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How to display the function, procedure, triggers source code in postgresql?
...TRICT
AS $function$pg_reload_conf$function$
postgres=# \sf pg_encoding_to_char
CREATE OR REPLACE FUNCTION pg_catalog.pg_encoding_to_char(integer)
RETURNS name
LANGUAGE internal
STABLE STRICT
AS $function$PG_encoding_to_char$function$
...
How to throw a C++ exception
...e the example (of what NOT to do):
#include <iostream>
#include <string>
using namespace std;
class MyException : public exception
{
public:
MyException(const string& msg) : m_msg(msg)
{
cout << "MyException::MyException - set m_msg to:" << m_msg <&l...
Set icon for Android application
... such:
<application android:icon="@drawable/icon_name" android:label="@string/app_name" >
....
</application>
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How do I use Java to read from a file that is actively being written to?
...ed in the console.
public class FileReader {
public static void main(String args[]) throws Exception {
if(args.length>0){
File file = new File(args[0]);
System.out.println(file.getAbsolutePath());
if(file.exists() && file.canRead()){
...
ZeroMQ实例-使用ZMQ(ZeroMQ)进行局域网内网络通信 - C/C++ - 清泛网 - 专注C/C++及内核技术
...q的头文件
#include <zmq.h>
#include "stdio.h"
int main(int argc, char * argv[])
{
void * pCtx = NULL;
void * pSock = NULL;
const char * pAddr = "tcp://*:7766";
//创建context，zmq的socket 需要在context上进行创建
if((pCtx = zmq_ctx_new()) == NULL)
...
Postgresql SELECT if string contains
...
A proper way to search for a substring is to use position function instead of like expression, which requires escaping %, _ and an escape character (\ by default):
SELECT id FROM TAG_TABLE WHERE position(tag_name in 'aaaaaaaaaaa')>0;
...
Efficient way to return a std::vector in c++
...
vector<string> getseq(char * db_file)
And if you want to print it on main() you should do it in a loop.
int main() {
vector<string> str_vec = getseq(argv[1]);
for(vector<string>::iterator it = str_vec.beg...
String vs. StringBuilder
I understand the difference between String and StringBuilder ( StringBuilder being mutable) but is there a large performance difference between the two?
...
How to convert an NSString into an NSNumber
How can I convert a NSString containing a number of any primitive data type (e.g. int , float , char , unsigned int , etc.)? The problem is, I don't know which number type the string will contain at runtime.
...
Should I inherit from std::exception?
...s no way to pass a message to std::exception. std::runtime_error accepts a string and is derived from std::exception.
– Martin York
Nov 3 '09 at 19:59
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