大约有 35,100 项符合查询结果（耗时：0.0642秒） [XML]
Inserting multiple rows in a single SQL query? [duplicate]
...S
( Value1, Value2 ), ( Value1, Value2 )
For reference to this have a look at MOC Course 2778A - Writing SQL Queries in SQL Server 2008.
For example:
INSERT INTO MyTable
( Column1, Column2, Column3 )
VALUES
('John', 123, 'Lloyds Office'),
('Jane', 124, 'Lloyds Office'),
('Billy', 125, ...
How to calculate an angle from three points? [closed]
...the angle that P1 is the vertex of then using the Law of Cosines should work:
arccos((P122
+ P132 - P232) / (2 *
P12 * P13))
where P12 is the length of the segment from P1 to P2, calculated by
sqrt((P1x -
P2x)2 +
(P1y -
P2y)2)
...
How to convert a JSON string to a Map with Jackson JSON
I'm trying to do something like this but it doesn't work:
10 Answers
10
...
Dealing with commas in a CSV file
I am looking for suggestions on how to handle a csv file that is being created, then uploaded by our customers, and that may have a comma in a value, like a company name.
...
What does “=>” mean in PHP?
...or associative arrays. In the context of that foreach loop, it assigns the key of the array to $user and the value to $pass.
Example:
$user_list = array(
'dave' => 'apassword',
'steve' => 'secr3t'
);
foreach ($user_list as $user => $pass) {
echo "{$user}'s pass is: {$pass}\n"...
No empty constructor when create a service
...
You need to add an empty constructor to your class i.e. one that takes no arguments:
public ReminderService() {
super("ReminderService");
}
Explanation from the documentation:
The name is used to name the worker thread.
NOTE: this is only applicable to intent service.
...
Java 8 Streams - collect vs reduce
...ifferent parts of the stream are then added together.
The document you linked gives the reason for having two different approaches:
If we wanted to take a stream of strings and concatenate them into a
single long string, we could achieve this with ordinary reduction:
String concatenated = s...
How can I get the current user directory?
...
May be this will be a good solution: taking in account whether this is Vista/Win7 or XP and without using environment variables:
string path = Directory.GetParent(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData)).FullName;
if ( Environment.OSV...
JUnit 4 compare Sets
...
You can assert that the two Sets are equal to one another, which invokes the Set equals() method.
public class SimpleTest {
private Set<String> setA;
private Set<String> setB;
@Before
public void setUp() {
setA = new HashSet<String>();
setA....
Adding a simple UIAlertView
What is some starter code I could use to make a simple UIAlertView with one "OK" button on it?
10 Answers
...