for & while loops in SNEX?

[Fortune]

I can't use below loop formats in SNEX. Am I missing something or can't we use these loops in SNEX?

int i = 1;

while (i<10 && Math.abs(input)>1)
{
		
}

or

for (int i=0; i<10; i++)
{
		
}

[d.healey]

The only loop construct in SNEX is an iterator for a block using the range-based for loop syntax of C++:

HISE | Docs

(docs.hise.audio)

[Fortune]

@d-healey Thank you for the info. I don't get what the iterator for a block using the range-based for loop syntax is. So the below "for loop" usage can be done with SNEX?

for (int i=0; i<10; i++)
{
		
}

[Matt_SF]

@Fortune in the type section, it says that a
"block is a wrapper around a preallocated buffer of float numbers“
Blocks are used for sample processing. You can't do a for loop in SNEX - but would it be possible to define yourself a block (as you do with array) and iterate through it? (I don't know)

[Christoph Hart]

Actually all those loop types are supported in SNEX, if you take a look at the SNEX test suite, you'll see a bunch of test cases that use them:

HISE/tools/snex_playground/test_files/loop/for_loop2.h at develop · christophhart/HISE

The open source framework for sample based instruments - HISE/tools/snex_playground/test_files/loop/for_loop2.h at develop · christophhart/HISE

GitHub (github.com)

BTW, most features of the SNEX language are covered by a test file, so if you want to explore what is working, you can build the SNEX playground (tools/snex_playground), then click on the SNEX logo on the top left to load any test (there are about 500 tests in there). It's also a great way of reporting bugs within the SNEX language, so if you find anything, just write a test file that reproduces the issue and I'll add it to the list (that's how I implemented most of the SNEX language features).

However in most cases you don't need to write these manual loops and can just iterate every value of a container using the range based for loop. This is a known concept in C++ (and for(n in myArray) is the HiseScript equivalent.

Range-Based For Loops in C++11 - Cprogramming.com

Learn how to easily loop over containers using the new C++11 range-based for loops--and how to add support for range-based for loops to your own classes!

(www.cprogramming.com)