大约有 12,000 项符合查询结果（耗时：0.0362秒） [XML]
What is the difference between JOIN and UNION?
...example of JOIN:
mysql> SELECT * FROM
-> (SELECT 23 AS bah) AS foo
-> JOIN
-> (SELECT 45 AS bah) AS bar
-> ON (33=33);
+-----+-----+
| foo | bar |
+-----+-----+
| 23 | 45 |
+-----+-----+
1 row in set (0.01 sec)
...
Convert string to title case with JavaScript
...s my version, IMO it's easy to understand and elegant too.
var str = "foo bar baz"
console.log(
str.split(' ')
.map(w => w[0].toUpperCase() + w.substr(1).toLowerCase())
.join(' ')
)
// returns "Foo Bar Baz"
...
Are there strongly-typed collections in Objective-C?
...s in your generic ObjC class. If you specify constraints, e.g. MyClass <Foo: id<Bar>>, your Swift code will assume values are the type of your constraint, which gives you something to work with. However, specialized subclasses of MyClass would have their specialized types ignored (be se...
How to change identity column values programmatically?
... PRIMARY KEY,
X VARCHAR(10)
)
INSERT INTO Test
OUTPUT INSERTED.*
SELECT 'Foo' UNION ALL
SELECT 'Bar' UNION ALL
SELECT 'Baz'
Then you can do
/*Define table with same structure but no IDENTITY*/
CREATE TABLE Temp
(
ID INT PRIMARY KEY,
X VARCHAR(10)
)
/*Switch table metadata to new structure*/
AL...
Setting Curl's Timeout in PHP
...elf causing a 10-second delay so you can test timeouts:
if (!isset($_GET['foo'])) {
// Client
$ch = curl_init('http://localhost/test/test_timeout.php?foo=bar');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_NOSIGNAL, 1);
curl_setopt($ch, CURLOPT_TIMEOU...
Bash command to sum a column of numbers [duplicate]
...olumn 2 indexed from zero): perl -nle '$s += (split)[2]; END { print $s }' foo.txt or using pipes: cat foo.txt | perl -nle '$s += (split)[2]; END { print $s }'.
– Ben
May 14 '14 at 13:17
...
jQuery ID starts with
...e you go:
$('td[id^="' + value +'"]')
so if the value is for instance 'foo', then the selector will be 'td[id^="foo"]'.
Note that the quotes are mandatory: [id^="...."].
Source: http://api.jquery.com/attribute-starts-with-selector/
...
Convert interface{} to int
...e type conversion, look at the code below:
package main
import "fmt"
func foo(a interface{}) {
fmt.Println(a.(int)) // conversion of interface into int
}
func main() {
var a int = 10
foo(a)
}
This code executes perfectly and converts interface type to int type
For an expression x...
TypeScript Objects as Dictionary types as in C#
...versions you can use:
var map: { [email: string]: Customer; } = { };
map['foo@gmail.com'] = new Customer(); // OK
map[14] = new Customer(); // Not OK, 14 is not a string
map['bar@hotmail.com'] = 'x'; // Not OK, 'x' is not a customer
You can also make an interface if you don't want to type that wh...
How does the keyword “use” work in PHP and can I import classes with it?
...t;baz;
}
}
class Cls {
use Stuff; // import traits like this
}
$foo = new Cls;
echo $foo->bar(); // spits out 'baz'
share
|
improve this answer
|
follow
...