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What is the difference between static func and class func in Swift?
...bclasses.
Protocols use the class keyword, but it doesn't exclude structs from implementing the protocol, they just use static instead. Class was chosen for protocols so there wouldn't have to be a third keyword to represent static or class.
From Chris Lattner on this topic:
We considered unif...
What algorithms compute directions from point A to point B on a map?
...s work, with a couple of modifications:
Instead of doing Dijkstra's once from source to dest, you start at each end, and expand both sides until they meet in the middle. This eliminates roughly half the work (2*pi*(r/2)^2 vs pi*r^2).
To avoid exploring the back-alleys of every city between your so...
With arrays, why is it the case that a[5] == 5[a]?
...he first element of the array. a[5] is the value that's 5 elements further from a, which is the same as *(a + 5), and from elementary school math we know those are equal (addition is commutative).
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Get a list of URLs from a site [closed]
... FYI: If you are using frontend routing you will not get those routes from this method.
– jasonleonhard
Jun 29 '19 at 22:39
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Will iOS launch my app into the background if it was force-quit by the user?
...notifications
background mode, the system launches your app (or wakes it from the
suspended state) and puts it in the background state when a push
notification arrives. However, the system does not automatically
launch your app if the user has force-quit it. In that situation, the
user mus...
How to delete multiple values from a vector?
...s.na (remove)))
a <- a [! is.na (a)]
(This does not distinguish NA from NaN but the R manual anyways warns that one should not rely on having a difference between them)
For Inf/ -Inf you'll have to check both sign and is.finite
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Proper use of the IDisposable interface
I know from reading the Microsoft documentation that the "primary" use of the IDisposable interface is to clean up unmanaged resources.
...
“CAUTION: provisional headers are shown” in Chrome debugger
... You see this message in the debugger whenever the resource was retrieved from the browser's cache without asking the server if the content has changed.
– Maor
Jun 5 '14 at 8:48
4...
How to get the IP address of the docker host from inside a docker container
...ed to be able to retrieve the IP address the docker hosts and the portmaps from the host to the container, and doing that inside of the container.
...
What is the purpose of shuffling and sorting phase in the reducer in Map Reduce Programming?
...
First of all shuffling is the process of transfering data from the mappers to the reducers, so I think it is obvious that it is necessary for the reducers, since otherwise, they wouldn't be able to have any input (or input from every mapper). Shuffling can start even before the map ...