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PostgreSQL return result set as JSON array?
I would like to have PostgreSQL return the result of a query as one JSON array. Given
2 Answers
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PHP json_encode encoding numbers as strings
I am having one problem with the PHP json_encode function. It encodes numbers as strings, e.g.
17 Answers
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Explanation of JSONB introduced by PostgreSQL
PostgreSQL just introduced JSONB and it's already trending on hacker news . It would be great if someone could explain how it's different from Hstore and JSON previously present in PostgreSQL. What are its advantages and limitations and when should someone consider using it?
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Redis 的性能幻想与残酷现实 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...预期了，不过看了测试前提是规避了网络开销的，Client 和 Server 全在本机。而真实的使用场景肯定是需要走网络的，而且使用的客户端库也是不同的。不过这个官方参考数据当时让我们对 Redis 的性能还是抱有很大的期待的。
另...
select、poll、epoll之间的区别总结[整理] - C/C++ - 清泛网 - 专注C/C++及内核技术
...7/3263780.html
今天对这三种IO多路复用进行对比，参考网上和书上面的资料，整理如下：
1、select实现
select的调用过程如下所示：
（1）使用copy_from_user从用户空间拷贝fd_set到内核空间
（2）注册回调函数__pollwait
（3）遍历所...
Single vs double quotes in JSON
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JSON syntax is not Python syntax. JSON requires double quotes for its strings.
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Reverse of JSON.stringify?
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You need to JSON.parse() the string.
var str = '{"hello":"world"}';
try {
var obj = JSON.parse(str); // this is how you parse a string into JSON
document.body.innerHTML += obj.hello;
} catch (ex) {
console.error(ex);
}
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京东618：算法让UV价值提升200%+，用智能卖场缩短购物路径 - 更多技术 - 清...
...深度学习算法已经应用于自然语言处理中的关键任务环节和CTR预估场景。当然，对于一些新的推荐业务，京东会先用非机器学习的算法上线收集一段用户的行为数据作为训练集，而后才用机器学习算法。
对于未来，京东希望将...
C语言结构体里的成员数组和指针 - c++1y / stl - 清泛IT社区，为创新赋能！
...，所以写下了这篇文章。为了方便你把代码copy过去编译和调试，我把代码列在下面：#include <stdio.h>
struct str{
int len;
char s[0];
};
struct foo {
struct str *a;
};
int main(int argc, char** argv) {
str...
What are the differences between JSON and JSONP?
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JSONP is JSON with padding. That is, you put a string at the beginning and a pair of parentheses around it. For example:
//JSON
{"name":"stackoverflow","id":5}
//JSONP
func({"name":"stackoverflow","id":5});
The result is t...