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In JavaScript, why is “0” equal to false, but when tested by 'if' it is not false by itself?
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The reason is because when you explicitly do "0" == false, both sides are being converted to numbers, and then the comparison is performed.
When you do: if ("0") console.log("ha"), the string value is being tested. Any non-empty string is true, while an empty s...
This type of CollectionView does not support changes to its SourceCollection from a thread different
...nce your ObservableCollection is created on UI thread, you can only modify it from UI thread and not from other threads. This is termed as thread affinity.
If you ever need to update objects created on UI thread from different thread, simply put the delegate on UI Dispatcher and that will do work f...
AES vs Blowfish for file encryption
... predecessor to Twofish. Twofish was Bruce Schneier's entry into the competition that produced AES. It was judged as inferior to an entry named Rijndael, which was what became AES.
Interesting aside: at one point in the competition, all the entrants were asked to give their opinion of how the ciph...
Why is Hibernate Open Session in View considered a bad practice?
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Because sending possibly uninitialised Proxies, especially collections, in the view layer and triggering hibernate loading from there can be troubling from both a performance and understanding point of view.
Understanding:
Using OSIV 'pollutes' the vie...
Android emulator-5554 offline
I'm having a problem with emulator-5554, it keeps telling me it is offline.
37 Answers
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What is the correct way to start a mongod service on linux / OS X?
I've installed mongodb and have been able to run it, work with it, do simple DB read / write type stuff. Now I'm trying to set up my Mac to run mongod as a service.
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Disable firefox same origin policy
...king on the latest Firefox (build 36.0.1) released March 5, 2015.
I tested it and it's working on both Windows 7 and Mavericks. I'll guide you throught the steps to get it working.
1) Getting the extension
You can either download the xpi from here (author builds) or from here
(mirror, may not be ...
Why does Stream not implement Iterable?
...le have already asked the same on the mailing list ☺. The main reason is Iterable also has a re-iterable semantic, while Stream is not.
I think the main reason is that Iterable implies reusability, whereas Stream is something that can only be used once — more like an Iterator.
If Stream...
How to clone ArrayList and also clone its contents?
How can I clone an ArrayList and also clone its items in Java?
21 Answers
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Tips for a successful AppStore submission? [closed]
In a day or two I'll be ready to submit my iPhone app to the AppStore and I'm curious whether people who have gone through this process have any tips / suggestions for a smooth submission process.
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