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Can someone explain in simple terms to me what a directed acyclic graph is?

...t a directed acyclic graph is? I have looked on Wikipedia but it doesn't really make me see its use in programming. 13 Answ...
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How to pause a YouTube player when hiding the iframe?

... The easiest way to implement this behaviour is by calling the pauseVideo and playVideo methods, when necessary. Inspired by the result of my previous answer, I have written a pluginless function to achieve the desired behaviour. The only adjustments: I have added a functio...
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jQuery counting elements by class - what is the best way to implement this?

What I'm trying to do is to count all of the elements in the current page with the same class and then I'm going to use it to be added onto a name for an input form. Basically I'm allowing users to click on a <span> and then by doing so add another one for more of the same type of items. But...
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CSS disable text selection

... You could also disable user select on all elements: * { -webkit-touch-callout:none; -webkit-user-select:none; -moz-user-select:none; -ms-user-select:none; user-select:none; } And than enable it on the elements you do want the user to be abl...
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Get selected option from select element

...ted elements use $("select option:selected").length To Get the value of all selected elements use var str = ""; $("select option:selected").each(function () { str += $(this).text() + " "; }); share ...
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JavaScript validation for empty input field

I have this input field <input name="question"/> I want to call IsEmpty function when submit clicking submit button. ...
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Can overridden methods differ in return type?

...pe is assignable to the return type of the method you are overriding, it's allowed. For example: class ShapeBuilder { ... public Shape build() { .... } class CircleBuilder extends ShapeBuilder{ ... @Override public Circle build() { .... } This is specified in section...
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How do you make sure email you send programmatically is not automatically marked as spam?

...these accounts exist, read what's sent to them, and act on complaints. Finally, make it really easy to unsubscribe. Otherwise, your users will unsubscribe by pressing the spam button, and that will affect your reputation. That said, getting Hotmail to accept your emails remains a black art. ...
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What are the implications of using “!important” in CSS? [duplicate]

...e more specific a selector is, the more importance is added to it. This usually coincides with how often the selected element occurs. For example: button { color: black; } button.highlight { color: blue; font-size: 1.5em; } button#buyNow { color: green; font-size: 2em; } ...
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Is it worth hashing passwords on the client side

... Basically, your friend is right. But simply hashing the password on the client side is only just better than submitting it as plain text to the server. Someone, who can listen for your plain text passwords is certainly also able t...