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Underscore: sortBy() based on multiple attributes
I am trying to sort an array with objects based on multiple attributes. I.e if the first attribute is the same between two objects a second attribute should be used to comapare the two objects. For example, consider the following array:
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Functional programming - is immutability expensive? [closed]
...orst case.
Implementing a functional variant of quicksort that operates on arrays defeats the purpose. Arrays are never immutable.
The “proper” functional implementation of quicksort uses immutable lists. It is of course not in-place but it’s got the same worst-case asymptotic runtime (O(n^2))...
How to initialize array to 0 in C?
I need a big null array in C as a global. Is there any way to do this besides typing out
2 Answers
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JavaScript: How to join / combine two arrays to concatenate into one array? [duplicate]
I'm trying to combine 2 arrays in javascript into one.
1 Answer
1
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Better way to sum a property value in an array
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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 extends Array {
sum(key) {
return t...
Suppress Scientific Notation in Numpy When Creating Array From Nested List
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Python Force-suppress all exponential notation when printing numpy ndarrays, wrangle text justification, rounding and print options:
What follows is an explanation for what is going on, scroll to bottom for code demos.
Passing parameter suppress=True to function set_printoptions works only f...
Why is string concatenation faster than array join?
... browser to optimize string concatenation. Beginning with version 1.0, the array technique is actually slower than using the plus operator in all cases. Other browsers have also optimized string concatenation, so Safari, Opera, Chrome, and Internet Explorer 8 also show better performance using the p...
How do you copy the contents of an array to a std::vector in C++ without looping?
I have an array of values that is passed to my function from a different part of the program that I need to store for later processing. Since I don't know how many times my function will be called before it is time to process the data, I need a dynamic storage structure, so I chose a std::vector ....
Numpy array dimensions
I'm currently trying to learn Numpy and Python. Given the following array:
8 Answers
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PHP function overloading
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case 1:
return call_user_func_array(array($this, 'funcOneWithOneArg'), $args);
case 3:
return call_user_func_array(array($this, 'funcOneWithThreeArgs'), $args);
}
case 'anotherFunc':...