Simplest way to create an array from an associative array which its contains keys and values?
Craig Dillabaugh
cdillaba at cg.scs.carleton.ca
Tue Jan 7 12:38:10 PST 2014
On Friday, 3 January 2014 at 17:38:16 UTC, Gary Willoughby wrote:
> Simplest way to create an array from an associative array which
> its contains keys and values?
>
> For example if i have an associative array like this:
>
> ["one":"1", "two":"2"]
>
> What's the easiest way to create a dynamic array that looks
> like this:
>
> ["one", "1", "two", "2"]
>
> I know it can be done via a loop, but is there a more idiomatic
> way to achieve this?
As someone with little experience with functional programming, I
am just curious - having browsed through the thread - if the
various solutions proposed here would really be considered more
'idiomatic' D. Or if they were posted because the OP asked about
avoiding the foreach() loop.
In other words while:
auto range = aa.byKey.map!(a => chain(a.only, aa[a].only));
string[] array = range.join;
Saves a few lines of code, and looks cooler, it seems that the
trivial foreach loop version is very easy:
string[] array;
foreach (key, value; aa) {
array ~= key;
array ~= value;
}
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