Function getOrDefault

src/remark/models/slideshow.js:166–174

(key, defaultValue)

  }

  function getOrDefault (key, defaultValue) {
    return function () {
      if (options[key] === undefined) {
        return defaultValue;
      }

      return options[key];
    };
  }
}

function createSlides (slideshowSource, options) {