foreach range with index

[Ali Çehreli via Digitalmars-d]

On 06/14/2017 12:22 PM, Steven Schveighoffer wrote:

 > foreach(i, v; hashmap) => i is counter, v is value
 >
 > Later hashmap adds support for iterating key and value. Now i is key, v
 > is value. Code means something completely different.
 >
 > Compare with
 >
 > foreach(i, v; hashmap.enumerate)
 >
 > Intent is clear from the code.
 >
 > -Steve

Then, perhaps we're arguing in favor of

* writing .enumerate even for slices (implying that automatic indexing 
for them has been a historical artifact and code that wants to be 
portable should always write .enumerate)

* making sure that enumerate() on arrays don't bring extra cost

Ali