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Remove rows with all or some NAs (missing values) in data.frame
I'd like to remove the lines in this data frame that:
16 Answers
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The best way to remove duplicate values from NSMutableArray in Objective-C?
The best way to remove duplicate values ( NSString ) from NSMutableArray in Objective-C?
14 Answers
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rails - Devise - Handling - devise_error_messages
in my user edit page, there is a line as follows:
21 Answers
21
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Find a value anywhere in a database
Given a #, how do I discover in what table and column it could be found within?
18 Answers
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Difference between Fact table and Dimension table?
When reading a book for business objects, I came across the term- fact table and dimension table.
9 Answers
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Paging with Oracle
... procedure which retrieves all quarter of a million records to a dataset using a data adapter, and dataset, and the dataadapter.Fill(dataset) method on the results from the stored proc. If I have "Page Number" and "Number of records per page" as integer values I can pass as parameters, what would b...
Input type=password, don't let browser remember the password
I remember seeing a way to have an <input type="password" /> such that the browser will not prompt the user to save the password. But I'm drawing a blank. Is there an HTML attribute or some JavaScript trick that will do this?
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Freely convert between List and IEnumerable
...List<MyObject> to an IEnumerable<MyObject> and then back again?
6 Answers
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Rails filtering array of objects by attribute value
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Try :
This is fine :
@logos = @attachments.select { |attachment| attachment.file_type == 'logo' }
@images = @attachments.select { |attachment| attachment.file_type == 'image' }
but for performance wise you don't need to iterate @attachme...
What is jQuery Unobtrusive Validation?
I know what the jQuery Validation plugin is. I know the jQuery Unobtrusive Validation library was made by Microsoft and is included in the ASP.NET MVC framework. But I cannot find a single online source that explains what it is. What is the difference between the standard jQuery Validation librar...