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Camelcamelcamel is a website that tracks prices of products sold on Amazon. [1] [2] Founded by Daniel Green [3] [4] in 2008 and developed by Cosmic Shovel Inc. [5]In 2015 it was voted as the most popular price tracking tool among Lifehacker readers.
In software engineering, a software design pattern or design pattern is a general, reusable solution to a commonly occurring problem in many contexts in software design. [1] A design pattern is not a rigid structure that can be transplanted directly into source code. Rather, it is a description or a template for solving a particular type of ...
A price channel is a pair of parallel trend lines that form a chart pattern for a stock or commodity. [1] Channels may be horizontal, ascending or descending. When prices pass through and stay through a trendline representing support or resistance , the trend is said to be broken and there is a "breakout".
The Price Sensitivity Meter (PSM) is a market technique for determining consumer price preferences. It was introduced in 1976 by Dutch economist Peter van Westendorp . The technique has been used by a wide variety of researchers in the market research industry.
The observer design pattern is a behavioural pattern listed among the 23 well-known "Gang of Four" design patterns that address recurring design challenges in order to design flexible and reusable object-oriented software, yielding objects that are easier to implement, change, test and reuse.
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Design Patterns: Elements of Reusable Object-Oriented Software (1994) is a software engineering book describing software design patterns. The book was written by Erich Gamma , Richard Helm , Ralph Johnson , and John Vlissides , with a foreword by Grady Booch .
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