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Array include any value from another array?
....include?(food) }
=> true
Benchmark script:
require "benchmark"
N = 1_000_000
puts "ruby version: #{RUBY_VERSION}"
CHEESES = %w(chedder stilton brie mozzarella feta haloumi).freeze
FOODS = %w(pizza feta foods bread biscuits yoghurt bacon).freeze
Benchmark.bm(15) do |b|
b.report("&, emp...
Extending from two classes
...p with.
You can get the functionality from both classes and Still only actually be of one class type.
The drawback is that you cannot fit into the Mold of the Internal class using a cast.
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How do you reverse a string in place in C or C++?
...tead of the end-finding loop.
(Editor's note: this answer originally used XOR-swap for this simple version, too. Fixed for the benefit of future readers of this popular question. XOR-swap is highly not recommended; hard to read and making your code compile less efficiently. You can see on the Go...
Ruby - elegantly convert variable to an array if not an array already
...
@mastaBlasta Array(arg) tries to create a new array by calling to_ary, then to_a on the argument. This is documented in official ruby docs. I learned about it from Avdi's "Confident Ruby" book.
– mambo
Jul 27 '16 at 15:41
...
When should I use double instead of decimal?
...these errors are significant enough to warrant much thought however.
In all cases, if you want to compare two floating-point numbers that should in theory be equivalent (but were arrived at using different calculations), you need to allow a certain degree of tolerance (how much varies, but is typ...
Setting individual axis limits with facet_wrap and scales = “free” in ggplot2
...h a plot of predicted value vs. residuals. I'll be using shiny to help explore the results of modeling efforts using different training parameters. I train the model with 85% of the data, test on the remaining 15%, and repeat this 5 times, collecting actual/predicted values each time. After calcu...
How does RewriteBase work in .htaccess
... want to clear up some details on htaccess.. does a ReWriteBase set it for all rules in the htaccess following what its declaration? is there a way to unset it, can it be reset?
– Damon
Apr 25 '13 at 15:32
...
Is there a UIView resize event?
...ervingBounds() {
boundsObservation = observe(\.bounds) { capturedSelf, _ in
// ...
}
}
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What is the Haskell response to Node.js?
...mmunication with a single client, rather that writing code that deals with all the clients at the same time. Think of it like this: a server that handles multiple clients with threads looks almost the same as one that handles a single client; the main difference is there's a fork somewhere in the f...
removeEventListener on anonymous functions in JavaScript
...ce to it.
var t = {};
var handler = function(e) {
t.scroll = function(x, y) {
window.scrollBy(x, y);
};
t.scrollTo = function(x, y) {
window.scrollTo(x, y);
};
};
window.document.addEventListener("keydown", handler);
You can then remove it by
window.document.remov...