check.wf — Abjad v1.1.1 documentation

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# check.wf

`abjad.tools.check.` `wf`(expr, delivery='boolean', runtime='composition')

  Run every check in the `check` module against expr.

  Set the runtime keyword to `composition` to run only those checks appropriate at composition-time. Abjad allows empty containers at composition-time. Empty container checks will NOT run.

      abjad> check.wf(Voice([ ]), runtime = 'composition')
      True

  Set the runtime keyword to `format` to run the complete set of checks appropriate at format-time. LilyPond does NOT allow empty containers at format-time. Empty container check WILL run.

      abjad> check.wf(Voice([ ]), runtime = 'format')
      False

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