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Detecting an undefined object property

...ined`"); } To check if an object does not actually have such a property, and will therefore return undefined by default when you try and access it: if(!o.hasOwnProperty('myProperty')) { alert("myProperty does not exist"); } To check if the value associated with an identifier is the special va...
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Why is Multiple Inheritance not allowed in Java or C#?

I know that multiple inheritance is not allowed in Java and C#. Many books just say, multiple inheritance is not allowed. But it can be implemented by using interfaces. Nothing is discussed about why it is not allowed. Can anybody tell me precisely why it is not allowed? ...
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Why hasn't functional programming taken over yet?

...programs; No side effects Real-world programs are all about side effects and mutation. When the user presses a button it's because they want something to happen. When they type in something, they want that state to replace whatever state used to be there. When Jane Smith in accounting gets married...
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What is the difference between LR, SLR, and LALR parsers?

What is the actual difference between LR, SLR, and LALR parsers? I know that SLR and LALR are types of LR parsers, but what is the actual difference as far as their parsing tables are concerned? ...
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Stopping scripters from slamming your website

...at does the design, writes the product descriptions, podcasts, blog posts, and moderates the forums. I work with CSS/HTML and am only barely familiar with other technologies. I work closely with the developers and have talked through all of the answers here (and many other ideas we've had). ...
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What is the difference between atan and atan2 in C++?

What is the difference between atan and atan2 in C++? 11 Answers 11 ...
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How to develop Desktop Apps using HTML/CSS/JavaScript? [closed]

...onally. I am a web developer, a coworker of mine recently left for Spotify and said he will be working mostly in JavaScript for the Spotify Desktop app. He said it uses "Chrome frame" and everything inside is done like a web app (HTML/JS/CSS). ...
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getApplication() vs. getApplicationContext()

...s, so here we go: what's the deal with Activity/Service.getApplication() and Context.getApplicationContext() ? 4 Answers...
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Split string into an array in Bash

In a Bash script I would like to split a line into pieces and store them in an array. 22 Answers ...
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How to check if DST (Daylight Saving Time) is in effect, and if so, the offset?

...code uses the fact that getTimezoneOffset returns a greater value during Standard Time versus Daylight Saving Time (DST). Thus it determines the expected output during Standard Time, and it compares whether the output of the given date the same (Standard) or less (DST). Note that getTimezoneOffset...