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Rails: Default sort order for a rails model?
...d be chained together but only resulting in 1 actual database query, to avoid performance problems from executing 7 separate queries.
You can use a passed in parameter such as a date or a user_id (something that will change at run-time and so will need that 'lazy evaluation', with a lambda, like th...
What does multicore assembly language look like?
... the HW thread and allows it to run SW. It is up to the OS and BIOS to decide which HW threads run, and which processes and SW threads run on each HW thread.
– Nathan Fellman
Jul 19 '14 at 20:24
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NHibernate ISession Flush: Where and when to use it, and why?
... transactions
Don't use Close(), instead wrap your calls on an ISession inside a using statement or manage the lifecycle of your ISession somewhere else.
From the documentation:
From time to time the ISession will execute the SQL statements needed to synchronize the ADO.NET connection's state with...
Does order of where clauses matter in SQL?
Let's say I have a table called PEOPLE having 3 columns ID, LastName, FirstName , none of these columns are indexed.
LastName is more unique, and FirstName is less unique.
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How do you get the footer to stay at the bottom of a Web page?
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The detailed explanation with the demo is provided in this site: CSS Sticky Footer
– mohitp
Mar 22 '13 at 9:15
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Accessing private member variables from prototype-defined functions
...o it. That would essentially be scoping in reverse.
Methods defined inside the constructor have access to private variables because all functions have access to the scope in which they were defined.
Methods defined on a prototype are not defined within the scope of the constructor, and will n...
Manual deployment vs. Amazon Elastic Beanstalk
...nd application server on the same machine/instance is not generally a good idea anyway.
In a PAAS system, the DBMS is a separate service. For Amazon, it would be Amazon RDS. Just like with Elastic Beanstalk, where you don't have to worry about the application server and you just upload your WAR fi...
Rebase a single Git commit
... cherry-pick XX to master.
git checkout master
git cherry-pick <commit ID of XX>
And remove the last commit from the feature branch with git reset.
git checkout Feature-branch
git reset --hard HEAD^
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How do I undo 'git add' before commit?
...ry) or ambiguous (because you created a branch called HEAD, which is a stupid thing that you shouldn't do). This was changed in Git 1.8.2, though, so in modern versions of Git you can use the commands above even prior to making your first commit:
"git reset" (without options or parameters) used to ...
What should I do if the current ASP.NET session is null?
...dy. If the client does not transport the session cookie, we have no way of identifying the client as the same, so he will be handed a new session again and again.
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