大约有 47,000 项符合查询结果(耗时:0.0708秒) [XML]
Entity Framework Timeouts
...known bug with specifying default command timeout within the EF connection string.
http://bugs.mysql.com/bug.php?id=56806
Remove the value from the connection string and set it on the data context object itself. This will work if you remove the conflicting value from the connection string.
Entity...
mongoDB/mongoose: unique if not null
...the sparse option to true when defining the index. As in:
email : {type: String, trim: true, index: true, unique: true, sparse: true}
Or in the shell:
db.users.ensureIndex({email: 1}, {unique: true, sparse: true});
Note that a unique, sparse index still does not allow multiple docs with an em...
Get the subdomain from a URL
...e('super.duper.domain.co.uk');
$result->getSubdomain(); // will return (string) 'super.duper'
$result->getSubdomains(); // will return (array) ['super', 'duper']
$result->getHostname(); // will return (string) 'domain'
$result->getSuffix(); // will return (string) 'co.uk'
...
How do I iterate through the files in a directory in Java?
...alled recursion.
Here's a basic kickoff example.
public static void main(String... args) {
File[] files = new File("C:/").listFiles();
showFiles(files);
}
public static void showFiles(File[] files) {
for (File file : files) {
if (file.isDirectory()) {
System.out.pr...
How to convert an IPv4 address into a integer in C#?
...pping:
using System;
using System.Net;
class App
{
static long ToInt(string addr)
{
// careful of sign extension: convert to uint first;
// unsigned NetworkToHostOrder ought to be provided.
return (long) (uint) IPAddress.NetworkToHostOrder(
(int) IPAddr...
How to save a Python interactive session?
...ntly using Python's interpreter to work with databases, files, etc -- basically a lot of manual formatting of semi-structured data. I don't properly save and clean up the useful bits as often as I would like. Is there a way to save my input into the shell (db connections, variable assignments, lit...
In C#, how to instantiate a passed generic type inside a method?
...
Declare your method like this:
public string InstantiateType<T>(string firstName, string lastName)
where T : IPerson, new()
Notice the additional constraint at the end. Then create a new instance in the method body:
T obj = new T();
...
What are libtool's .la file for?
...nly file that is preserved between platforms by libtool allowing to understand what happens with:
Library dependencies
Actual file names
Library version and revision
Without depending on a specific platform implementation of libraries.
...
What does in XML mean?
...DATA stands for Character Data and it means that the data in between these strings includes data that could be interpreted as XML markup, but should not be.
The key differences between CDATA and comments are:
As Richard points out, CDATA is still part of the document, while a comment is not.
In C...
Getting the HTTP Referrer in ASP.NET
... ViewState["PreviousPageUrl"] = Request.UrlReferrer.ToString();
– JonH
Sep 23 '15 at 16:52
...
