Type Table, then Shift-Enter. Ctrl-space for more options.
schoolPopulation
Type Table, then Shift-Enter. Ctrl-space for more options.
a=newSet(school.map((x)=>x.countrycode))
b=newSet(schoolPopulation.map((x)=>x.iso))
difference=newSet([...a].filter((x)=>!b.has(x)))
Purpose-built for displays of data
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