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Online forums provide peer-to-peer technical support for many user populations, including programmers struggling to master a new language. Programmers can help one another by uploading code samples to such a forum. Unfortunately, finding relevant code samples can prove difficult using existing search engines for large, diverse forums. Therefore, we have prototyped a new kind of code search engine...
A perennial problem with online repositories of end-user programmers' code is the low level of reuse, including in situations where existing code might aid in learning. This paper presents a formative study of middle-schoolers learning the Scratch animation environment, which revealed that they struggled to find short pieces of code that they could reuse directly, or from which they could discover...
The proliferation of end-user programmers' code in open source repositories provides opportunities for others to reuse code to solve programming problems, learn new programming techniques and to get inspiration. Unfortunately, code reuse by end-user programmers is low. In this paper, I propose a novel search mechanism called “Behavior-based code search” (BBCS) that assists end-user programmers discover...
Visual languages have been widely used to help people create animation programs. However, current programming environments lack features supporting efficient code exploration and program comprehension, particularly for understanding relationships among parts of animation programs. In this paper, we present novel interactive visualizations aimed at helping people to understand animation programs. We...
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