How does the string constructor handle char of a fixed size when the actual sequence of characters in that char could be smaller than the maximum size?
Suppose you have a function that takes a std::vector of any type and processes it in some way:Since C++14, we are able to achieve the same thing with lambdas. In this case, we call them generic lambdas, since we introduce a template-like deduction to them:
Is there a function that can replace a string within a string once at a specific index of the string? Example:
I was writing some test cases for some convenience methods that I am updating and decided to see what would happen if I used LocalDate's isLeapYear() method on the year 0. As I understand it, year 0 never actually existed: the year before 1 AD was 1 BC. (This is...
I need to migrate my C++ codes to Delphi. There are many checks to check if a given handle(HANDLE) is NULL or not in C++ codes. Then what is the equivalent constant that can be used in Delphi? It seems the null in Delphi is different from NULL in C++.
Consider the following simple example, where I am using std::equal_to to compare two std::pair<std::string, unsigned>. The operator new is overloaded so that it prints a message when allocations take place (live code here):
Have a bunch of lists that are converted from a .txt file that have been read as a collection of strings that look like:
I have a doubt about this thing.If I have this type:I want to instantiate Eq class for ExampleWe can supposed that I have already instantiated the Eq class for Person, so I can compare Person with Person.
I heard some guys telling that the use of rand() is bad EVEN AFTER USING srand() to get a seed. Why is that so? I want to know how the stuff happens... And sorry for another question.. but what is an alternative to this then?
I have a very large text file (around 20 GB and 300 million lines), which contains three columns separated by tabs: