大约有 31,000 项符合查询结果（耗时：0.0654秒） [XML]
Sql Server equivalent of a COUNTIF aggregate function
...t COUNT!) combined with a CASE statement, like this:
SELECT SUM(CASE WHEN myColumn=1 THEN 1 ELSE 0 END)
FROM AD_CurrentView
Note: in my own test NULLs were not an issue, though this can be environment dependent. You could handle nulls such as:
SELECT SUM(CASE WHEN ISNULL(myColumn,0)=1 THEN 1 ELS...
Anything wrong with NOT signing a .NET assembly?
One of my colleagues is very keen on signing assemblies. He literally tries to sign anything. Even when we use assemblies from Microsoft that are not signed, he will take the source code, sign it and then ask other developers to use his copy instead.
...
jQuery: Get height of hidden element in jQuery
... though, forget position if it's already absolute:
var previousCss = $("#myDiv").attr("style");
$("#myDiv").css({
position: 'absolute', // Optional if #myDiv is already absolute
visibility: 'hidden',
display: 'block'
});
optionHeight = $("#myDiv").height();
$("#myDiv").attr("st...
When to use pip requirements file versus install_requires in setup.py?
...
My philosophy is that install_requires should indicate a minimum of what you need. It might include version requirements if you know that some versions will not work; but it shouldn't have version requirements where you aren...
Visual Studio: How do I show all classes inherited from a base class?
... find all extendings and implementations. For a type - derived types.
And my favorite feature - click with holding Control on any type/method for navigating to its declaration.
I think it's a must-have tool for .net developers.
In Resharper 9.2, on any type in source code, rt-click "Find Usage ...
How do I remove the “extended attributes” on a file in Mac OS X?
...
With Xcode installed on my 10.8.5 system, xattr -c works fine for me (and successfully stripped all metadata).
– Doktor J
Nov 20 '13 at 19:55
...
How do I start a program with arguments when debugging?
...fferent language (not the one you are used to work with), which is exactly my case and although I know the language, the translation is awful and even a native speaker can't deal with it properly. :D
– rbaleksandar
Feb 14 '13 at 9:03
...
Class JavaLaunchHelper is implemented in both … libinstrument.dylib. One of the two will be used. Wh
...X and started getting the following message on the console when launching my application using Eclipse. The app works fine but I would like to find out the cause of the problem and hopefully a fix for it.
...
Python subprocess.Popen “OSError: [Errno 12] Cannot allocate memory”
...y: github.com/SeanHayes/errand-boy I'm using it in production with one of my clients and our "Cannot allocate memory" troubles are gone.
– Seán Hayes
Sep 5 '14 at 16:19
...
What is the difference between a Docker image and a container?
...ckerfile the recipe, the image the mould, the container still being the yummy cake
– Julien
May 16 '18 at 13:53
|
show 6 more comments
...