Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 | 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 138x 138x 27x 27x 138x 33x 33x 32x 32x 33x 138x 50x 9x 9x 50x 12x 12x 29x 29x 29x 29x 12x 12x 29x 17x 13x 13x 12x 12x 13x 50x 138x 9x 9x 8x 8x 9x 138x 9x 9x 8x 8x 9x 138x 11x 11x 18x 138x 2x 2x 2x 2x 2x | /**
* @license Apache-2.0
*
* Copyright (c) 2018 The Stdlib Authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
'use strict';
// MODULES //
var isObject = require( '@stdlib/assert/is-plain-object' );
var hasOwnProp = require( '@stdlib/assert/has-own-property' );
var isBoolean = require( '@stdlib/assert/is-boolean' ).isPrimitive;
var isArrayLike = require( '@stdlib/assert/is-array-like-object' );
var isPositiveInteger = require( '@stdlib/assert/is-positive-integer' ).isPrimitive;
var contains = require( '@stdlib/array/base/assert/contains' ).factory;
var format = require( '@stdlib/string/format' );
var METRICS = require( './metrics.json' );
var INIT_METHODS = require( './init_methods.json' );
// VARIABLES //
var isMetric = contains( METRICS );
var isInitMethod = contains( INIT_METHODS );
// MAIN //
/**
* Validates function options.
*
* @private
* @param {Object} opts - destination object
* @param {Options} options - function options
* @param {string} [options.metric] - distance metric
* @param {ArrayLikeObject} [options.init] - method for determining initial centroids
* @param {boolean} [options.normalize] - boolean indicating whether to normalize incoming data
* @param {boolean} [options.copy] - boolean indicating whether to copy incoming data to prevent mutation during normalization
* @param {*} [options.seed] - PRNG seed
* @returns {(Error|null)} null or an error object
*
* @example
* var opts = {};
* var options = {
* 'metric': 'euclidean',
* 'init': [ 'kmeans++', 1, 1 ]
* };
* var err = validate( opts, options );
* if ( err ) {
* throw err;
* }
*/
function validate( opts, options ) {
if ( !isObject( options ) ) {
return new TypeError( format( 'invalid argument. Options argument must be an object. Value: `%s`.', options ) );
}
if ( hasOwnProp( options, 'metric' ) ) {
opts.metric = options.metric;
if ( !isMetric( opts.metric ) ) {
return new TypeError( format( 'invalid option. `%s` option must be one of the following: "%s". Option: `%s`.', 'metric', METRICS.join( '", "' ), opts.metric ) );
}
}
if ( hasOwnProp( options, 'init' ) ) {
if ( !isArrayLike( options.init ) ) {
return new TypeError( format( 'invalid option. `%s` option must be an array-like object. Option: `%s`.', 'init', options.init ) );
}
if ( !isInitMethod( options.init[ 0 ] ) ) {
return new TypeError( format( 'invalid option. `%s` option method must be one of the following: "%s". Option: `%s`.', 'init', INIT_METHODS.join( '", "' ), options.init[ 0 ] ) );
}
opts.init[ 0 ] = options.init[ 0 ];
if ( options.init.length > 1 ) {
opts.init[ 1 ] = options.init[ 1 ];
if ( !isPositiveInteger( opts.init[ 1 ] ) ) {
return new TypeError( format( 'invalid option. First `%s` parameter option must be a positive integer. Option: `%s`.', 'init', opts.init[ 1 ] ) );
}
}
if ( options.init.length > 2 ) {
opts.init[ 2 ] = options.init[ 2 ];
if ( !isPositiveInteger( opts.init[ 2 ] ) ) {
return new TypeError( format( 'invalid option. Second `%s` parameter option must be a positive integer. Option: `%s`.', 'init', opts.init[ 2 ] ) );
}
}
}
if ( hasOwnProp( options, 'normalize' ) ) {
opts.normalize = options.normalize;
if ( !isBoolean( opts.normalize ) ) {
return new TypeError( format( 'invalid option. `%s` option must be a boolean. Option: `%s`.', 'normalize', opts.normalize ) );
}
}
if ( hasOwnProp( options, 'copy' ) ) {
opts.copy = options.copy;
if ( !isBoolean( opts.copy ) ) {
return new TypeError( format( 'invalid option. `%s` option must be a boolean. Option: `%s`.', 'copy', opts.copy ) );
}
}
if ( hasOwnProp( options, 'seed' ) ) {
opts.seed = options.seed;
}
return null;
}
// EXPORTS //
module.exports = validate;
|