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When do Java generics require
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First - I have to direct you to http://www.angelikalanger.com/GenericsFAQ/JavaGenericsFAQ.html -- she does an amazing job.
The basic idea is that you use
<T extends SomeClass>
when the actual parameter can be SomeClass or any subtype of it.
In yo...
How do I modify a MySQL column to allow NULL?
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CPU Privilege Rings: Why rings 1 and 2 aren't used?
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IIS: Idle Timeout vs Recycle
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Unknown Column In Where Clause
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See the following MySQL manual page: http://dev.mysql.com/doc/refman/5.0/en/select.html
"A select_expr can be given an alias
using AS alias_name. The alias is used
as the expression's column name and
can be used in GROUP BY, ORDER BY, or
HAVING claus...
SQL query to find record with ID not in another table
... pk do not exist in B.
Old but still gold, specific to PostgreSQL though: https://explainextended.com/2009/09/16/not-in-vs-not-exists-vs-left-join-is-null-postgresql/
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Pretty git branch graphs
...ks and articles have some really pretty looking graphs of git branches and commits. How can I make high-quality printable images of git history?
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How to prove that a problem is NP complete?
... to it in polynomial time which makes the problem NP-Hard.
See the end of http://www.ics.uci.edu/~eppstein/161/960312.html for more.
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Can I use my existing git repo with openshift?
...suing locally:
git merge openshift/master -s recursive -X ours
With this command you tell git to merge the master branch in the openshift git repo with your local git repo. You tell it to merge using the recursive merging strategy and to choose your ("ours") version when there are conflicts.
Once...
How can I sanitize user input with PHP?
...he only way to be guaranteed against SQL injection.
Please see my website http://bobby-tables.com/ for more about preventing SQL injection.
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