Clean up and add CreateNewExpr to demonstrate creation
Clean up and add CreateNewExpr to demonstrate creation

eliben/code-for-blog,eliben/code-for-blog,eliben/code-for-blog,eliben/code-for-blog,eliben/code-for-blog,eliben/code-for-blog,eliben/code-for-blog,eliben/code-for-blog,eliben/code-for-blog,eliben/code-for-blog,eliben/code-for-blog