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Initial data commit

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Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 72d218235f
commit f23f22d71c
199087 changed files with 3378941 additions and 0 deletions
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50
Task/Search-a-list-of-records/JavaScript/search-a-list-of-records-1.js Normal file
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(function () {
'use strict';
// find :: (a -> Bool) -> [a] -> Maybe a
function find(f, xs) {
for (var i = 0, lng = xs.length; i < lng; i++) {
if (f(xs[i])) return xs[i];
}
return undefined;
}
// findIndex :: (a -> Bool) -> [a] -> Maybe Int
function findIndex(f, xs) {
for (var i = 0, lng = xs.length; i < lng; i++) {
if (f(xs[i])) return i;
}
return undefined;
}
var lst = [
{ "name": "Lagos", "population": 21.0 },
{ "name": "Cairo", "population": 15.2 },
{ "name": "Kinshasa-Brazzaville", "population": 11.3 },
{ "name": "Greater Johannesburg", "population": 7.55 },
{ "name": "Mogadishu", "population": 5.85 },
{ "name": "Khartoum-Omdurman", "population": 4.98 },
{ "name": "Dar Es Salaam", "population": 4.7 },
{ "name": "Alexandria", "population": 4.58 },
{ "name": "Abidjan", "population": 4.4 },
{ "name": "Casablanca", "population": 3.98 }
];
return {
darEsSalaamIndex: findIndex(function (x) {
return x.name === 'Dar Es Salaam';
}, lst),
firstBelow5M: find(function (x) {
return x.population < 5;
}, lst)
.name,
firstApop: find(function (x) {
return x.name.charAt(0) === 'A';
}, lst)
.population
};
})();

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Task/Search-a-list-of-records/JavaScript/search-a-list-of-records-2.js Normal file
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(() => {
'use strict';
let lst = [
{ "name": "Lagos", "population": 21.0 },
{ "name": "Cairo", "population": 15.2 },
{ "name": "Kinshasa-Brazzaville", "population": 11.3 },
{ "name": "Greater Johannesburg", "population": 7.55 },
{ "name": "Mogadishu", "population": 5.85 },
{ "name": "Khartoum-Omdurman", "population": 4.98 },
{ "name": "Dar Es Salaam", "population": 4.7 },
{ "name": "Alexandria", "population": 4.58 },
{ "name": "Abidjan", "population": 4.4 },
{ "name": "Casablanca", "population": 3.98 }
];
return {
darEsSalaamIndex: lst.findIndex(x => x.name === 'Dar Es Salaam'),
firstBelow5M: lst.find(x => x.population < 5)
.name,
firstApop: lst.find(x => x.name[0] === 'A')
.population
};
})();