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JavaScript checking for null vs. undefined and difference between == and ===

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AngularJS - Value attribute on an input text box is ignored when there is a ng-model used?

Using AngularJS if I set a simple input text box value to something like "bob" below. The value does not display if the ng-model attribute is added. ...
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Android Min SDK Version vs. Target SDK Version

When it comes to developing applications for Android, what is the difference between Min and Target SDK version? Eclipse won't let me create a new project unless Min and Target versions are the same! ...
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JSON left out Infinity and NaN; JSON status in ECMAScript?

Any idea why JSON left out NaN and +/- Infinity? It puts Javascript in the strange situation where objects that would otherwise be serializable, are not, if they contain NaN or +/- infinity values. ...
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How does the Google “Did you mean?” Algorithm work?

I've been developing an internal website for a portfolio management tool. There is a lot of text data, company names etc. I've been really impressed with some search engines ability to very quickly respond to queries with "Did you mean: xxxx". ...
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Java: How to test methods that call System.exit()?

I've got a few methods that should call System.exit() on certain inputs. Unfortunately, testing these cases causes JUnit to terminate! Putting the method calls in a new Thread doesn't seem to help, since System.exit() terminates the JVM, not just the current thread. Are there any common patterns...
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Best way to parse command-line parameters? [closed]

What's the best way to parse command-line parameters in Scala? I personally prefer something lightweight that does not require external jar. ...
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What are good grep tools for Windows? [closed]

Any recommendations on grep tools for Windows? Ideally ones that could leverage 64-bit OS. 28 Answers ...
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String concatenation vs. string substitution in Python

In Python, the where and when of using string concatenation versus string substitution eludes me. As the string concatenation has seen large boosts in performance, is this (becoming more) a stylistic decision rather than a practical one? ...
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What is compiler, linker, loader?

I wanted to know in depth meaning and working of compiler, linker and loader. With reference to any language preferably c++. ...