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warning: incompatible implicit declaration of built-in function ‘xyz’
...an page says this function is a GNU extension and synopsis shows:
#define _GNU_SOURCE
#include <string.h>
When #define is added to my source before the #include, declarations for the GNU extensions are made visible and warnings disappear.
...
创建增量同步Oracle物化视图问题 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术
...这个表上建立物化视图日志如“CREATE MATERIALIZED VIEW LOG ON T_tablename;”，再到数据库B上创建数据库链接和快速刷新的物化视图如“create materialized view mv_tablename refresh fast on demand start with sysdate next sysdate+1/288 as select * from T_tablename@dbli...
Difference between socket and websocket?
...kets are different than websockets . It seems like they're only conceptually similar.
5 Answers
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In Go's http package, how do I get the query string on a POST request?
...ooking for is the POST data as submitted by an HTML form, then this is (usually) a key-value pair in the request body. You're correct in your answer that you can call ParseForm() and then use req.Form field to get the map of key-value pairs, but you can also call FormValue(key) to get the value of a...
How do I make an http request using cookies on Android?
...ookies when I make subsequent requests). It'd be nice to preserve any and all cookies, but really the only one I care about is the session cookie.
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When to use single quotes, double quotes, and backticks in MySQL
...
Michael all sorted now thanks. Might I suggest editing the chart to add bound variables. It is absolutely gorgeous and if another poor soul came along checking on :whatever that would be even more lovely. ATB Steve
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Increasing the maximum number of TCP/IP connections in Linux
...local_port_range = 32768 61000
net.ipv4.tcp_fin_timeout = 60
This basically means your system cannot consistently guarantee more than (61000 - 32768) / 60 = 470 sockets per second. If you are not happy with that, you could begin with increasing the port_range. Setting the range to 15000 61000 is...
做了个购物清单App后，我才真正搞懂App Inventor 2的变量 - App应用开发 - ...
...局部变量"遮蔽"。
解法：全局变量统一加前缀 g_（如 g_count），或用描述性名称（如 totalItemCount）。
坑3：初始化顺序
在 Screen.Initialize 里先用了变量，再初始化它。变量还没创建就被读取，返回空值。
解法：所有...
Convert integer to binary in C#
...o extra code, just input, conversion and output.
using System;
namespace _01.Decimal_to_Binary
{
class DecimalToBinary
{
static void Main(string[] args)
{
Console.Write("Decimal: ");
int decimalNumber = int.Parse(Console.ReadLine());
int...
select count(*) from table of mysql in php
... to alias the aggregate using the as keyword in order to call it from mysql_fetch_assoc
$result=mysql_query("SELECT count(*) as total from Students");
$data=mysql_fetch_assoc($result);
echo $data['total'];
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