seqr | web-based analysis tool for rare disease genomics | Continuous Deployment library

url is a local variable. Reassigning that variable, which is all this code is doing to it, has no possibility of affecting code outside of this function call. It doesn't make the function impure.

Now, if you were passed in an object, and you started mutating that object, then that would break purity. Because if the component that passed you this object is still using it, then it can "see" that change. For example:

_meta is a reserved field for storing application-specific metadata. It's not meant to be searchable and can be only retrieved through the GET Mapping API.

This means that if your _meta content was intended to be consistent with what the _meta field is designed for, you cannot apply any mappings to it. It's a "final" hashmap of concrete values and would need to be defined at the top level of your update-mapping payload:

From these 2 threads:

https://github.com/redux-form/redux-form/issues/2982

https://github.com/redux-form/redux-form/issues/603#issuecomment-295043224

I figured to supply destroyOnUnmount: false property to my redux form and it worked. To prevent saving form details when we go away from page and go back, I added enableReinitialize parameter also.

Just posted the question and fixed it right away although was pretty desperate. The issue was that I was copy pasting the command in several editors and back and some wrong characters probably were present after --driver-memory 4g. I just deleted spaces (that may not have been spaces) and reinserted them, and it started working. It shard to say why, maybe tab or newline messed it up somehow. I was using Microsoft One Note - maybe it is doing some modifications of spaces...

Expanding on @BioGeek answer, here is the equivalent code to extract the sequence when using PDBParser.get_structure() instead of SeqIO.parse()