假设此代码:
#include <iostream>
struct test {
int a[3];
float b[2];
};
我可以用以下两种方式插入数组:
int main(){
test t = {{1,2,3}, {1.0,2.0}};
return 0;
}
或
int main(){
test t = {1, 2, 3, 1.0, 2.0};
return 0;
}
第二种方法是如何编译的?编译器是否选择每个值并按顺序放入数组插槽?
我想在Elastic中实现以下SQL查询的等价物:
select BookId, PubDate, count(1)
from BookMessages
where BookId in (1,2)
group by BookId, PubDate
因此,我用C#编写了以下查询
var searchresponse = client.Search<BookMessages>(s => s
.Query(q => q
.Bool(bq => bq
.Filter(fq => fq.Terms(t => t.F