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| function countLanguages(list) { | |
| return list.reduce((p, c) => { | |
| if (p[c.language]) p[c.language] += 1 | |
| else p[c.language] = 1; | |
| return p; | |
| }, {}) | |
| } |
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| const countLanguages = list => list.reduce((a, {language}) => (a[language] = (a[language] || 0) + 1) && a, {}); |
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