Brian Ward comments

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                                            Brian Ward

Add Rhatv5

This appears to be a duplicate of https://github.com/stan-dev/stan/issues/2877

Warning: Declaration of arrays by placing brackets after a type is deprecated

> But I think that will be the last release cycle where that will be the case Correct. An idea which didn’t occur to me until recently is we could...

support arbitrary data type in function block's function signatures

There is a newer stanc3 issue which is similar: https://github.com/stan-dev/stanc3/issues/1348 I'm going to close this older one in favor of it

Expose stan::math::hessian and stan::math::hessian_times_vector as methods in the stan::model class

Possible after https://github.com/stan-dev/stan/pull/3144

compiler allows ragged array expressions

Closing in favor of https://github.com/stan-dev/stan/issues/3150

[WIP] Add Pathfinder and Multi Pathfinder

Merging this broke the Windows CI, which is why the submodules in CmdStan haven't updated: https://jenkins.flatironinstitute.org/blue/organizations/jenkins/Stan%2FStan/detail/develop/131/pipeline

parameter bounds far from optimal solution still affect optimization

This issue is because the default setting for optimization is without the jacobian adjustment for constrained variables. Enabling it in recent versions of Stan recovers alpha $\approx$ 0.5

Feature request: variable-length argument lists to user-defined functions

There is a newer stanc3 issue which is similar: https://github.com/stan-dev/stanc3/issues/1348 I'm going to close this older one in favor of it

threaded gq facility

https://github.com/stan-dev/stan/pull/3212 Added this for running over multiple chains, which seems like the best way to parallelize while avoiding the rng issues above

Add stanfunctions extension to Stan

I understand the objections to allowing any language to add arbitrary extensions, but I fear it has created a bit of a chicken and egg problem. I can name several...