The Paramagnetic Croissant

The Paramagnetic Croissant has asked 4 questions and find answers to 37 problems.

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Xcode is not the same thing as Objective-C, clang, the iOS SDK or the Cocoa Touch APIs.
Casting the return value of standard allocators is harmful.
So is premature optimization.
There exists no language called "C/C++".
Whitespace exists for a reason. So do formatting and code quality tools, compiler warnings and debuggers. Use them.
Regular expressions are not the answer to life, universe and everything.
while(!feof(f)) is always wrong

The Paramagnetic Croissant questions

Specializing std::hash for private member class
Is this use of reinterpret_cast on differently-qualified struct members safe?
Is the strict aliasing rule really a "two-way street"?
How does Rust achieve compile-time-only pointer safety?

The Paramagnetic Croissant answers

Holding a reference to a unique_ptr while looping
How to match open and stat mode_t?
How come this code compile in gcc and what is it actually doing? [duplicate]
Is there a way to disallow pointer comparison in C++?
Incorrect sum when adding up numbers
Converting && (logical and) operator into || (logical or) operator
What is the maximum errno value?
How to scanf only integer?
How does fgets() keep track of what line it's on?
dereference variable address through null structure pointer, no segmentation fault