Geek asks and answers

Does Coffeescript provide support for nested lists?

For example, given the following structure

    pages = [
        [
            { myvar: 1},
            { myvar: 2},
            { myvar: 3},
        ]
    ];

How can I express understanding (python-like)?

v.myvar for p in pages for v in p
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1 answer

AFAIK, you cannot see: https://github.com/jashkenas/coffee-script/issues/1191

Workaround in the meantime (until CoffeeScript improves):

pages = [
        [
            { myvar: 1},
            { myvar: 2},
            { myvar: 3},
        ]
    ];

result = []
for row in pages
  for map in row
    result.push map.myvar

console.log result

which outputs:

[ 1, 2, 3 ]
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