Functional sequences can be subset using single or double brackets.
A single-bracket subset results in a new functional sequence, and
a double-bracket subset results in a single function.
     
    
    Usage
    # S3 method for class 'fseq'
x[[...]]
# S3 method for class 'fseq'
x[...]
 
     
    
    Arguments
- x
 
A functional sequence
 
- ...
 
index/indices. For double brackets, the index must be of length 1.
 
 
    
    Value
    A function or functional sequence.