React: Building Modern Web Applications

Anonymous helper functions may lack pixie dust

Internally, calendar entries are segregated into one-time and recurring calendar entries. Premature optimization may be the root of all evil, but when it comes to working on calendars on other systems, looking at every calendar entry for every day has worse performance characteristics, roughly O(n * m) instead of the slight mindfulness shown here, which is closer to O(n + m). Calendar entries are displayed as an H2 and a UL, each given a CSS class to facilitate styling (at present, the project has this portion as an unstyled, blank canvas):

    render_upcoming: function() {
      var that = this;
      var result = [];

Note

This code, unusually for the examples we have seen so far, uses the var that = this; hack. In ...