The Algorithm Design Manual by Steve Skiena isn’t exactly a barrel of laughs, but it’s relatively light on the deeper mathematics and contains lots of what he calls “War Stories”, which are illustrative examples from real world situations where algorithm work really paid off (or, sometimes, totally failed). He’s also got his audio and video … Read more
I don’t think it is possible, c# only allows you to use Attributes with constant values only. One way of doing this would be to create a class instead of a func, and then you pass the type of that class into the attribute. You’d then need to instantiate it with reflection and execute a … Read more
I don’t think there is any technical difference. Reference wrapper provides basic pointer functionality, including the ability to change the target dynamically. One benefit is that it demonstrates intent. It tells people who read the code that “whoever” has the variable, isn’t actually controlling its lifespan. The user hasn’t forgotten to delete or new anything, … Read more
Shortly, you can’t do that (at least for SqlServer). The explanation is contained in EF Core documentation – Raw SQL Queries – Composing with LINQ: Composing with LINQ requires your raw SQL query to be composable since EF Core will treat the supplied SQL as a subquery. SQL queries that can be composed on begin … Read more
In C++11, no – there’s no penalty. I would even consider it a very good style to not pollute any “more visible” scopes with you implementation details, unless, of course, you want to reuse that functor elsewhere. However, lambdas are essentially a condensed form of this idea, and should usually be preferred if you are … Read more
Firstly, you only have to do this when you create your own constructors. This is due to the fact that on instantiation it won’t know which one to use. Secondly, note that (by default) the deserializer will use the property and constructor names and overwrite the ones you omit in the actual constructor type. Furthermore, … Read more
This would probably interest you, but here is a short version: When you assemble the .cpp, .c or whatever files, each translation unit (that is, each file) generates an object file. When creating the final executable, you combine all the object files into a single binary. For static libraries, you compile the static archive (.a … Read more
File.ReadLines was introduced in .NET 4.0 var count = File.ReadLines(file).Count(); works in 4 seconds, the same time as the first code snippet
std::function<int(int)> bar = std::bind(foo, 2, std::placeholders::_1);
According to this bugreport, install(TARGETS) command flow accepts only targets created within the same directory. So you need either move the add_library() call into the top-level directory, or split install(TARGETS) call into per-target ones, and move each of them into the corresponding subdirectory. Since CMake 3.13 install(TARGETS) can work even with targets created in other … Read more