Does hydra support lambda function

[jayleicn]

Hi friends!

I want to achieve the following

item1: 100
item2: 1000
item3: max(${item1}, ${item2})  # value should be the larger of the two

and

item11: True
item21: 10000
item31: 10 if${item11} else ${item21}

Are these supported by Hydra? I searched aaround and digged into the wiki but did not have any luck.

[odelalleau]

Use something like

OmegaConf.register_new_resolver("max", max)
OmegaConf.register_new_resolver("if", lambda cond, x, y: x if cond else y)

then you should be able to use

item3: "${max: ${item1}, ${item2}}"
item31: "${if:${item11},10,${item21}}"

[jayleicn]

Thanks! This is very helpful!