大约有 15,500 项符合查询结果（耗时：0.0254秒） [XML]
Create PostgreSQL ROLE (user) if it doesn't exist
... with correct exception and sqlstate propagation:
DO $$
BEGIN
CREATE ROLE test;
EXCEPTION WHEN duplicate_object THEN RAISE NOTICE '%, skipping', SQLERRM USING ERRCODE = SQLSTATE;
END
$$;
Test output (called two times via DO and then directly):
$ sudo -u postgres psql
psql (9.6.12)
Type "help" fo...
find filenames NOT ending in specific extensions on Unix?
...tr
total 10
-rw-r--r-- 1 scripter linuxdumb 47 Dec 23 14:46 test1
-rw-r--r-- 1 scripter linuxdumb 0 Jan 4 23:40 test4
-rw-r--r-- 1 scripter linuxdumb 0 Jan 4 23:40 test3
-rw-r--r-- 1 scripter linuxdumb 0 Jan 4 23:40 test2
-rw-r--r-- ...
test if event handler is bound to an element in jQuery [duplicate]
...ves itself, use the one() method. $("body").one("click",function(){ alert('test');});
– Daniel Katz
Sep 9 '14 at 11:58
|
show 2 more comment...
How do I get started with Node.js [closed]
...n for your text editor that will automatically run it on your code.
Unit Testing:
Mocha is a popular test framework.
Vows is a fantastic take on asynchronous testing, albeit somewhat stale.
Expresso is a more traditional unit testing framework.
node-unit is another relatively traditional unit te...
How can I tell if a DOM element is visible in the current viewport?
...most never precise. You can read more about its bugs.
This solution was tested on Internet Explorer 7 (and later), iOS 5 (and later) Safari, Android 2.0 (Eclair) and later, BlackBerry, Opera Mobile, and Internet Explorer Mobile 9.
function isElementInViewport (el) {
// Special bonus f...
PHP json_encode encoding numbers as strings
...
I've done a very quick test :
$a = array(
'id' => 152,
'another' => 'test',
'ananother' => 456,
);
$json = json_encode($a);
echo $json;
This seems to be like what you describe, if I'm not mistaken ?
And I'm getting as outpu...
How to remove all characters after a specific character in python?
...s 1.13 for .split (comment formatting doesn't really let me show the exact tests, but I'm using @Ayman's text and separator) -- so, +1 for @Ayman's answer!
– Alex Martelli
May 24 '09 at 22:15
...
What's the difference between utf8_general_ci and utf8_unicode_ci?
...ks myself.
I created a very simple table with 500,000 rows:
CREATE TABLE test(
ID INT(11) DEFAULT NULL,
Description VARCHAR(20) DEFAULT NULL
)
ENGINE = INNODB
CHARACTER SET utf8
COLLATE utf8_general_ci;
Then I filled it with random data by running this stored procedure:
CREATE PROCEDURE ran...
Container View Controller Examples [closed]
... autorelease];
// create test1 and test2 instance (subclass UIViewController and
// also need to define their own nibs)
vc1 = [[test1 alloc]initWithNibName:@"test1" bundle:nil];
vc2 = [[test2 alloc]initWithNibName:@"test2" bundle:nil];
...
using jquery $.ajax to call a PHP function
...ant is something like:
$.ajax({ url: '/my/site',
data: {action: 'test'},
type: 'post',
success: function(output) {
alert(output);
}
});
On the server side, the action POST parameter should be read and the corresponding value shoul...