Amphibian Variables

V.s = 60 # this is an amphibian variable

def fun():
    # Calling the variable from inside the Sardine Pattern Language
    N('(v s)')
    if random() > 0.8:
        V.s = random() * 80 # setting a random value
  • There are variables called amphibian variables. They are both valid inside and outside the pattern notation.
  • They are defined using the variable V followed by a letter from the alphabet (uppercase or lowercase) : V.a, V.A, V.Z, V.j. These variables can be freely manipulated from the Python side or from the pattern side. They are amphibian because they exist in the two languages.

Here is how you manipulate them:

  • The (v letter) function can access an amphibian variable from inside the pattern language.
  • The (vs letter value) function can set an amphibian variable from inside the pattern language.
def fun(p=0.25):
    # Now having fun with it
    N('(vs s 5~80)') # setting a random value to the variable
    if random() > 0.8:
        v.s = 50
    again(fun, p=0.25)

Amphibian Variables also work in Players:

V.n = [52, randint(40, 60), 72, 35]
Pa * d('supersaw', n='(v n)', p=0.75 )

You can use Amphibian Variables to leverage Python or the pattern syntax for what they do best: patterning or dealing with complex algorithmic transformations. Having them both available makes the pattern syntax even more expressive.

For more exploration of Amphibian Variables, see: