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Evaluate empty or null JSTL c tags
How can I validate if a String is null or empty using the c tags of JSTL ?
8 Answers
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Use of 'const' for function parameters
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The reason is that const for the parameter only applies locally within the function, since it is working on a copy of the data. This means the function signature is really the same anyways. It's probably bad style to do this a lot thoug...
How to decide between MonoTouch and Objective-C? [closed]
...ono stack. However, since MonoTouch costs $400, I'm somewhat torn on if this is the way to go for iPhone development.
14 A...
How can I sharpen an image in OpenCV?
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One general procedure is laid out in the Wikipedia article on unsharp masking:
You use a Gaussian smoothing filter and subtract the smoothed version from the original image (in a weighted way so the values of a constant area remain constant).
To g...
C# naming convention for constants?
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The recommended naming and capitalization convention is to use PascalCasing for constants (Microsoft has a tool named StyleCop that documents all the preferred conventions and can check your source for compliance - though it is a little bit too anally retentive for many people'...
Double vs. BigDecimal?
...ggest me to use BigDecimal instead of double since it will be more precise. But I want to know what it is and how to make most out of BigDecimal ?
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reference assignment is atomic so why is Interlocked.Exchange(ref Object, Object) needed?
...b service I had a class field _allData of my own type SystemData which consists of few List<T> and Dictionary<T> marked as volatile . The system data ( _allData ) is refreshed once in a while and I do it by creating another object called newData and fill it's data structures with ...
What is the relation between BLAS, LAPACK and ATLAS
...les I find, but I can't find any actual examples using ATLAS to see how it is related with these two.
4 Answers
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Why is the default value of the string type null instead of an empty string?
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Why is the default value of the string type null instead of an empty
string?
Because string is a reference type and the default value for all reference types is null.
It's quite annoying to test all my strings for null b...
Is “else if” faster than “switch() case”? [duplicate]
I'm an ex Pascal guy, currently learning C#.
My question is the following:
14 Answers
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