Malloy

The apply operator is now ? and not :

In the transition from filters being with an array like syntax ...


sourceName :[ fieldName: value1|value2 ]


The use of `:` as the apply operator became a readability problem ...


sourceName { where: fieldName: value1|value2 }


As of this release, use of the `:` as an apply operator will generate a warning,
and in a near future release it will be a compiler error. The correct
syntax for apply is now the `?` operator. As in


sourceName { where: fieldName ? value1|value2 }

Deprecation of brackets for lists of items

Prior to v0.0.9, lists of things were contained inside `[ ]`. Going forward, the brackets have been removed. Our hope is that this will be one less piece of punctuation to track, and will make it easier to change from a single item in a list to multiple without adding in brackets.

For example, this syntax:
malloy
query: table('malloy-data.faa.airports') -> {
top: 10
group_by: [
faa_region
state
]
aggregate: [
airport_count is count()
count_public is count() { where: fac_use = 'PU' },
average_elevation is round(elevation.avg(),0)
]
where: [
faa_region: 'ANM' | 'ASW' | 'AWP' | 'AAL' | 'ASO' ,
major = 'Y' ,
fac_type = 'AIRPORT'
]
}


Is now written:
malloy
query: table('malloy-data.faa.airports') -> {
top: 10
group_by:
faa_region
state
aggregate:
airport_count is count()
count_public is count() { where: fac_use = 'PU' },
average_elevation is round(elevation.avg(),0)
where:
faa_region: 'ANM' | 'ASW' | 'AWP' | 'AAL' | 'ASO' ,
major = 'Y' ,
fac_type = 'AIRPORT'
}