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从网购到火车票，对比淘宝12306网为何如此烂？ - 大数据 & AI - 清泛网 - ...
...能做妥协;但订火车票，库存信息必须是实时的。铁道部2012年春运每天安排大约2000对列车，座位大概400万个，因为每个座位都可能有不同的购票方式(火车票代售点、电话订票等)，所以都需要计算，提前10天预售，应该有点类似...
Visual Studio: Is there a way to collapse all items of Solution Explorer?
... It should be mentioned that this is not default VS functionality (pre 2012), but, in this instance, the additional context menu item and shortcut is provided by Resharper.
– kodjeff1
Jul 30 '13 at 18:36
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AppSettings get value from .config file
...");
string value = ConfigurationManager.AppSettings["NewKey0"];
Using VS2012 .net 4
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How to check date of last change in stored procedure or function in SQL server
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In latest version(2012 or more) we can get modified stored procedure detail by using this query
SELECT create_date, modify_date, name FROM sys.procedures
ORDER BY modify_date DESC
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How do I check if a file exists in Java?
...s() (from my small benchmark on the only computer I tested: Windows Server 2012 running Java 1.7.0_45 x64).
– Matthieu
May 16 '17 at 16:53
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How to change background color in android app
...ngs.xml
<color name="white">#FFFFFF</color>
Edit : 18th Nov 2012
The first two letters of an 8 letter color code provide the alpha value, if you are using the html 6 letter color notation the color is opaque.
Eg :
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How to stop Visual Studio from “always” checking out solution files?
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still the same in 2012
– BlackICE
Apr 12 '13 at 13:23
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How to create composite primary key in SQL Server 2008
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For MSSQL Server 2012
CREATE TABLE usrgroup(
usr_id int FOREIGN KEY REFERENCES users(id),
grp_id int FOREIGN KEY REFERENCES groups(id),
PRIMARY KEY (usr_id, grp_id)
)
UPDATE
I should add !
If you want to add foreign / primary keys...
Visual Studio: ContextSwitchDeadlock
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Many of the more recent versions of Visual Studio (2012, 2010, 2008) and possibly some earlier ones, allow one to choose the primary use of Visual Studio when it is first run after installation. That choice determines the default layout of toolbars, including which controls ...
How do I toggle an element's class in pure JavaScript?
...ses don't appear underneath the window object. Only IDs do. See 2ality.com/2012/08/ids-are-global.html
– mikemaccana
Mar 13 '15 at 11:44
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