add fun "emysql:as_maps/1"

[dcy]

Hi!
I added the fun "emysql:as_maps/1".
And the test result:
21 basics_SUITE conversion maps_empty_test < > 0.000s Ok
22 basics_SUITE conversion maps_single_test < > 0.000s Ok
23 basics_SUITE conversion maps_multi_test < > 0.000s Ok

[dcy]

The Travis Ci build's error because maps are not support in R16

[tnt-dev]

Maybe it's better to enable this function only for OTP >= 17 for compatibility?

[dcy]

How to enable this function only for 17?

[dcy]

Could you have a look at this pull request??

[tnt-dev]

@dcy, You can use something like

{platform_define, "^[0-9]+", maps_available} 

in rebar.config and

-ifdef(maps_available).
-export([as_maps/1]).
-endif.

in code.

[dcy]

"-ifdef(maps_available)." works in emysql.erl
but not works in basics_SUITE.erl

And what's the problem with The Travis CI:
The command "source $HOME/otp/17.0-rc1/activate" failed and exited with 1 during .
Your build has been stopped.

[tnt-dev]

And what's the problem with The Travis CI:
The command "source $HOME/otp/17.0-rc1/activate" failed and exited with 1 during .
Your build has been stopped.

Try to change otp_releases in travis.yml from

 - 17.0-rc1

to

 - 17.3
 - 17.1
 - 17.0