Attention is drawn to a particularly dangerous party activity. Balloons filled with lighter gas so as to float are used for party decorations. A case of hand burn caused by accidentally lighting such a balloon with a cigarette is reported. The method is strongly advised against, it is a much better idea to use helium for such purposes.

PerspectiveS allows for dynamic behavior layering in the Squeak environment. Inspired by PIE and based on AspectS, PerspectiveS coordinates contextawareness of a set of aspects, and so allows to decorate a system with context-dependent behavior, without requiring developers of the base system to be aware of potential decorations. The paper illustrates PerspectiveS and its application to dynamic...

The Cantonese sentences in (2) illustrate these claims. They denote past events and there are no markers attached to the verb (subclaim (1a)). Subclaim (1b) is illustrated by the minimal pair in (2b) and (2c): the latter describes a current situation and the former, with the temporal adverb ML FLQ ‘formerly’, describes a past event. (The superscripts in the Cantonese renderings are tone markers.)

Typical approaches to design patterns present them in the catalog form. For undergraduate students this abstract description of the pattern makes it even more difficult to understand its purpose and need. In this paper we describe a tool used at a university course to enable the students to learn architectural patterns by looking at code. The tool presented in this paper shows the solution to a...