大约有 47,000 项符合查询结果（耗时：0.0529秒） [XML]
How do you scroll up/down on the Linux console?
...
In order to prevent the Matthew Effect, from now on I will try to upvote the second and correct answer to encourage ppl to answer the questions who already have a correct answer.
– WesternGun
Dec 13 '17 at 9:11
...
“Java DateFormat is not threadsafe” what does this leads to?
...ct details of why DateFormat isn't thread-safe, but for me it's enough to know that it is unsafe without synchronization - the exact manners of non-safety could even change between releases.
Personally I would use the parsers from Joda Time instead, as they are thread safe - and Joda Time is a much...
How to urlencode data for curl command?
...cho the result (EASIER)... or both... :p
}
With the matching set, we can now perform some simple tests:
$ diff rawurlencode.inc.sh \
<( rawurldecode "$( rawurlencode "$( cat rawurlencode.inc.sh )" )" ) \
&& echo Matched
Output: Matched
And if you really really feel t...
Insert into … values ( SELECT … FROM … )
...
The documentation does list this (now?): this syntax is INSERT INTO ... VALUES ([expr], [expr], ...) and one of the paths in [expr] is {{NOT} EXISTS} ([select-stmt]) - note that the paranthesis around the select statement are required ({} meaning optional)
...
PHPDoc type hinting for array of objects?
...ariable declaration to hint at its type. Then an IDE, for ex. PHPEd, will know what type of object it's working with and will be able to provide a code insight for that variable.
...
UIView Infinite 360 degree rotation animation?
...de for iOS 3.0 and below but for newer programmers and new projects, Apple now warns users away from these methods in the Docs & @Nate code uses the block based animations that Apple now prefers
– PaulWoodIII
May 15 '13 at 4:46
...
Get data from JSON file with PHP [duplicate]
...ntents():
$str = file_get_contents('http://example.com/example.json/');
Now decode the JSON using json_decode():
$json = json_decode($str, true); // decode the JSON into an associative array
You have an associative array containing all the information. To figure out how to access the values yo...
Set cookie and get cookie with JavaScript [duplicate]
...ent.cookie = name +'=; Path=/; Expires=Thu, 01 Jan 1970 00:00:01 GMT;';
}
Now, calling functions
setCookie('ppkcookie','testcookie',7);
var x = getCookie('ppkcookie');
if (x) {
[do something with x]
}
Source - http://www.quirksmode.org/js/cookies.html
They updated the page today so everything...
Iterating through a JSON object
...nt:
from __future__ import print_function
for song in json_object:
# now song is a dictionary
for attribute, value in song.items():
print(attribute, value) # example usage
NB: You could use song.iteritems instead of song.items if in Python 2.
...
How do I set the time zone of MySQL?
... this answer.
To get the current timezone offset as TIME
SELECT TIMEDIFF(NOW(), UTC_TIMESTAMP);
It will return 02:00:00 if your timezone is +2:00.
To get the current UNIX timestamp:
SELECT UNIX_TIMESTAMP();
SELECT UNIX_TIMESTAMP(NOW());
To get the timestamp column as a UNIX timestamp
SELECT...