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How do I determine whether my calculation of pi is accurate?
...o if either computation goes bad, the digits at the end won't match.
This does typically more than double the amount of time needed (since the second algorithm is usually slower). But it's the only way to verify the computed digits once you've wandered into the uncharted territory of never-before-c...
Overriding !important style
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I believe the only way to do this it to add the style as a new CSS declaration with the '!important' suffix. The easiest way to do this is to append a new <style> element to the head of document:
function addNewStyle(newStyle) {
var styleEl...
How do I increase the scrollback buffer in a running screen session?
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You'll have to do for each window of the current screen individually.
– Matthew Wilcoxson
Dec 16 '15 at 12:22
2
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How to run a single test from a rails test suite?
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NOTE: This doesn't run the test via rake. So any code you have in Rakefile will NOT get executed.
To run a single test, use the following command from your rails project's main directory:
ruby -I test test/unit/my_model_test.rb -n tes...
Show current state of Jenkins build on GitHub repo
...is assumes you've already got Jenkins with the GitHub plugin configured to do builds on every push.
Go to GitHub, log in, go to Settings, Personal access tokens, click on Generate new token.
Check repo:status (I'm not sure this is necessary, but I did it, and it worked for me).
Generate the to...
What are the main purposes of using std::forward and which problems it solves?
...erences t1 and t2 to unnamed rvalue references. What is the purpose of doing that? How would that affect the called function inner if we leave t1 & t2 as lvalues?
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mongoose vs mongodb (nodejs modules/extensions), which better? and why?
...r way given those options. The question you should be asking yourself is, "Do I want to use the raw driver, or do I need an object-document modeling tool?" If you're looking for an object modeling (ODM, a counterpart to ORMs from the SQL world) tool to skip some lower level work, you want Mongoose.
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scale Image in an UIButton to AspectFit?
...image to fit with the UIButton (make image smaller). Please show me how to do it.
16 Answers
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How do I run Asynchronous callbacks in Playground
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While you can run a run loop manually (or, for asynchronous code that doesn't require a run loop, use other waiting methods like dispatch semaphores), the "built-in" way we provide in playgrounds to wait for asynchronous work is to import the XCPlayground framework and set XCPlaygroundPage.curr...
PHP DOMDocument loadHTML not encoding UTF-8 correctly
I'm trying to parse some HTML using DOMDocument, but when I do, I suddenly lose my encoding (at least that is how it appears to me).
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