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List of Big-O for PHP functions
...ght it'd be good idea to have it for reference somewhere. I've gone though and either via benchmark or code-skimming to characterize the array_* functions. I've tried to put the more interesting Big-O near the top. This list is not complete.
Note: All the Big-O where calculated assuming a hash look...
How to change maven logging level to display only warning and errors?
...o prevent maven from displaying INFO messages, I want to see only WARNINGS and ERRORS (if any).
10 Answers
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Remove ':hover' CSS behavior from element
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I would use two classes. Keep your test class and add a second class called testhover which you only add to those you want to hover - alongside the test class. This isn't directly what you asked but without more context it feels like the best solution and is possibly the...
Android - Emulator in landscape mode, screen does not rotate
When I switch to landscape mode ( NUMPAD 7 or CTRL + F11 ) the emulator rotates the screen to landscape orientation but the Android OS and none of the apps rotate. So everything is sitting sideways. Is there something in the AVD configuration that needs to be set in order for the device to rotate ...
Why does `a == b or c or d` always evaluate to True?
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In many cases, Python looks and behaves like natural English, but this is one case where that abstraction fails. People can use context clues to determine that "Jon" and "Inbar" are objects joined to the verb "equals", but the Python interpreter is more...
DISTINCT for only one column
...OM Products
WHERE ProductModel = 2
AND ProductName LIKE 'CYBER%'
) a
WHERE rn = 1
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How to run SQL script in MySQL?
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If you’re at the MySQL command line mysql> you have to declare the SQL file as source.
mysql> source \home\user\Desktop\test.sql;
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Operator precedence with Javascript Ternary operator
...ause> is assigned to <variable>, <false clause> is ignored, and the next statement is executed.
If <expression> evaluates to false, then <true clause> is ignored and the value of <false clause> is assigned to <variable>.
The important thing to realise with th...
Grep only the first match and stop
... you. btw - are all those other arguments necessary that I have in the command? and what if I can't pipe it by chance (just in case).
– Tim Kamm
Dec 30 '12 at 18:48
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Effect of NOLOCK hint in SELECT statements
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NOLOCK typically (depending on your DB engine) means give me your data, and I don't care what state it is in, and don't bother holding it still while you read from it. It is all at once faster, less resource-intensive, and very very dangerous.
You should be warned to never do an update from or ...