大约有 6,000 项符合查询结果(耗时:0.0201秒) [XML]

https://stackoverflow.com/ques... 

MySQL error 2006: mysql server has gone away

...y be easier to check if the connection and re-establish it if needed. See PHP:mysqli_ping for info on that. share | improve this answer | follow | ...
https://stackoverflow.com/ques... 

What is Rack middleware?

...mment about it being a way to filter requests probably comes from the RailsCast episode 151: Rack Middleware screen cast. Rack middleware evolved out of Rack and there is a great intro at Introduction to Rack middleware. There's an intro to middleware on Wikipedia here. ...
https://stackoverflow.com/ques... 

'0000-00-00 00:00:00' can not be represented as java.sql.Timestamp error

...er languages. So, if I "just change the database", thousands of lines of PHP code will break. Java programmers need to accept the MySQL zero-date and they need to put a zero date back into the database, when other languages rely on this "feature". A programmer connecting to MySQL needs to handle...
https://stackoverflow.com/ques... 

Is PowerShell ready to replace my Cygwin shell on Windows? [closed]

...t when you want a property, you ask for it - you don't have to parse,guess,cast. I did not understand your point about "what happens when objects don't have compatible methods" - Could you say that another way or give an example of the problem? Thanks. – Jeffrey Snover - MSFT ...
https://stackoverflow.com/ques... 

jQuery, simple polling example

... function poll(){ $("ajax.php", function(data){ //do stuff }); } setInterval(function(){ poll(); }, 5000); share | improve this answ...
https://stackoverflow.com/ques... 

Shortcut to exit scale mode in VirtualBox [closed]

...rked like a charm for me. Source: https://forums.virtualbox.org/viewtopic.php?f=8&t=47821 share | improve this answer | follow | ...
https://stackoverflow.com/ques... 

In C#, why is String a reference type that behaves like a value type?

... Not only strings are immutable reference types. Multi-cast delegates too. That is why it is safe to write protected void OnMyEventHandler() { delegate handler = this.MyEventHandler; if (null != handler) { handler(this, new EventArgs()); } } I suppo...
https://stackoverflow.com/ques... 

Replace transparency in PNG images with white background

...do not forget to do backup. More info here: imagemagick.org/script/mogrify.php – tro Jun 22 '17 at 17:28  |  show 4 more comments ...
https://stackoverflow.com/ques... 

What exactly do “IB” and “UB” mean?

...by the compiler writers. An example of this is the result of a reinterpret_cast. usually, it simply changes the type of a pointer, without modifying the address, but the mapping is actually implementation-defined, so a compiler could map to a completely different address, as long as it documented th...
https://stackoverflow.com/ques... 

Smooth scroll to div id jQuery

... You need to animate the html, body DEMO http://jsfiddle.net/kevinPHPkevin/8tLdq/1/ $("#button").click(function() { $('html, body').animate({ scrollTop: $("#myDiv").offset().top }, 2000); }); share...