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How to debug PDO database queries?
... Update: Aaron Patterson mentioned at Railsconf 2011 that he added more prepared statements to Rails, but that the benefit is much heavier in PostgreSQL than in MySQL. He said that this is because MySQL doesn't actually create the query plan until you execute the prepared query.
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Renaming a branch in GitHub
...lete the old one on GitHub and re-push, though the commands used are a bit more verbose than necessary:
git push origin :name_of_the_old_branch_on_github
git push origin new_name_of_the_branch_that_is_local
Dissecting the commands a bit, the git push command is essentially:
git push <remote> ...
Why do we check up to the square root of a prime number to determine if it is prime?
...it doesn't hurt (except for sometimes an additional division) to check one more divisor, you can just calculate ceil(sqrt(n)).
– gnasher729
Aug 3 at 9:28
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How can I change my default database in SQL Server without using MS SQL Server Management Studio?
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Several ports (8005, 8080, 8009) required by Tomcat Server at localhost are already in use
...nstance to listen on different ports. Consult the Tomcat documentation for more detail.
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How can I override the OnBeforeUnload dialog and replace it with my own?
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How do I add a new sourceset to Gradle?
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What is a C++ delegate?
...t(double)> f = [can be set to about anything in this answer]
// Usually more useful as a parameter to another functions
Option 6: binding (using std::bind)
Allows setting some parameters in advance, convenient to call a member function for instance.
struct MyClass
{
int DoStuff(double d...
Retrieving the COM class factory for component with CLSID {XXXX} failed due to the following error:
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You deserve more than a +1 but +1 is all I have to give
– David
Dec 5 '13 at 14:59
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Python exit commands - why so many and when should each be used?
...mation on them:
quit() simply raises the SystemExit exception.
Furthermore, if you print it, it will give a message:
>>> print (quit)
Use quit() or Ctrl-Z plus Return to exit
>>>
This functionality was included to help people who do not know Python. After all, one of the m...