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Why does C++ need a separate header file?
...understood why C++ needs a separate header file with the same functions as in the .cpp file. It makes creating classes and refactoring them very difficult, and it adds unnecessary files to the project. And then there is the problem with having to include header files, but having to explicitly check ...
Append an object to a list in R in amortized constant time, O(1)?
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If it's a list of string, just use the c() function :
R> LL <- list(a="tom", b="dick")
R> c(LL, c="harry")
$a
[1] "tom"
$b
[1] "dick"
$c
[1] "harry"
R> class(LL)
[1] "list"
R>
That works on vectors too, so do I get the bonus...
To Workflow or Not to Workflow?
...am of developers who will are about to start development of a light weight insurance claims system. The system involves a lot of manual tasks and business workflows and we are looking at using Windows Workflow (.NET 4.0).
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How to define optional methods in Swift protocol?
Is it possible in Swift? If not then is there a workaround to do it?
19 Answers
19
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What is the id( ) function used for?
...questions:
What is the number returned from the function?
It is "an integer (or long integer) which is guaranteed to be unique and constant for this object during its lifetime." (Python Standard Library - Built-in Functions) A unique number. Nothing more, and nothing less. Think of it as a so...
Flattening a shallow list in Python [duplicate]
...imple way to flatten a list of iterables with a list comprehension, or failing that, what would you all consider to be the best way to flatten a shallow list like this, balancing performance and readability?
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In Unix, how do you remove everything in the current directory and below it?
I know this will delete everything in a subdirectory and below it:
10 Answers
10
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The name does not exist in the namespace error in XAML
Using VS2012 working on a VB.NET WPF application. I have a simple MusicPlayer tutorial app I am using to learn WPF. I am converting a C# version of the tutorial to VB.NET step by step.
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“Add as Link” for folders in Visual Studio projects
In Visual Studio, we can "Add as link" to add a link to a file in another project in the solution.
6 Answers
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Optimizing away a “while(1);” in C++0x
...is was necessary to allow?
Yes, Hans Boehm provides a rationale for this in N1528: Why undefined behavior for infinite loops?, although this is WG14 document the rationale applies to C++ as well and the document refers to both WG14 and WG21:
As N1509 correctly points out, the current draft ess...