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How to show current time in JavaScript in the format HH:MM:SS?
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Thank you remus. I will never again fall down the inglorious rabbit hole of js datetime manipulations.
– matlembo
Jul 29 '15 at 20:42
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Install .ipa to iPad with or without iTunes
... I installed Windows 7 in VirtualBox, installed iTunes version 12. Then downloaded the ipa file (in my case an old version of VLC) and dropped it on iTunes. Then to sync I had to drag and drop the app icon to my device (an old iPad) listed in my iTunes in my virtual Windows 7. Worked!! Thanks.
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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...
Adding the little arrow to the right side of a cell in an iPhone TableView Cell
...lick that Prototype Cell and on the right look for Accessory. In the drop-down, click Disclosure Indicator.
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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:
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How to create Gmail filter searching for text only at start of subject line?
...inal is on archive.org dated 2012, now you just get redirected to a dumbed down page telling you how to give feedback. Lack of SIEVE support was covered in answer 78761 Does Gmail support all IMAP features?, since some time in 2015 that answer silently redirects to the answer about IMAP client confi...
Tainted canvases may not be exported
... images in dropbox's public folder and also set the cross origin flag when downloading the image (var img=new Image(); img.crossOrigin="anonymous" ...)
Install a webserver on your development computer (IIS and PHP web servers both have free editions that work nicely on a local computer).
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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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