Initialise or return named buffer
buffer  symbol (name), number (duration)
Initialise or return a named buffer with a specific duration (defaults to 8 beats). Useful for working with the :record FX. If the buffer is requested with a different duration, then a new buffer will be initialised and the old one recycled.
Introduced in v3.0
Examples
 
  | # Example 1 | 
  | 
buffer(:foo)
b = buffer(:foo)
puts b.duration 
 | 
# load a 8s buffer and name it :foo
# return cached buffer and bind it to b
#=> 8.0
 | 
 
  | # Example 2 | 
  | 
buffer(:foo, 16)
 | 
# load a 16s buffer and name it :foo
 | 
 
  | # Example 3 | 
  | 
use_bpm 120
buffer(:foo, 16)
                
                
 | 
 
# load a 8s buffer and name it :foo
# (this isn't 16s as the BPM has been
# doubled from the default of 60)
 | 
 
  | # Example 4 | 
  | 
buffer(:foo)    
buffer(:foo, 8) 
buffer(:foo, 10)
buffer(:foo, 10)
buffer(:foo)    
buffer(:foo)    
 | 
# init a 8s buffer and name it :foo
# return cached 8s buffer (has the same duration)
# init a new 10s buffer and name it :foo
# return cached 10s buffer
# init a 8s buffer and name it :foo
# return cached 8s buffer (has the same duration)
 |