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What is the difference between “Form Controls” and “ActiveX Control” in Excel 2010?
Using Microsoft Excel 2010, I noticed two kind of controls that can be inserted into a document: Form Controls and ActiveX Controls .
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What is a sealed trait?
Sealed classes are described in 'Programming in Scala', but sealed traits are not.
Where can I find more information about a sealed trait?
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More elegant “ps aux | grep -v grep”
When I check list of processes and 'grep' out those that are interesting for me, the grep itself is also included in the results. For example, to list terminals:
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angular.min.js.map not found, what is it exactly?
When I load the page and check chrome console i find these errors:
2 Answers
2
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Declaring an enum within a class
In the following code snippet, the Color enum is declared within the Car class in order to limit the scope of the enum and to try not to "pollute" the global namespace.
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How to get rspec-2 to give the full trace associated with a test failure?
Right now if I run my test suite using rake spec I get an error:
6 Answers
6
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Concatenate two string literals
I am reading Accelerated C++ by Koenig. He writes that "the new idea is that we can use + to concatenate a string and a string literal - or, for that matter, two strings (but not two string literals).
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What's the difference between `1L` and `1`?
I often seen the symbol 1L (or 2L , 3L , etc) appear in R code. Whats the difference between 1L and 1 ? 1==1L evaluates to TRUE . Why is 1L used in R code?
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Regex that accepts only numbers (0-9) and NO characters [duplicate]
I need a regex that will accept only digits from 0-9 and nothing else. No letters, no characters.
1 Answer
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