大约有 40,000 项符合查询结果（耗时：0.0568秒） [XML]
Load multiple packages at once
...dplyr, psych, tm)
and if the package is missing p_load will download it from CRAN or Bioconductor.
share
|
improve this answer
|
follow
|
...
Rails.env vs RAILS_ENV
...current logger or RAILS_ROOT to get the path to the root folder.
Starting from Rails 2.x, Rails introduced the Rails module with some special methods:
Rails.root
Rails.env
Rails.logger
This isn't just a cosmetic change. The Rails module offers capabilities not available using the standard const...
Setting action for back button in navigation controller
...
Can you actually prevent a view from exiting using this method? What would you make the popViewControllerAnimated method return if you wanted the view not to exit?
– JosephH
Aug 26 '10 at 17:30
...
.NET Process.Start default directory?
I'm firing off a Java application from inside of a C# .NET console application. It works fine for the case where the Java application doesn't care what the "default" directory is, but fails for a Java application that only searches the current directory for support files.
...
Mercurial .hgignore for Visual Studio 2010 projects
...mation about my repositories, so I never copy and paste the .hgignore file from one repo to the next, instead I always build them as I go.
This is easy with TortoiseHg, as the Commit window will list all untracked files, and a simple right-click will allow me to add patterns to ignore those files. ...
Setting a WebRequest's body data
...
With HttpWebRequest.GetRequestStream
Code example from http://msdn.microsoft.com/en-us/library/d4cek6cc.aspx
string postData = "firstone=" + inputData;
ASCIIEncoding encoding = new ASCIIEncoding ();
byte[] byte1 = encoding.GetBytes (postData);
// Set the content type of th...
Extract substring using regexp in plain bash
I'm trying to extract the time from a string using bash, and I'm having a hard time figuring it out.
4 Answers
...
Disable Browser Link - which toolbar
...BrowserLink" value="false"></add>
</appSettings>
or do it from the toolbar:
If that button isn't available, go to VIEW > Toolbars > Standard and make sure it's checked. Keep in mind it's only available in VS2013 and later.
...
Best way to parse command-line parameters? [closed]
...tsbruce I just want to add to/modify your point--it would be most "proper" from a readability/maintainability to define listToOptionMap(lst:List[String]) with the function nextOption defined within that, with a final line saying return nextOption(Map(), lst). That said, I have to confess that I've ...
Prompt Dialog in Windows Forms
... your Project Explorer window then on Add Reference, and check VisualBasic from that list.
share
|
improve this answer
|
follow
|
...