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Mapping two integers to one, in a unique and deterministic way
Imagine two positive integers A and B. I want to combine these two into a single integer C.
18 Answers
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Sending command line arguments to npm script
...ed to npm command itself and params passed to your script.
So if you have in package.json
"scripts": {
"grunt": "grunt",
"server": "node server.js"
}
Then the following commands would be equivalent:
grunt task:target => npm run grunt -- task:target
node server.js --port=1337 => n...
Drop columns whose name contains a specific string from pandas DataFrame
I have a pandas dataframe with the following column names:
10 Answers
10
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What's a reliable way to make an iOS app crash?
I want to test my app's crash reporting out in the field by deliberately having it crash when the user performs a particular action that a real user is unlikely to do accidentally.
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What is the maximum recursion depth in Python, and how to increase it?
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It is a guard against a stack overflow, yes. Python (or rather, the CPython implementation) doesn't optimize tail recursion, and unbridled recursion causes stack overflows. You can check the recursion limit with sys.getrecursionlimit:
import ...
Obtaining a powerset of a set in Java
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Yes, it is O(2^n) indeed, since you need to generate, well, 2^n possible combinations. Here's a working implementation, using generics and sets:
public static <T> Set<Set<T>> powerSet(Set<T> originalSet) {
Set<S...
CocoaPods Errors on Project Build
I'm unable to build a project that uses CocoaPods. I get the following errors:
30 Answers
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Easy way of running the same junit test over and over?
Like the title says, I'm looking for some simple way to run JUnit 4.x tests several times in a row automatically using Eclipse.
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White space showing up on right side of page when background image should extend full length of page
Our webpage background images are having problems in FireFox as well as Safari in iOS on iPads/iPhones with white space showing up on the right side of the page.
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AngularJS : Difference between the $observe and $watch methods
I know that both Watchers and Observers are computed as soon as something in $scope changes in AngularJS. But couldn't understand what exactly is the difference between the two.
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