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Which is faster in Python: x**.5 or math.sqrt(x)?
...l namespace speeds it up more is probably because of the method resolution order: the compiler first checks if the function was defined in your code, then in any imports, so if it was defined locally it takes less time per lookup
– Rotem Shalev
Aug 21 at 11:26
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PHP - how to best determine if the current invocation is from CLI or web server?
...er, you'll get apache2handler. Hope this helps. I needed to use php-cgi in order to introduce $_GET variables: php-cgi myscript.php arg1=one arg2=two. Testing for not equal to apache2handler should be ok for apache.
– Sebastian
Jun 12 '13 at 1:01
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What is the best method of handling currency/money?
...in Rails console, send a call to the ActiveSupport's NumberHelper class in order to access the helper.
For example:
ActiveSupport::NumberHelper.number_to_currency(2_500_000.61, unit: '€', precision: 2, separator: ',', delimiter: '', format: "%n%u")
gives the following output
2500000,61€
Check ...
How do I get a UTC Timestamp in JavaScript?
...should do the Math.floor / 1000 -- but still I would need that function in order to have the UTC timestamp of an existing date object... right?
– Merc
Mar 18 '12 at 5:22
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How to check whether an object is a date?
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In order to check if the value is a valid type of the standard JS-date object, you can make use of this predicate:
function isValidDate(date) {
return date && Object.prototype.toString.call(date) === "[object Date]" &...
Are there strongly-typed collections in Objective-C?
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There are no generics in Objective-C.
From the Docs
Arrays are ordered collections of objects. Cocoa provides several array classes, NSArray, NSMutableArray (a subclass of NSArray), and NSPointerArray.
share
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What are the most useful Intellij IDEA keyboard shortcuts? [closed]
...Intellij IDEA keyboard shortcuts I find most useful (listed in roughly the order of usage for me):
The shortcut I use the most is Ctrl + B (Go to declaration), to see what a method does, where a variable is declared etc. This is almost always followed by Ctrl + Alt + Left to get back to where I was...
What exactly is Python multiprocessing Module's .join() Method Doing?
...od.
and
Note It is important to join() the process after terminating it in order to give the background machinery time to update the status of the object to reflect the termination.
This is a good example helped me understand it: here
One thing I noticed personally was my main process paused until t...
How to check iOS version?
...mVersion];
if ([currSysVer compare:reqSysVer options:NSNumericSearch] != NSOrderedAscending) {
displayLinkSupported = TRUE;
}
If for whatever reason you decide that systemVersion is what you want, make sure to treat it as an string or you risk truncating the patch revision number (eg. 3.1.2 -&...
Guards vs. if-then-else vs. cases in Haskell
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This is just a matter of ordering but I think its very readable and has the same structure as guards.
nthElement :: [a] -> Int -> Maybe a
nthElement [] a = Nothing
nthElement (x:xs) a = if a < 1 then Nothing else
if ...