大约有 40,000 项符合查询结果（耗时：0.0321秒） [XML]
Remove duplicates in the list using linq
...de();
}
}
Then use it like this:
var distinctItems = items.Distinct(new DistinctItemComparer());
share
|
improve this answer
|
follow
|
...
Group by in LINQ
...ersons
group p.car by p.PersonId into g
select new { PersonId = g.Key, Cars = g.ToList() };
Or as a non-query expression:
var results = persons.GroupBy(
p => p.PersonId,
p => p.car,
(key, g) => new { PersonId = key, Cars = g.ToList() });
Basical...
Insert into a MySQL table or update if exists
...s. REPLACE INTO essentially deletes the row if it exists, and inserts the new row. In the example, if you did 'REPLACE INTO table (id, age) values (1, 19) then the name field would become null.
– Dale
Dec 8 '13 at 8:05
...
SELECT * FROM X WHERE id IN (…) with Dapper ORM
...= "SELECT * FROM SomeTable WHERE id IN @ids"
var results = conn.Query(sql, new { ids = new[] { 1, 2, 3, 4, 5 }});
share
|
improve this answer
|
follow
|
...
Calling a Fragment method from a parent Activity
...
OK that was easy, thanks (I'm brand new to fragments). Now the hard part is I can't seem to get a reference to the fragment in the first place. It's not defined in an XML layout, so I can't use findFragmentById(). And it's not clear to me from the code I'm f...
How to find a hash key containing a matching value
...
This is better than creating a whole new hash (by calling invert) just to find an item.
– Hejazi
Jan 25 '13 at 18:53
...
Is it possible to deserialize XML into List?
...lRoot("user_list")]
public class UserList
{
public UserList() {Items = new List<User>();}
[XmlElement("user")]
public List<User> Items {get;set;}
}
public class User
{
[XmlElement("id")]
public Int32 Id { get; set; }
[XmlElement("name")]
public String Name { ...
Javascript - remove an array item by value [duplicate]
... Not good to extend native JS objects. Plus, OP wants to return the new array with the element removed.. it would be nice to return the new array..
– Andre Figueiredo
Nov 19 '14 at 21:59
...
Rails: Using greater than/less than with a where statement
...do this with dates!
User.where(created_at: 3.days.ago..DateTime::Infinity.new)
will generate the SQL
SELECT `users`.* FROM `users` WHERE (`users`.`created_at` >= '2018-07-07 17:00:51')
Double Bonus
Once Ruby 2.6 is released (December 25, 2018) you'll be able to use the new infinite range s...
Can Selenium interact with an existing browser session?
...xecutor_url, session_id):
original_execute = WebDriver.execute
def new_command_execute(self, command, params=None):
if command == "newSession":
# Mock the response
return {'success': 0, 'value': None, 'sessionId': session_id}
else:
return o...