大约有 46,000 项符合查询结果(耗时:0.0329秒) [XML]

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Right query to get the current number of connections in a PostgreSQL DB

...ence. Both queries are based on exactly the same data, so they will be equally accurate. share | improve this answer | follow | ...
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Could not open a connection to your authentication agent

...t?. Could not open a connection to your authentication agent To automatically start ssh-agent and allow a single instance to work in multiple console windows, see Start ssh-agent on login. Why do we need to use eval instead of just ssh-agent? To find out why, see Robin Green's answer. Public vs...
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What are best practices that you use when writing Objective-C and Cocoa? [closed]

...rogramming practices do you use when writing Objective-C, and more specifically when using Cocoa (or CocoaTouch). 33 Answer...
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mysql_config not found when installing mysqldb python interface

...the linux server I'm connected to via ssh. The script uses mysqldb. I have all the other components I need, but when I try to install mySQLdb via setuptools like so:, ...
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Sending files using POST with HttpURLConnection

...one can provide me with a good example on how to send a bitmap "file" (actually an in-memory stream) via POST to an Apache HTTP server. I'm not interested in cookies or authentication or anything complicated, but I just want to have a reliable and logic implementation. All the examples that I've see...
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Any way to clear python's IDLE window?

...you could put this in a function: def cls(): print ("\n" * 100) And then call it when needed as cls() share | improve this answer | follow | ...
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How to add leading zeros for for-loop in shell? [duplicate]

... that this feature got introduced with bash-4.0-alpha: Brace expansion now allows zero-padding of expanded numeric values and will add the proper number of zeroes to make sure all values contain he same number of digits.). – Adrian Frühwirth Feb 13 '15 at 18:5...
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How can I develop for iPhone using a Windows development machine?

...the old Dell Precision I had at the time :) There are three routes; Install OSx86 (aka iATKOS / Kalyway) on a second partition/disk and dual boot. Run Mac OS X Server under VMWare (Mac OS X 10.7 (Lion) onwards, read the update below). Use Delphi XE4 and the macincloud service. This is a commercia...
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How does this giant regex work?

I recently found the code below in one of my directories, in a file called doc.php . The file functions or links to a file manager. It's quite nicely done. Basically, it lists all the files in the current directory, and it lets you change directories. ...
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windows service vs scheduled task

...ust need to figure out how to support failover... Original Answer: I'm really not a fan of Windows Scheduler. The user's password must be provided as @moodforall points out above, which is fun when someone changes that user's password. The other major annoyance with Windows Scheduler is that it r...