大约有 44,000 项符合查询结果(耗时:0.0205秒) [XML]

https://stackoverflow.com/ques... 

Fastest way to count exact number of rows in a very large table?

...nly speculate. Does the db maintenance process find out that there are 42,123,876 rows in table A and then create 42,123,876 empty rows in table B, and then loop through table A and update the rows in table B...? Or is it crazier than that? ;-) – Tony Andrews ...
https://stackoverflow.com/ques... 

How to calculate dp from pixels in android programmatically [duplicate]

....applyDimension(TypedValue.COMPLEX_UNIT_DIP, (float) 123.4, getResources().getDisplayMetrics()); share | improve this answer | follow | ...
https://stackoverflow.com/ques... 

Show hidden div on ng-click within ng-repeat

...hide the first div when I click on second div. – User123 Oct 12 '16 at 7:41 To answer the Q above... Just change the n...
https://stackoverflow.com/ques... 

Creating PHP class instance with a string

...ther cool stuff you can do in php are: Variable variables: $personCount = 123; $varname = 'personCount'; echo $$varname; // echo's 123 And variable functions & methods. $func = 'my_function'; $func('param1'); // calls my_function('param1'); $method = 'doStuff'; $object = new MyClass(); $obj...
https://stackoverflow.com/ques... 

Ruby replace string with captured regex pattern

...note that you can index a string with a regex: "foo"[/oo/] #=> "oo" "Z_123: foobar"[/^Z_.*(?=:)/] #=> "Z_123" share | improve this answer | follow | ...
https://stackoverflow.com/ques... 

How to format time since xxx e.g. “4 minutes ago” similar to Stack Exchange sites

... 123 Might be an overkill in this case, but if the opportunity shows moment.js is just awesome! Mo...
https://stackoverflow.com/ques... 

How to add and get Header values in WebApi

...oducts/10', type: 'GET', headers: { 'username': 'test','password':'123' }, success: function (data) { alert(data); }, failure: function (result) { alert('Error: ' + result); } }); Hope this helps someone ... ...
https://stackoverflow.com/ques... 

Django MEDIA_URL and MEDIA_ROOT

... Worked for me on 1.10 too. – CoderGuy123 Aug 17 '16 at 22:42 does not work for me. Perhaps there are a...
https://stackoverflow.com/ques... 

How to round a number to n decimal places in Java

...f.setRoundingMode(RoundingMode.CEILING); for (Number n : Arrays.asList(12, 123.12345, 0.23, 0.1, 2341234.212431324)) { Double d = n.doubleValue(); System.out.println(df.format(d)); } gives the output: 12 123.1235 0.23 0.1 2341234.2125 EDIT: The original answer does not address the acc...
https://stackoverflow.com/ques... 

how do i do an insert with DATETIME now inside of SQL server mgmt studio

... Craig StuntzCraig Stuntz 123k1212 gold badges244244 silver badges266266 bronze badges ...