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Underscore: sortBy() based on multiple attributes
... the array multiple times (which, on a large enough list could slow things down a lot) or they generate huge amounts of garbage objects that the VM will need to cleanup (and ultimately slowing the program down).
Here's a solution that is fast, efficient, easily allows reverse sorting, and can be u...
Why do we check up to the square root of a prime number to determine if it is prime?
... 10, the other is less than 10.
Thinking about a x b, if one of them goes down, the other must get bigger to compensate, so the product stays at 100. They pivot around the square root.
The square root of 101 is about 10.049875621. So if you're testing the number 101 for primality, you only need to...
How to properly ignore exceptions
...ymond Hettinger, talking about this and all sorts of other Python hotness: https://youtu.be/OSGv2VnC0go?t=43m23s
My addition to this is the Python 2.7 equivalent:
from contextlib import contextmanager
@contextmanager
def ignored(*exceptions):
try:
yield
except exceptions:
...
Could not find stored procedure 'dbo.aspnet_CheckSchemaVersion'
...on't believe you can use the tool against a remote database if it's locked down. So you'll have to export the scripts and run them manually)
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Why create “Implicitly Unwrapped Optionals”, since that implies you know there's a value?
...amation mark after the optional’s type when you declare it.
This comes down to use cases where the non-nil-ness of properties is established via usage convention, and can not be enforced by compiler during the class initialization. For example, the UIViewController properties that are initialize...
Java concurrency: Countdown latch vs Cyclic barrier
...n be used again.
For simple use cases - services starting etc... a CountdownLatch is fine. A CyclicBarrier is useful for more complex co-ordination tasks. An example of such a thing would be parallel computation - where multiple subtasks are involved in the computation - kind of like MapReduce....
How to detect if a function is called as constructor?
...nswered Dec 10 '09 at 12:38
Tim DownTim Down
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preventDefault() on an tag
I have some HTML and jQuery that slides a div up and down to show or hide` it when a link is clicked:
11 Answers
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How do I specify different layouts for portrait and landscape orientations?
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@itsaboutcode Yes it does: Go down to "Using configuration qualifiers"
– Danation
Nov 2 '12 at 18:11
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What is the command to truncate a SQL Server log file?
...ALTER DATABASE ExampleDB SET RECOVERY FULL
This reduced my 14GB log file down to 1MB.
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