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How to check a not-defined variable in JavaScript
I wanted to check whether the variable is defined or not. For example, the following throws a not-defined error
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How to create a file in a directory in java?
If I want to create a file in C:/a/b/test.txt , can I do something like:
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Objective-C ARC: strong vs retain and weak vs assign
There are two new memory management attributes for properties introduced by ARC, strong and weak .
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What is LINQ and what does it do? [closed]
What is LINQ? I know it's for databases, but what does it do?
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Is multiplication and division using shift operators in C actually faster?
Multiplication and division can be achieved using bit operators, for example
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Why are interface variables static and final by default?
Why are interface variables static and final by default in Java?
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Cleanest way to toggle a boolean variable in Java?
Is there a better way to negate a boolean in Java than a simple if-else?
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Heroku/GoDaddy: send naked domain to www [closed]
I am trying to figure out how to get the naked domain for my website to redirect to the www domain. I am using Heroku and have the domain from GoDaddy. Because of Heroku, my A records are already set up as:
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Differences between Exception and Error
I'm trying to learn more about basic Java and the different types of Throwables, can someone let me know the differences between Exceptions and Errors?
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Iterate through a HashMap [duplicate]
What's the best way to iterate over the items in a HashMap ?
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