道喜技术日记 .^. 天天红玉世界. 代码世界：对于数组的运算符“<<”和“+=”的差异

代码世界：对于数组的运算符“<<”和“+=”的差异

由Gudao Luo在2008-11-27 at 21:53发表的

对于数组的运算符“<<”

a = [1,2,3]
b = [4,5]
a << b
# 变量a结果为：[1,2,3,[4,5]]

对于整数（或者字符串等）的运算符“<<”

a = [1,2,3]
b = 4
a << b
# 变量a结果为：[1,2,3,4]

对于数组的运算符“+=”

a = [1,2,3]
b = [4,5]
a += b
# 变量a结果为：[1,2,3,4,5]

参考资料
- The Basics of Ruby Arrays

Tags: Codes, Ruby, array, operator

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Authors: Gudao Luo

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