From the course: C++ Templates and the STL
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Testing conditions - C++ Tutorial
From the course: C++ Templates and the STL
Testing conditions
- [Instructor] The STL has a few simple algorithms for testing conditions on ranges of elements. Here I have a working copy of conditional dot CPP from chapter six of the exercise files. These conditional algorithms use a predicate function and so I here have a function called is prime, a template function that takes one argument so it's a unary predicate, and when I come down here into main, you see I have a vector of ints containing a list of prime numbers under 100. And then we have this all of function, which is from the algorithm header, which tests all of the elements in a container against a predicate and in this case, it's testing if they are prime numbers, and it returns true or false. And when I build and run, of course my list of prime numbers are all prime, but if I were to come in here and add another one, say 40, which is not a prime number. And when I build and run, it says false. Course, these don't need to be in order. I can put that wherever I want and it will still…
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