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JavaScript check if variable exists (is defined/initialized)
Which method of checking if a variable has been initialized is better/correct?
(Assuming the variable could hold anything (string, int, object, function, etc.))
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When to use window.opener / window.parent / window.top
...s called
window.parent refers to the parent of a window in a <frame> or <iframe>
window.top refers to the top-most window from a window nested in one or more layers of <iframe> sub-windows
Those will be null (or maybe undefined) when they're not relevant to the referring window's...
Learning Ant path style
...e conventions? I've gone to the Ant site itself, but couldn't find any information on path styles.
5 Answers
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RequestDispatcher.forward() vs HttpServletResponse.sendRedirect()
What is the conceptual difference between forward() and sendRedirect() ?
9 Answers
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RegEx for Javascript to allow only alphanumeric
... find a reg ex that only allows alphanumeric. So far, everyone I try only works if the string is alphanumeric, meaning contains both a letter and a number. I just want one what would allow either and not require both.
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How do you get the logical xor of two variables in Python?
How do you get the logical xor of two variables in Python?
24 Answers
24
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What exactly is an “open generic type” in .NET? [duplicate]
I was going through Asp.Net MVC lesson and learned that, for a method to qualify as an action for a controller,
4 Answer...
Could someone explain the pros of deleting (or keeping) unused code?
...hat unused code must be deleted from the project.
However it is not clear for me "why?".
11 Answers
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MongoDB or CouchDB - fit for production? [closed]
I was wondering if anyone can tell me if MongoDB or CouchDB are ready for a production environment.
19 Answers
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How to write inline if statement for print?
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I think that if condition: statement does not work in case of multiline statements.
– Val
Nov 8 '13 at 12:57
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