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Converting camel case to underscore case in ruby
...ef underscore
self.gsub(/::/, '/').
gsub(/([A-Z]+)([A-Z][a-z])/,'\1_\2').
gsub(/([a-z\d])([A-Z])/,'\1_\2').
tr("-", "_").
downcase
end
end
Then you can do fun stuff:
"CamelCase".underscore
=> "camel_case"
...
Difference between variable declaration syntaxes in Javascript (including global variables)?
...here are a couple of differences, though in practical terms they're not usually big ones.
There's a fourth way, and as of ES2015 (ES6) there's two more. I've added the fourth way at the end, but inserted the ES2015 ways after #1 (you'll see why), so we have:
var a = 0; // 1
let a = 0; // 1...
How to define “type disjunction” (union types)?
...str")
case _: Int => println("int")
}
}
And that's it. You can call foo(5) or foo("abc"), and it will work, but try foo(true) and it will fail. This could be side-stepped by the client code by creating a StringOrInt[Boolean], unless, as noted by Randall below, you make StringOrInt a seale...
git: How to ignore all present untracked files?
Is there a handy way to ignore all untracked files and folders in a git repository?
(I know about the .gitignore .)
8 An...
Better way to sum a property value in an array
...
Updated Answer
Due to all the downsides of adding a function to the Array prototype, I am updating this answer to provide an alternative that keeps the syntax similar to the syntax originally requested in the question.
class TravellerCollection e...
postgresql - replace all instances of a string within text field
In postgresql, how do I replace all instances of a string within a database column?
4 Answers
...
Is a Python list guaranteed to have its elements stay in the order they are inserted in?
...answer so I don't want to add another. He could also use list.append to really put his mind at ease. docs.python.org/2/tutorial/datastructures.html
– NG.
Dec 4 '12 at 0:15
1
...
OAuth with Verification in .NET
... as a console app) to integrate with an OAuth-enabled application, specifically Mendeley ( http://dev.mendeley.com ), which apparently uses 3-legged OAuth.
...
What is exactly the base pointer and stack pointer? To what do they point?
Using this example coming from wikipedia, in which DrawSquare() calls DrawLine(),
8 Answers
...
How do I save and restore multiple variables in python?
...icense" for more information.
>>> from klepto.archives import file_archive
>>> db = file_archive('foo.txt')
>>> db['1'] = 1
>>> db['max'] = max
>>> squared = lambda x: x**2
>>> db['squared'] = squared
>>> def add(x,y):
... return x+y
....
