isOpen(bamReader), isOpen(bamWriter): Checking for opened file connection to BAM file.

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Description

Checks whether the given bamReader or bamWriter represents an opened connection to a BAM-file.

Usage

1
isOpen(con,rw="")

Arguments

con

An instance of class bamReader or bamWriter.

rw

This argument is included solely for compatibility with the function template for connections in package base. It's not evaluated internally.

Details

The function acutally checks, if the externalptr (reader or writer) slot has nil-value.

Methods

signature(object = "bamReader")

Returns TRUE when file connection is open.

signature(object = "bamWriter")

Returns TRUE when file connection is open.

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