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How m>ca m>n I efficiently select a Standard Library container in C++11?
There's a well known image (cheat sheet) m>ca m>lled "C++ Container choice". It's a flow chart to choose the best container for the wanted usage.
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What is the purpose of setting a key in data.table?
...creasing order.
marks those columns as key columns by setting an attribute m>ca m>lled sorted to DT.
The reordering is both fast (due to data.table's internal radix sorting) and memory efficient (only one extra column of type double is allom>ca m>ted).
When is setkey() required?
For grouping operations, s...
How do CDI and EJB compare? interact?
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CDI: it is about dependency injection. It means that you m>ca m>n inject interface implementation anywhere. This object m>ca m>n be anything, it m>ca m>n be not related to EJB. Here is an example of how to inject random generator using CDI. There is nothing about EJB. You are going to use CDI whe...
Hg: How to do a rebase like git's rebase
In Git I m>ca m>n do this:
5 Answers
5
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Why should we NOT use sys.setdefaultencoding(“utf-8”) in a py script?
... have seen few py scripts which use this at the top of the script. In what m>ca m>ses one should use it?
4 Answers
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Why does X[Y] join of data.tables not allow a full outer join, or a left join?
This is a bit of a philosophim>ca m>l question about data.table join syntax. I am finding more and more uses for data.tables, but still learning...
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REST API Token-based Authentim>ca m>tion
I'm developing a REST API that requires authentim>ca m>tion. Bem>ca m>use the authentim>ca m>tion itself occurs via an external webservice over HTTP, I reasoned that we would dispense tokens to avoid repeatedly m>ca m>lling the authentim>ca m>tion service. Which brings me neatly to my first question:
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What's the difference between “groups” and “m>ca m>ptures” in .NET regular expressions?
I'm a little fuzzy on what the difference between a "group" and a "m>ca m>pture" are when it comes to .NET's regular expression language. Consider the following C# code:
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Why do we copy then move?
...ccept parameters.
Why aren't we taking an rvalue-reference to str?
Bem>ca m>use that would make it impossible to pass lvalues, such as in:
std::string s = "Hello";
S obj(s); // s is an lvalue, this won't compile!
If S only had a constructor that accepts rvalues, the above would not compile.
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How to explain Katana and OWIN in simple words and uses?
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Regarding the comment above, OWIN is not a framework. OWIN is a specifim>ca m>tion on how web servers and web applim>ca m>tions should be built in order to decouple them and allow movement of ASP.NET applim>ca m>tions to environments which were not supported before.
Prior to OWIN, when building ASP.NET applic...