What can make scala more popular?

[AMatveev]

@tarsa

Is simple method call too pricey?

Json and a first-class extensible records syntax

If I understand correctly structural-types use access method by key. The documentation says that it is for database access. It is very important to note that most jdbc drivers use access method by index. I have made a test which illustrates that processing large data by key significantly slower: by key used memory:408000000 total time:2.458646836 by index used memory:17600000 total time:0.031717541 ratio memory:23.18181818181818181818181818181818 time:77.5169435739044209007249332…

When we need filtering or sorting for example, access by key will appear in a profile report. It is annoying.