大约有 44,000 项符合查询结果（耗时：0.0497秒） [XML]
How to check if a file exists in the Documents directory in Swift?
...
Nowadays (2016) Apple recommends more and more to use the URL related API of NSURL, NSFileManager etc.
To get the documents directory in iOS and Swift 2 use
let documentDirectoryURL = try! NSFileManager.defaultManager().URL...
MySQL Workbench: How to keep the connection alive
...
From the now unavailable internet archive:
Go to Edit -> Preferences -> SQL Editor and set to a higher value this parameter: DBMS connection read time out (in seconds). For instance: 86400.
Close and reopen MySQL Workbe...
How can I access “static” class variables within class methods in Python?
... bar = 1
@classmethod
def bah(cls):
print cls.bar
Now if bah() has to be instance method (i.e. have access to self), you can still directly access the class variable.
class Foo(object):
bar = 1
def bah(self):
print self.bar
...
How do I delete a Git branch locally and remotely?
...ommand line (like above), then your local repository will still contain (a now obsolete) remote-tracking branch origin/X. This can happen if you deleted a remote branch directly through GitHub's web interface, for example.
A typical way to remove these obsolete remote-tracking branches (since Git v...
What are good alternatives to SQL (the language)? [closed]
...n or local methods in SQL. I looked up ScalaQuery from your post (which is now called Slick) and rewrote the entire system and every 6 queries become 1, just because you could encapsulate and have local methods! If anyone is suffering from SQL horrors, look up Scala Slick or Quill and prepare for en...
How to get the number of days of difference between two dates on mysql?
...-14 11:00:00');
returns 1
select timestampdiff(DAY, '2016-04-13 11:00:00', now()); returns how many full 24h days has passed since 2016-04-13 11:00:00 until now.
Hope it will help someone, because at first it isn't much obvious why datediff returns values which seems to be unexpected or wrong.
...
How to go to a specific element on page? [duplicate]
...
@Lior: Honestly, I do that now because I've always done it that way; I think the original reason for 'html,body' is to deal with browser differences.
– mu is too short
Oct 10 '13 at 18:30
...
How to force cp to overwrite without confirmation
...
yes, I did unalias cp -i , now its working.. Thank you for your valuable reply.
– thiyagu114
Dec 13 '11 at 11:43
6
...
git diff file against its last change
...possible to get git to produce a diff between a specific file as it exists now, and as it existed before the last commit that changed it?
...
Get URL query string parameters
...ameter of parse_str(). -- parse_str($_SERVER['QUERY_STRING'], $params); -- now $params array will contain all the query string values.
– Amal Murali
Oct 20 '13 at 5:24
13
...