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Cartesian product of multiple arrays in JavaScript
...the newly added flatMap.
Special thanks to ECMAScript 2019 for adding flat and flatMap to the language!
Example
This is the exact example from your question:
let output = cartesian([1,2],[10,20],[100,200,300]);
Output
This is the output of that command:
[ [ 1, 10, 100 ],
[ 1, 10, 200 ],
[ 1, 10...
Repository Pattern vs DAL
...the same thing? Just finished to watch Rob Connery's Storefront tutorial and they seem to be similar techinques. I mean, when I implement a DAL object I have the GetStuff, Add/Delete etc methods and I always write the interface first so that I can switch db later.
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What does asterisk * mean in Python? [duplicate]
...nary.
Also, see Function Calls.
Assuming that one knows what positional and keyword arguments are, here are some examples:
Example 1:
# Excess keyword argument (python 2) example:
def foo(a, b, c, **args):
print "a = %s" % (a,)
print "b = %s" % (b,)
print "c = %s" % (c,)
print a...
JSF vs Facelets vs JSP [duplicate]
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JSF is a standardized Java framework for web UIs based on an MVC pattern
JSPs are a (much older) standard for generating web pages from templates - these can be used as the View in a JSF application, but also separately from JSF.
Facele...
Zero-based month numbering [closed]
...nth numbering which is off by 1 -- JavaScript comes to mind, as does Java, and if memory serves, C is another. I have some questions:
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Getting Http Status code number (200, 301, 404, etc.) from HttpWebRequest and HttpWebResponse
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@rusty: If the connection failed and thus the request could not be sent and no response could be received, there won't be any http status code.
– Oliver
Apr 10 '14 at 11:34
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What are “named tuples” in Python?
...tances can be referenced using object-like variable dereferencing or the standard tuple syntax. They can be used similarly to struct or other common record types, except that they are immutable. They were added in Python 2.6 and Python 3.0, although there is a recipe for implementation in Python 2...
Run PHP Task Asynchronously
I work on a somewhat large web application, and the backend is mostly in PHP. There are several places in the code where I need to complete some task, but I don't want to make the user wait for the result. For example, when creating a new account, I need to send them a welcome email. But when they h...
Measuring the distance between two coordinates in PHP
... have the need to calculate the distance between two points having the lat and long.
12 Answers
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How can I start PostgreSQL server on Mac OS X?
I had forgotten to run the initdb command.
33 Answers
33
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