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How to create a custom string representation for a class object?
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@ThomasLeonard: stackoverflow.com/questions/39013249/metaclass-in-python3-5
– Ignacio Vazquez-Abrams
Nov 8 '17 at 18:34
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Is it possible to for SQL Output clause to return a column not being inserted?
... Suweet! I wish it didn't have to use the occasionally buggy MERGE command, but it's perfectly elegant otherwise.
– Tab Alleman
Jan 9 '17 at 19:55
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Stack vs heap allocation of structs in Go, and how they relate to garbage collection
...p and some things go on the stack and some on the heap. In some cases the compiler follows rigid rules (like "new always allocates on the heap") and in others the compiler does "escape analysis" to decide if an object can live on the stack or if it must be allocated on the heap.
In your example 2,...
Why use make over a shell script?
Make seems to me simply a shell script with slightly easier handling of command line arguments.
5 Answers
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C++11 range based loop: get item by value or reference to const
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@racarate: I cannot comment on the overall speed, and I think nobody can, without profiling it first. Frankly, I wont base my choice on the speed, rather the clarity of the code. If I want immutability, I'd use const for sure. However, whether ...
How to print a int64_t type in C
..."\n", t);
you can also use PRIx64 to print in hexadecimal.
cppreference.com has a full listing of available macros for all types including intptr_t (PRIxPTR). There are separate macros for scanf, like SCNd64.
A typical definition of PRIu16 would be "hu", so implicit string-constant concatenat...
Append a Lists Contents to another List C#
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Single Line Nested For Loops
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The best source of information is the official Python tutorial on list comprehensions. List comprehensions are nearly the same as for loops (certainly any list comprehension can be written as a for-loop) but they are often faster than using a for loop.
Look at this longer list comprehension fr...
What is the best way to use a HashMap in C++?
...r was introduced with the C++11 standard revision. Thus, depending on your compiler, you have to enable C++11 features (e.g. when using GCC 4.8 you have to add -std=c++11 to the CXXFLAGS).
Even before the C++11 release GCC supported unordered_map - in the namespace std::tr1. Thus, for old GCC compi...
What does “#define _GNU_SOURCE” imply?
...OSIX-specified functions, where the GNU folks disagreed with the standards committee on how the functions should behave and decided to do their own thing.
As long as you're aware of these things, it should not be a problem to define _GNU_SOURCE, but you should avoid defining it and instead define ...