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What are best practices for validating email addresses on iOS 2.0
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Great but doesn't work on OS <3.0, because NSPredicate is not available.
– Felixyz
Oct 13 '09 at 12:58
4
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How do I declare and assign a variable on a single line in SQL
...char(max) = 'Man''s best friend';
You will note that the ' is escaped by doubling it to ''.
Since the string delimiter is ' and not ", there is no need to escape ":
DECLARE @var nvarchar(max) = '"My Name is Luca" is a great song';
The second example in the MSDN page on DECLARE shows the correc...
Practical usage of setjmp and longjmp in C
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Error handling
Suppose there is an error deep down in a function nested in many other functions and error handling makes sense only in the top level function.
It would be very tedious and awkward if all the functions in between had to return normally and evaluate return...
What algorithms compute directions from point A to point B on a map?
How do map providers (such as Google or Yahoo! Maps) suggest directions?
18 Answers
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How to dynamically create generic C# object using reflection? [duplicate]
...Activator.CreateInstance(makeme);
Per your edit: For that case, you can do this ...
var d1 = Type.GetType("GenericTest.TaskA`1"); // GenericTest was my namespace, add yours
Type[] typeArgs = { typeof(Item) };
var makeme = d1.MakeGenericType(typeArgs);
object o = Activator.CreateInstance(makeme);...
How do I remove a property from a JavaScript object?
....log(obj.hasOwnProperty('myProperty')) // false
The delete operator does not directly free memory, and it differs from simply assigning the value of null or undefined to a property, in that the property itself is removed from the object. Note that if the value of a deleted property was a refe...
What .NET collection provides the fastest search
...? In otherwords, is the default Contains() method just scan each item or does it use a better search algorithm.
8 Answers...
How to edit data in result grid in SQL Server Management Studio
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You can do something similar to what you want. Right click on a table and select "edit top 200 rows" (if you are on SQL Server 2008) or "open table" in SQL Server 2005. Once you get there, there is a button on the top that says "SQL"...
Get records with max value for each group of grouped SQL results
How do you get the rows that contain the max value for each grouped set?
17 Answers
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Popup弹出菜单扩展 · App Inventor 2 中文网
...e.ullisroboterseite.ursai2popup.aix
示例应用: PopupExample.aia
dropdown_ursai2popup.aia
开发动机
MIT App Inventor包含从列表中选择组件，例如ListView组件。不幸的是，它总是填满整个屏幕，而且配置视图的选项很少。这里介绍...