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What is the difference between quiet NaN and signaling NaN?

...duce that they are all different quiet NaNs. The C11 N1570 standard draft confirms that nanf() generates quiet NaNs, because nanf forwards to strtod and 7.22.1.3 "The strtod, strtof, and strtold functions" says: A character sequence NAN or NAN(n-char-sequence opt ) is interpreted as a quiet N...
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What is the meaning of symbol $ in jQuery?

... can pass it a function to run when the document is ready (similar to body.onload() but better). You can pass it a string of HTML to turn into a DOM element which you can then inject into the document. You can pass it a DOM element or elements that you want to wrap with the jQuery object. He...
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Interface Builder: What are the UIView's Layout iOS 6/7 Deltas for?

... brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 4...
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Isn't it silly that a tiny favicon requires yet another HTTP request? How can I put the favicon into

...he relevant meta tag. This technique avoids the extra http request and is confirmed to work in recent versions of Chrome, Firefox and Opera on Windows 7. However it doesn't appear to work in Internet Explorer 9 at least. index.html <!doctype html> <html lang="en"> <head> ...
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Check if a string is a date value

... could also check that it is not a number (if that's something you want to confirm). var parsedDate = Date.parse(date); // You want to check again for !isNaN(parsedDate) here because Dates can be converted // to numbers, but a failed Date parse will not. if (isNaN(date) && !isNaN(parsedDat...
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How to switch to the new browser window, which opens after click on the button?

... I can confirm accepted solution consistently works in Chrome but not in IE. The new window handle is not recognized in IE. @Elmue is incorrect because getWindowHandles() returns a Set and a Set does not guarantee ordering. The last...
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Update git commit author date when amending

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Creating a new user and password with Ansible

...have python-passlib installed in local machine before we can use it confirm: yes salt_size: 7 - name: "add new user" user: name="{{user_name}}" comment="{{description_user}}" password="{{user_password}}" home="{{home_dir}}" shell="/bin/bash" ...
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What's the meaning of Base SDK, iOS deployment target, Target, and Project in xcode

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What purpose does a tag serve inside of a tag?

... child.tyle = "text/css"; } if (child) { child.onload = callback; head.appendChild(child); } } } else { try { eval(tag.innerHTML); } catch (e) {} } } return { init: init, webfontsReady: webfontsReady }; })(); As y...