大约有 40,000 项符合查询结果(耗时:0.0574秒) [XML]

https://stackoverflow.com/ques... 

Removing elements by class name?

... If you prefer not to use JQuery: function removeElementsByClass(className){ var elements = document.getElementsByClassName(className); while(elements.length > 0){ elements[0].parentNode.removeChild(elements[0]); } } ...
https://stackoverflow.com/ques... 

What's the difference between libev and libevent?

...d didn't cope well with time jumps. Libev tried to improve each of these, by not using global variables but using a loop context for all functions, by using small watchers for each event type (an I/O watcher uses 56 bytes on x86_64 compared to 136 for libevent), allowing extra event types such as t...
https://stackoverflow.com/ques... 

'git add --patch' to include new files?

... In summary, git add -N someNewFile.txt followed by git add -p – CatShoes Oct 8 '16 at 3:36 1 ...
https://stackoverflow.com/ques... 

Most underused data visualization [closed]

...data. Heat maps can be useful for this. One really neat one was featured by David Smith on the Revolutions blog. Here is the ggplot code courtesy of Hadley: stock <- "MSFT" start.date <- "2006-01-12" end.date <- Sys.Date() quote <- paste("http://ichart.finance.yahoo.com/table.csv?s="...
https://stackoverflow.com/ques... 

Aggregate function in an SQL update query?

...INNER JOIN (select field3, sum(field2) as field2Sum from table2 group by field3) as t2 on t2.field3 = t1.field3 share | improve this answer | follow | ...
https://stackoverflow.com/ques... 

How can I negate the return-value of a process?

... not command The '!' operator, whether built-in to your shell or provided by the o/s, is not universally available. It isn't dreadfully hard to write, though - the code below dates back to at least 1991 (though I think I wrote a previous version even longer ago). I don't tend to use this in my sc...
https://stackoverflow.com/ques... 

Create UIActionSheet 'otherButtons' by passing in array, not varlist

... imageUploader: { brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454...
https://stackoverflow.com/ques... 

Why does C++ require a user-provided default constructor to default-construct a const object?

...idered a defect (against all versions of the standard) and it was resolved by Core Working Group (CWG) Defect 253. The new wording for the standard states in http://eel.is/c++draft/dcl.init#7 A class type T is const-default-constructible if default-initialization of T would invoke a user-provi...
https://stackoverflow.com/ques... 

When is a language considered a scripting language? [closed]

...n called a "scripting language". Maybe because the hidden compilation into bytecode of the reference CPython impl. doesn't raise compilation errors regarding "type safety"? Maybe Oded's answer has these... – n611x007 Jun 29 '12 at 6:34 ...
https://stackoverflow.com/ques... 

Grasping the Node JS alternative to multithreading

...ample if you do a non-blocking file system read this is likely implemented by telling a thread from the thread pool to perform a read and set a callback when it's done which means that the read could be happening on a different thread/core while the main node.js program is doing something else. But...