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Type: struct :: Pattern Bool -> Pattern a -> Pattern a

struct places a rhythmic 'boolean' structure on the pattern you give it.

For example:

d1 $ struct ("t ~ t*2 ~") $ sound "cp"

... is the same as ...

d1 $ sound "cp ~ cp*2 ~"

The structure comes from a boolean pattern, i.e. a binary one containing true or false values. Above we only used true values, denoted by t. It's also possible to include false values with f, which struct will simply treat as silience. For example, this would have the same outcome as the above:

d1 $ struct ("t f t*2 f") $ sound "cp"

These true/false binary patterns become useful when you conditionally manipulate them, for example 'inverting' the values using every and inv:

d1 $ struct (every 3 inv "t f t*2 f") $ sound "cp"

In the above, the boolean values will be 'inverted' every third cycle, so that the structure comes from the fs rather than t.

Note that euclidean patterns also create true/false values, for example:

d1 $ struct (every 3 inv "t(3,8)") $ sound "cp"

In the above, the euclidean pattern creates "t f t f t f f t" which gets inverted to "f t f t f t t f" every third cycle.

Note that if you prefer you can use 1 and 0 instead of t and f.

See also mask.