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How does one use rescue in Ruby without the begin and end block
... Inline rescue is not a good practice as it rescues StandardError and all its subclasses, like NameError – meaning that even a typo in your code won't raise an error.. See thoughtbot.com/blog/don-t-inline-rescue-in-ruby.
– BrunoFacca
Sep 19 '19 at 18:25
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Rails: How to list database tables/objects using the Rails console?
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To get a list of all model classes, you can use ActiveRecord::Base.subclasses e.g.
ActiveRecord::Base.subclasses.map { |cl| cl.name }
ActiveRecord::Base.subclasses.find { |cl| cl.name == "Foo" }
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Mismatched anonymous define() module
I'm getting this error when I browse my webapp for the first time (usually in a browser with disabled cache).
7 Answers
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How to add item to the beginning of List?
...ssible to insert at the end of the list?
– Gary Henshall
Dec 11 '17 at 14:36
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@GaryHenshall yes,...
is there an easy way to get the http status code in the failure block from AFHTTPClient?
...the operations queue the operationStatusCode will be -999.
You can check all other NSError codes and their descriptions in Apple's documentation
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How do I check out a specific version of a submodule using 'git submodule'?
...answered Jun 6 '12 at 14:34
joemallerjoemaller
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After Installing Java JDK 7 For Mac OS X - mvn -version still shows java version 1.6.0_31
Oracle released Java JDK 7 on April 26 for Mac OS X. I followed the install instructions and when I do java -version in a terminal window I get:
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To find whether a column exists in data frame or not
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all(c("d", "e", "f") %in% colnames(dat))
– skan
Jul 28 '17 at 19:59
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Stop handler.postDelayed()
I call multiple Handlers by new Handler().postDelayed(new Runnable().....
How can I stop it when I click on back?
4 Answer...
How do I make a reference to a figure in markdown using pandoc?
...There are a couple of filters available to make figure reference work with all output formats pandoc-fignos and pandoc-crossref
– joelostblom
Apr 26 '15 at 15:39
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