大约有 40,000 项符合查询结果(耗时:0.0368秒) [XML]

https://stackoverflow.com/ques... 

How to get the seconds since epoch from the time + date output of gmtime()?

...re two ways, depending on your original timestamp: mktime() and timegm() http://docs.python.org/library/time.html share | improve this answer | follow | ...
https://stackoverflow.com/ques... 

Css pseudo classes input:not(disabled)not:[type=“submit”]:focus

...ave mixed up/missing colons and parentheses on the :not() selector. Demo: http://jsfiddle.net/HSKPx/ One thing to note: I may be wrong, but I don't think disabled inputs can normally receive focus, so that part may be redundant. Alternatively, use :enabled input:enabled:not([type="submit"]):focu...
https://stackoverflow.com/ques... 

In log4j, does checking isDebugEnabled before logging improve performance?

...ava 8, you don't have to use isDebugEnabled() to improve the performance. https://logging.apache.org/log4j/2.0/manual/api.html#Java_8_lambda_support_for_lazy_logging import java.util.logging.Logger; ... Logger.getLogger("hello").info(() -> "Hello " + name); ...
https://stackoverflow.com/ques... 

Python: how to print range a-z?

... add a comment  |  48 ...
https://stackoverflow.com/ques... 

Change Active Menu Item on Page Scroll?

...  |  show 6 more comments 16 ...
https://stackoverflow.com/ques... 

curl_exec() always returns false

...ception('failed to initialize'); } curl_setopt($ch, CURLOPT_URL, 'http://example.com/'); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); curl_setopt(/* ... */); $content = curl_exec($ch); // Check the return value of curl_exec(), too if ($content === false) { thro...
https://stackoverflow.com/ques... 

Filtering collections in C#

...you and return a subset of the list. MSDN has a great code example here: http://msdn.microsoft.com/en-us/library/aa701359(VS.80).aspx EDIT: I wrote this before I had a good understanding of LINQ and the Where() method. If I were to write this today i would probably use the method Jorge mentions a...
https://stackoverflow.com/ques... 

ASP.NET 2.0 - How to use app_offline.htm

...4.x. Also note that when app_offline.htm is present, IIS will return this http status code: HTTP/1.1 503 Service Unavailable This is all by design. This allows your load balancer (or whatever) to see that the server is off line. ...
https://stackoverflow.com/ques... 

Parsing JSON using Json.net

...t; /// This class encodes and decodes JSON strings. /// Spec. details, see http://www.json.org/ /// /// JSON uses Arrays and Objects. These correspond here to the datatypes ArrayList and Hashtable. /// All numbers are parsed to doubles. /// </summary> using System; using System.Collect...
https://stackoverflow.com/ques... 

Can I have multiple Xcode versions installed?

...l downloaded versions, but it probably doesn't make a big difference. See http://developer.apple.com/documentation/Xcode/Conceptual/XcodeCoexistence/Contents/Resources/en.lproj/Details/Details.html this Apple Developer Connection page for lots of details. <- Page does not exist anymore! ...