isSpike function in SingleCellExperiment package is deprecated? I am trying to follow a tutorial from Sanger institute (from May 2019) on analysis of single cell RNA Seq data. They use isSpike function to filter out ERCC (control) and MT (mitochondrial RNA) reads, but I am getting an error message that isSpike is a deprecated function. I am trying to use altExp instead as recommended by some people. I can't seem to figure this out. Can anyone provide some code to use instead of isSpike? I am new to bioinformatics. 

I tried to swap out the isSpike function with the altExp function, but I am getting stuck on how to translate the grepl function.
isSpike was provided by SingleCellExperiment. It is now deprecated. The notes in SingleCellExperiment indicate that one should use altExps

I am struggling with a similar problem. Can't compile a package (powsimR) because a dependency uses isSpike (not used in the code directly), so I have to hunt down where it is used by one of a very long list of dependencies.