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Should flux stores, or actions (or both) touch external services?
... former approach), I believe that stores should be dumb recipients of data from the actions, and that asynchronous processing of writes should live in the action creators. (Async reads can be handled differently.) In my experience, this has a few benefits, in order of importance:
Your stores becom...
Covariance and contravariance real world example
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Let's say you have a class Person and a class that derives from it, Teacher. You have some operations that take an IEnumerable<Person> as the argument. In your School class you have a method that returns an IEnumerable<Teacher>. Covariance allows you to directly use th...
Regular expression to get a string between two strings in Javascript
...chnique helps to a greater extent. Trying to grab all between cow and milk from "Their\ncow\ngives\nmore\nmilk", we see that we just need to match all lines that do not start with milk, thus, instead of cow\n([\s\S]*?)\nmilk we can use:
/cow\n(.*(?:\n(?!milk$).*)*)\nmilk/gm
See the regex demo (if t...
C# Class naming convention: Is it BaseClass or ClassBase or AbstractClass
...hat “Base” designates base classes that are meant only to be inherited from— not to be used directly. With your example, a class named “Vehicle” sounds like something that can be used and “driven”— it claims itself to be a vehicle. However, if the base class were named “Vehicle P...
Setting PayPal return URL and making it auto return?
...return in your PayPal account, otherwise it will ignore the return field.
From the documentation (updated to reflect new layout Jan 2019):
Auto Return is turned off by default.
To turn on Auto Return:
Log in to your PayPal account at https://www.paypal.com or https://www.sandbox.paypa...
Why doesn't java.lang.Number implement Comparable? [duplicate]
...e for certain underlying implementations. Instead of excluding the methods from the API and requiring programmers to check the type of the implementation, Sun chose to have abstract versions of the methods and recommend throwing an exception if the implementation does not support the method. See Lis...
RegEx to extract all matches from string using RegExp.exec
I'm trying to parse the following kind of string:
17 Answers
17
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What's the strangest corner case you've seen in C# or .NET? [closed]
...t if you simply round up, you will end up with potentially huge difference from the sum of the non-rounded numbers. Very bad if you are doing financial calculations!
– Tsvetomir Tsonev
Oct 12 '08 at 10:05
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viewWillDisappear: Determine whether view controller is being popped or is showing a sub-view contro
...t:self] == NSNotFound) {
// View is disappearing because it was popped from the stack
NSLog(@"View controller was popped");
}
}
This is, of course, possible because the UINavigationController's view controller stack (exposed through the viewControllers property) has been updated by the t...
Order Bars in ggplot2 bar graph
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@Prasad the former was a leftover from testing so thanks for pointing that out. As far the latter, I prefer explicitly asking for the reversed sort than the - you use as it is far easier to get the intention from decreasing = TRUE than noticing the - in all t...