails add-on designed to simplify the common action of aliasing the old method to a new name and then aliasing a new method to the original name. So, if for example you are creating a new version of the method method with the new feature new_feature , the following two code examples are

How to use PowerShell alias cd a spec directory?

由 岁酱吖の 提交于 2019-12-03 18:10:55
问题 On Linux alias cdt='cd /usr/a' make a alias that when I type cdt I change the workpath to /use/a On PowerShell Set-Alias cdt "cd F://a" It seems not work 回答1: Aliases can't use parameters, so define a function instead. function cdt { set-location "F:\a" } 来源： https://stackoverflow.com/questions/29716361/how-to-use-powershell-alias-cd-a-spec-directory

nginx alias+location directive

由 ￣綄美尐妖づ 提交于 2019-12-03 17:19:48
问题 server { listen 80; server_name pwta; root html; location /test/{ alias html/test/; autoindex on; } location ~ \.php$ { fastcgi_pass 127.0.0.1:9000; fastcgi_index index.php; fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; include fastcgi_params; } } This configuration works. However, if location /test/ is replaced e.g. location /testpath/ it doesn't work (No input file specified). I assumed base on the explanation of alias directive that the "location" part is dropped and

How to alias a built-in type in C#?

由 十年热恋 提交于 2019-12-03 16:55:52
问题 So in C++, I'm used to being able to do: typedef int PeerId; This allows me to make a type more self-documenting, but additionally also allows me to make PeerId represent a different type at any time without changing all of the code. I could even turn PeerId into a class if I wanted. This kind of extensibility is what I want to have in C#, however I am having trouble figuring out how to create an alias for 'int' in C#. I think I can use the using statement, but it only has scope in the
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