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ActiveRecord: List columns in table from console
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This will list the column_names from a table
Model.column_names
e.g. User.column_names
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Java: Getting a substring from a string starting after a particular character
...t = url.substringAfterLast("/")
println(result)
// It will show ghfj.doc
From the doc:
Returns a substring after the last occurrence of delimiter. If the string does not contain the delimiter, returns missingDelimiterValue which defaults to the original string.
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Set margin size when converting from Markdown to PDF with pandoc
... convert the .md file into a PDF file (I get an error if I try and convert from the .html file). However, the PDF that is produced have massive margins (like this http://johnmacfarlane.net/pandoc/demo/example13.pdf ). How can I get pandoc to produce something with smaller margins? I have looked ...
How do I disable right click on my web page?
... We are deploying onto kiosk machines and chose this way to disable users from refreshing the page.
– Todd Horst
Jul 31 '13 at 20:08
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How do I simply create a patch from my latest git commit?
I'm looking for the magic command of creating a patch from the last commit made.
5 Answers
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Change R default library path using .libPaths in Rprofile.site fails to work
...ite settings or perhaps is overriding them by reading an .Rprofile setting from one of the RStudio defaults. It should also be mentioned that the result from this operation also appends the contents of calls to .Library and .Library.site, which is further reason why an RStudio- (or any other IDE or ...
Best way to require all files from a directory in ruby?
What's the best way to require all files from a directory in ruby ?
11 Answers
11
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Looking to understand the iOS UIViewController lifecycle
...n simply though:
ViewDidLoad - Called when you create the class and load from xib. Great for initial setup and one-time-only work.
ViewWillAppear - Called right before your view appears, good for hiding/showing fields or any operations that you want to happen every time before the view is visible....
What do
... API docs for Predef that they're subclasses of a generic function type (From) => To, but that's all it says. Um, what? Maybe there's documentation somewhere, but search engines don't handle "names" like "
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Render partial from different folder (not shared)
How can I have a view render a partial (user control) from a different folder?
With preview 3 I used to call RenderUserControl with the complete path, but whith upgrading to preview 5 this is not possible anymore.
Instead we got the RenderPartial method, but it's not offering me the functionality I'...