我定义了这个方法:
# @return [Array<String>] items
def produce_items
["foo", "bar", "baz"]
end
很明显,正确的用法是,
produce_items.each do |i|
puts i
end
但这是我写的,默默地什么也不做
produce_items do |i|
puts i
end
是否有一种方式来声明produce_items,使我的不正确使用会产生错误/异常?如果做不到,那么另一个解释器能做到吗?像或这样的静态分析工具能做到吗?
我怀疑这
我有以下代码,变量s的输出始终为零:
double v = high; double s; double h;
if (v == 0) {
s = 0;
h = 0;
System.out.println("v and s and h is zeroo" + v + s + h);
} else {
s = (high - low) / high;
System.out.println("s is equal to" + s);
System.out.println("high is equal to