How do you implement your own range in D? I've looked everywhere but I can't find any documentation on which methods (like popFront, for example) need to be implemented for which kinds of ranges.
This should be it
http://www.digitalmars.com/d/2.0/phobos/std_range.html
Related
Is there an updated list of Swift global functions? That is, functions that can be accessed from anywhere without the scope of a specific type, like max(),min(),dump(), zip(), sequence(), etc.
On the Apple docs the nearest link I found out is link, but it only refers min and max.
When building project documentation in docC by default all the global functions for a particular module are grouped under Functions section similar to Protocols section for protocols etc. Apple has customized this behavior so that global functions are grouped in different sections depending on their usage topic. Right now there is no way to list all of the global functions, you have to find them one by one manually. However, there is some work going on to implement fuzzy search on docC documentations to search using certain type of symbols etc.
These words are difficult to search online, so I can't find any information on them besides the docs, which seems to me to have almost the same description (specially for as and to).
What's the difference between as(), to() and compose() in RxJava2? When should I use any of them?
to and as are practically the same. The difference is that to uses the more broad Function interface and as uses the dedicated XConverter interface. The former can't be implemented for multiple reactive types. Issue, PR.
The difference between to/as and compose is that the former lets you turn the sequence into arbitrary result type during assembly time whereas the latter can only turn into the same reactive type but possibly different type argument(s).
I am not able to understand what is the difference between these two keywords in swift3?
If anyone has a link to a good article about this, please share.
There is no difference conceptually; moduleprivate was just a possible alternate name for the same access level that didn't get accepted during discussions about access control modifier naming.
https://lists.swift.org/pipermail/swift-evolution/Week-of-Mon-20160328/013854.html
The internal modifier is the only one of the two that actually exists in the Swift language, but the two names represent the same behavior.
I am looking at this language from the Swift GeneratorType documentation and I'm having a hard time understanding it:
Any code that uses multiple generators (or for...in loops) over a single sequence should have static knowledge that the specific sequence is multi-pass, either because its concrete type is known or because it is constrained to CollectionType. Also, the generators must be obtained by distinct calls to the sequence's generate() method, rather than by copying.
What does it mean for a sequence to be "multi-pass"? This language seems quite important, but I can't find a good explanation for it. I understand, for example, the concept of a "multi-pass compiler", but I'm unsure if the concepts are similar or related...
Also, I have searched SO for other posts that answer this question. I have found this one, which makes the following statement in the C++ context:
The difference between algorithms that copy their iterators and those that do not is that the former are termed "multipass" algorithms, and require their iterator type to satisfy ForwardIterator, while the latter are single-pass and only require InputIterator.
But the meaning of that isn't entirely clear to me either, and I'm not sure if the concept is the same in Swift.
Any insight from those wiser than me would be much appreciated.
A "multi-pass" sequence is one that can be iterated over multiple times via a for...in loop or by using any number of generators (constructed via generate())
The text explains you would know a sequence is multi-pass because you
know its type (perhaps a class you designed) or
know it conforms to CollectionType. (for example, sets and arrays)
In VHDL, I often use records to group related signals into something that can be passed around as a single object, e.g. in a port map. What's the MyHDL way of doing this?
Interfaces are available in the 0.9-dev and
are straightforward. If you have an object
(class) with Signals in it it will be name
extended in conversion.
It is explained in the MEP
http://www.myhdl.org/doku.php/meps:mep-107
More examples available here (I realize it
is not well documented - yet):
https://bitbucket.org/cfelton/minnesota
Also, a small example available here:
http://www.edaplayground.com/s/130/941