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What are naming conventions for MongoDB?
...o name a collection few precautions to be taken :
A collection with empty string (“”) is not a valid collection name.
A collection name should not contain the null character because this defines the end of collection name.
Collection name should not start with the prefix “system.” as this i...
汇编语言超浓缩教程（汇编入门必备） - C/C++ - 清泛网 - 专注C/C++及内核技术
...段寄存器；ＳＳ（Stack Segment）：堆栈段寄存器；ＥＳ（Extra Segment）：附加段寄存器。当一个程序要执行时，就要决定程序代码、数据和堆栈各要用到内存的哪些位置，通过设定段寄存器 CS，DS，SS 来指向这些起始位置。通常是...
How does MongoDB sort records when no sort order is specified?
...natural order) is an undefined implementation detail. Maintaining order is extra overhead for storage engines and MongoDB's API does not mandate predictability outside of an explicit sort() or the special case of fixed-sized capped collections which have associated usage restrictions. For typical wo...
What happens to an open file handle on Linux if the pointed file gets moved or deleted
...ntl.h>
#include <stdlib.h>
#include <unistd.h>
#include <strings.h>
#include <stdio.h>
void perror_and_exit() {
perror(NULL);
exit(1);
}
int main(int argc, char *argv[]) {
int fd;
if ((fd = open("data", O_RDONLY)) == -1) {
perror_and_exit();
}
char buf[5]...
Sending multipart/formdata with jQuery.ajax
...g jQuery not to add a Content-Type header for you, otherwise, the boundary string will be missing from it.
Also, you must leave the processData flag set to false, otherwise, jQuery will try to convert your FormData into a string, which will fail.
You may now retrieve the file in PHP using:
$_FILES...
How to sort in mongoose?
... mongoose 3 you can't use Array for field selection anymore - it has to be String or Object
– pkyeck
Oct 14 '12 at 7:30
4
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Can Selenium interact with an existing browser session?
...r : RemoteWebDriver
{
public static bool newSession;
public static string capPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "TestFiles", "tmp", "sessionCap");
public static string sessiodIdPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "TestFiles", "tmp", "session...
Adding Core Data to existing iPhone project
...h the applicationDoumentsDirectory method should return NSURL instead of NSString.
– NSRover
May 9 '14 at 12:29
9
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Connect Java to a MySQL database
... Create a simple Java class with a main() method to test the connection.
String url = "jdbc:mysql://localhost:3306/javabase";
String username = "java";
String password = "password";
System.out.println("Connecting database...");
try (Connection connection = DriverManager.getConnection(url, userna...
Unexpected character encountered while parsing value
...
It looks like from File.WriteAllText(tmpfile,... that type of tmpfile is string that contain path to a file. JsonConvert.DeserializeObject takes JSON value, not file path - so it fails trying to convert something like @"c:\temp\fooo" - which is clearly not JSON.
...