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Drop unused factor levels in a subsetted data frame
...
It is a known issue, and one possible remedy is provided by drop.levels() in the gdata package where your example becomes
> drop.levels(subdf)
letters numbers
1 a 1
2 b 2
3 c 3
> levels(dro...
Display JSON as HTML [closed]
...": "sample" }
into
{
"foo": "sample",
"bar": "sample"
}
Now the data is a readable format you can use the Google Code Prettify script as suggested by @A. Levy to colour code it.
It is worth adding that IE7 and older browsers do not support the JSON.stringify method.
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How to disable Golang unused import error
...reats unused import as error, forcing you to delete the import.
I want to know if there exists some hope to change to this behavior, e.g. reducing it to warning.
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Is there a way to get a collection of all the Models in your Rails app?
...ection to search for every classes that extends ActiveRecord::Base. Don't know how you can list all the classes though...
EDIT: Just for fun, I found a way to list all classes
Module.constants.select { |c| (eval c).is_a? Class }
EDIT: Finally succeeded in listing all models without looking at di...
How do I print the type of a variable in Rust?
... used to be as simple as 32.90.eq(&32.90), but that treats both as f64 now and chugs along happily, so I don’t know.
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What is the difference between JavaScript and ECMAScript?
... momentum and is scheduled to release its 6th Edition in a few months from now with the biggest changes its had thus far.
You can use a list of features for ECMAScript 6 here http://kangax.github.io/es5-compat-table/es6/ and also the browser support. You can even start writing Ecmascript 6 like yo...
ASP.NET MVC 5 - Identity. How to get current ApplicationUser
...he past 2 years) but the API is consistent. For example the users table is now called AspNetUsers in Identity Framework, and the names of several primary key fields kept changing, so the code in several answers will no longer work as-is.
Another problem is that the underlying OWIN access to the dat...
Locate current file in IntelliJ
...
In the keymap it's called "Select in..." now.
– seanmcl
Oct 13 '14 at 15:02
3
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Assignment in an if statement
...tion, but the alternatives usually involve code duplication, and when you know this pattern it's easy to get right.
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Switch on Enum in Java [duplicate]
...{
doSomeStuff();
e.method(); // here is where the switch would be, now it's one line of code!
doSomeOtherStuff();
}
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