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In Flux architecture, how do you manage Store lifecycle?

... In a Flux app there should only be one Dispatcher. All data flows through this central hub. Having a singleton Dispatcher allows it to manage all Stores. This becomes important when you need Store #1 update itself, and then have Store #2 update itself based on both the Acti...
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How to send a correct authorization header for basic authentication

...ryption of course, you'll need the username password, it's not 'Basic hashstring. hope this helps... share | improve this answer | follow | ...
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Crontab Day of the Week syntax

... @Nikita check for typos or extra spaces. I have both a "Mon-Fri" and a "Thu" in my crontab on Ubuntu 14.04.3 and both work just fine. I suspect if there's a space between any of the characters, you'd end up with an error. – Dale A...
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Sending command line arguments to npm script

...rameter values, but this is a low-level API (whitespace-separated array of strings, as provided by the operating system to the node executable). Edit 2013.10.03: It's not currently possible directly. But there's a related GitHub issue opened on npm to implement the behavior you're asking for. Se...
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What are the applications of binary trees?

...ningless - they are not a data structure, but a family of data structures, all with different performance characteristics. While it is true that unbalanced binary trees perform much worse than self-balancing binary trees for searching, there are many binary trees (such as binary tries) for which "b...
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Does Python have an ordered set?

... I'm pretty sure you're not allowed to have two methods both called union in the same class. The last one will "win" and the first one will fail to exist at runtime. This is because OrderedSet.union (no parens) has to refer to a single object. ...
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How can I maintain fragment state when added to the back stack?

... back stack. However, when I return to FragmentA (by pressing back), a totally new FragmentA is created and the state it was in is lost. I get the feeling I'm after the same thing as this question, but I've included a complete code sample to help root out the issue: ...
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Select count(*) from multiple tables

How can I select count(*) from two different tables (call them tab1 and tab2 ) having as result: 18 Answers ...
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How to link to part of the same document in Markdown?

...ink, i.e. [Foo](##foo)? I cannot get your syntax or mine to work (with the extra number sign). – GrayedFox Oct 12 '16 at 14:08 7 ...
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NSInvocation for Dummies?

...o the target object) later on. For example, let's say you want to add a string to an array. You would normally send the addObject: message as follows: [myArray addObject:myString]; Now, let's say you want to use NSInvocation to send this message at some other point in time: First, you would...