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injectを使って合計を求める方法 - Hello, world! - s21g
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Ruby Best Practices -- Blog
All Posts (feed) Solve the problem, not just a problem Geeks are prone to build complex tools to solve problems, but the real goal is to solve the right problems. The Korma blogging tool hits that sweet spot. 2009-04-13 20:11 by James Britt Using Blocks for Robustness One way to look at Ruby's blocks is as anonymous functions and one of the uses of them is to make your code more robust. 2009-04-
Ruby Inside: The Ruby Blog
In math, a unary operation is an operation with a single input. In Ruby, a unary operator is an operator which only takes a single ‘argument’ in the form of a receiver. For example, the – on -5 or ! on !true. In contrast, a binary operator, such as in 2 + 3, deals with two arguments. Here, 2 and 3 (which become one receiver and one argument in a method call to +). Ruby only has a handful of unary
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