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Best practices for SQL varchar column length [closed]
...t into it, not the max length you define. So from a storage point of view (and most probably a performance one as well), it does not make any difference whether you declare a column as VARCHAR(100) or VARCHAR(500).
You should see the max length provided for a VARCHAR column as a kind of constraint...
WPF Data Binding and Validation Rules Best Practices
...plex.com), which includes a demo of best practices validation in WPF+MVVM, and uses IDataErrorInfo
– Mark Heath
Sep 4 '09 at 6:37
3
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MySQL “between” clause not inclusive?
...t out:
select * from person
where CAST(dob AS DATE) between '2011-01-01' and '2011-01-31'
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Ways to synchronize interface and implementation comments in C# [closed]
Are there automatic ways to sync comments between an interface and its implementation?
I'm currently documenting them both and wouldn't like to manually keep them in sync.
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Decompile .smali files on an APK [duplicate]
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No, APK Manager decompiles the .dex file into .smali and binary .xml to human readable xml.
The sequence (based on APK Manager 4.9) is 22 to select the package, and then 9 to decompile it. If you press 1 instead of 9, then you will just unpack it (useful only if you want to e...
Does using final for variables in Java improve garbage collection?
Today my colleagues and me have a discussion about the usage of the final keyword in Java to improve the garbage collection.
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What is the most efficient/elegant way to parse a flat table into a tree?
..., we can say that all popular SQL databases support recursive queries in standard syntax.
WITH RECURSIVE MyTree AS (
SELECT * FROM MyTable WHERE ParentId IS NULL
UNION ALL
SELECT m.* FROM MyTABLE AS m JOIN MyTree AS t ON m.ParentId = t.Id
)
SELECT * FROM MyTree;
I tested recursive que...
What's the difference between SoftReference and WeakReference in Java?
What's the difference between java.lang.ref.WeakReference and java.lang.ref.SoftReference ?
12 Answers
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Typedef function pointer?
I'm learning how to dynamically load DLL's but what I don't understand is this line
6 Answers
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Any implementation of Ordered Set in Java?
...Objective-C there is a collection called NSOrderedSet that acts as Set and its items can be accessed as an Array 's ones.
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