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How to use MySQL DECIMAL?
...E columns are not the same as DECIMAL columns, and you will get in trouble if you use DOUBLE columns for financial data.
DOUBLE is actually just a double precision (64 bit instead of 32 bit) version of FLOAT. Floating point numbers are approximate representations of real numbers and they are not ex...
What is [Serializable] and when should I use it?
...in memory. Because the .Net Framework takes care of that for you. However, if you want to store the contents of an object to a file, send an object to another process or transmit it across the network, you do have to think about how the object is represented because you will need to convert to a dif...
DISTINCT for only one column
...
If you are using SQL Server 2005 or above use this:
SELECT *
FROM (
SELECT ID,
Email,
ProductName,
ProductModel,
...
Find lines from a file which are not present in another file [duplicate]
...
The command you have to use is not diff but comm
comm -23 a.txt b.txt
By default, comm outputs 3 columns: left-only, right-only, both. The -1, -2 and -3 switches suppress these columns.
So, -23 hides the right-only and both columns, showing the lines that a...
Lightweight Java Object cache API [closed]
...r code samples for an example of creating an in memory cache. You can specify a max size, and a time to live.
EHCache does offer some advanced features, but if your not interested in using them - don't. But it's nice to know they are there if your requirements ever change.
Here is an in memory c...
Folder is locked and I can't unlock it
...tory and cleanup any incomplete actions, remove the local locks (which is different from using Subversion locking of a file in the repository which lets everyone know about the lock).
If that doesn't work, see if you can find the names of the files that were changed, but not yet committed, save the...
Is there a naming convention for git repositories?
...ncatenated words are hard to understand. I know, I'm German. "Donaudampfschifffahrtskapitänspatentausfüllungsassistentenausschreibungsstellenbewerbung."
"_" is harder to type than "-"
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Hibernate: Automatically creating/updating the db tables based on entity classes
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I don't know if leaving hibernate off the front makes a difference.
The reference suggests it should be hibernate.hbm2ddl.auto
A value of create will create your tables at sessionFactory creation, and leave them intact.
A value of crea...
HTTP response code for POST when resource already exists
...at client side, complete with object IDs that are permanent for the whole lifetime of the object.
16 Answers
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What is the difference between the OAuth Authorization Code and Implicit workflows? When to use each
...rity consideration of implicit flow is that access_code should have short life so it can't be used on server to server. OK, but the refresh token solve this problem. Why we should use an auth_code flow and request access_token by that on server to obtain access_code?
– Mohammad...