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Diffstat (limited to 'node_modules/fbjs/lib/countDistinct.js.flow')
-rw-r--r-- | node_modules/fbjs/lib/countDistinct.js.flow | 31 |
1 files changed, 0 insertions, 31 deletions
diff --git a/node_modules/fbjs/lib/countDistinct.js.flow b/node_modules/fbjs/lib/countDistinct.js.flow deleted file mode 100644 index 25676aa8d..000000000 --- a/node_modules/fbjs/lib/countDistinct.js.flow +++ /dev/null @@ -1,31 +0,0 @@ -/** - * Copyright (c) 2013-present, Facebook, Inc. - * - * This source code is licensed under the MIT license found in the - * LICENSE file in the root directory of this source tree. - * - * @providesModule countDistinct - * @flow - */ - -'use strict'; - -var Set = require('./Set'); - -var emptyFunction = require('./emptyFunction'); - -/** - * Returns the count of distinct elements selected from an array. - */ -function countDistinct<T1, T2>(iter: Iterable<T1>, selector: (item: T1) => T2): number { - selector = selector || emptyFunction.thatReturnsArgument; - - var set = new Set(); - for (var val of iter) { - set.add(selector(val)); - } - - return set.size; -} - -module.exports = countDistinct;
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