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<?php |
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/** |
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* @author Maxim Sokolovsky |
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*/ |
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namespace WS\Utils\Collections\Functions; |
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use Closure; |
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use WS\Utils\Collections\HashSet; |
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class Predicates |
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{ |
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/** |
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* Returns <Fn($el: mixed): bool> blocked all tries |
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* @return Closure |
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*/ |
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public static function lock(): Closure |
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{ |
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return static function (): bool { |
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return false; |
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}; |
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} |
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/** |
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* Returns <Fn($el: mixed): bool> passed all not null elements |
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* @return Closure |
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*/ |
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public static function notNull(): Closure |
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{ |
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return static function ($el): bool { |
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return $el !== null; |
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}; |
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} |
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/** |
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* Returns <Fn($el: mixed): bool> passed all tries |
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* @return Closure |
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*/ |
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public static function notResistance(): Closure |
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{ |
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return static function (): bool { |
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return true; |
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}; |
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} |
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/** |
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* Returns <Fn($el: mixed): bool> passed each even element of call |
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* @return Closure |
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*/ |
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public static function eachEven(): Closure |
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{ |
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$isEven = false; |
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return static function () use (& $isEven) { |
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$res = $isEven; |
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$isEven = !$isEven; |
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return $res; |
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}; |
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} |
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/** |
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* Returns <Fn($el: mixed): bool> passed each nth element of call |
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* @param $number |
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* @return Closure |
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*/ |
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public static function nth($number): Closure |
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{ |
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$counter = 0; |
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return static function () use ($number, & $counter) { |
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$res = ++$counter % $number === 0; |
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if ($res) { |
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$counter = 0; |
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} |
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return $res; |
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}; |
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} |
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/** |
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* Returns <Fn($el: mixed): bool> passed with equal value |
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* @param $value |
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* @return Closure |
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*/ |
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public static function equal($value): Closure |
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{ |
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return static function ($el) use ($value): bool { |
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return $el === $value; |
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}; |
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} |
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/** |
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* Returns <Fn($el: mixed): bool> passed unique element at once |
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*/ |
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public static function lockDuplicated(?callable $caster = null): Closure |
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{ |
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$set = new HashSet(); |
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return static function ($el) use ($set, $caster): bool { |
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$el = isset($caster) ? $caster($el) : $el; |
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$res = !$set->contains($el); |
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$set->add($el); |
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return $res; |
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}; |
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} |
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/** |
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* Returns <Fn($el: mixed): bool> passed with less than value comparing |
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* @param $value |
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* @return Closure |
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*/ |
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public static function lessThan($value): Closure |
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{ |
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return static function ($el) use ($value): bool { |
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return $el < $value; |
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}; |
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} |
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/** |
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* Returns <Fn($el: mixed): bool> passed with less or equal value comparing |
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* @param $value |
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* @return Closure |
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*/ |
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public static function lessOrEqual($value): Closure |
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{ |
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return static function ($el) use ($value): bool { |
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return $el <= $value; |
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}; |
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} |
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/** |
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* Returns <Fn($el: mixed): bool> passed with more than value comparing |
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* @param $value |
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* @return Closure |
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*/ |
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public static function greaterThan($value): Closure |
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{ |
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return static function ($el) use ($value): bool { |
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return $el > $value; |
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}; |
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} |
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/** |
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* Returns <Fn($el: mixed): bool> passed with more or equal value comparing |
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* @param $value |
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* @return Closure |
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*/ |
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public static function greaterOrEqual($value): Closure |
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{ |
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return static function ($el) use ($value): bool { |
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return $el >= $value; |
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}; |
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} |
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/** |
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* Returns <Fn($el: mixed): bool> passed with not value comparing |
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* @param $value |
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* @return Closure |
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*/ |
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public static function not($value): Closure |
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{ |
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return static function ($el) use ($value): bool { |
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return $el !== $value; |
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}; |
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} |
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/** |
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* Returns <Fn($el: mixed): bool> passed with include of set value comparing |
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* @param array $values |
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* @return Closure |
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*/ |
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public static function in(array $values): Closure |
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{ |
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return static function ($el) use ($values): bool { |
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return in_array($el, $values, true); |
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}; |
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} |
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/** |
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* Returns <Fn($el: mixed): bool> passed with not include of set value comparing |
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* @param array $values |
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* @return Closure |
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*/ |
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public static function notIn(array $values): Closure |
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{ |
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return static function ($el) use ($values): bool { |
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return !in_array($el, $values, true); |
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}; |
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} |
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/** |
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* Returns <Fn($el: mixed): bool> passed with where object property value comparing |
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* @param string $property |
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* @param $value |
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* @return Closure |
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*/ |
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public static function where(string $property, $value): Closure |
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{ |
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return static function ($ob) use ($property, $value) { |
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return $value === ObjectFunctions::getPropertyValue($ob, $property); |
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}; |
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} |
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/** |
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* Returns <Fn($el: mixed): bool> passed with where not object property value comparing |
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* @param string $property |
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* @param $value |
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* @return Closure |
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*/ |
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public static function whereNot(string $property, $value): Closure |
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{ |
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return static function ($ob) use ($property, $value) { |
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return $value !== ObjectFunctions::getPropertyValue($ob, $property); |
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}; |
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} |
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/** |
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* Returns <Fn($el: mixed): bool> passed with where present in a set of object property value comparing |
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* @param string $property |
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* @param array $values |
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* @return Closure |
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*/ |
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public static function whereIn(string $property, array $values): Closure |
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{ |
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return static function ($ob) use ($property, $values) { |
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return in_array(ObjectFunctions::getPropertyValue($ob, $property), $values, true); |
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}; |
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} |
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/** |
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* Returns <Fn($el: mixed): bool> passed with where not present in a set of object property value comparing |
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* @param string $property |
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* @param array $values |
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* @return Closure |
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*/ |
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public static function whereNotIn(string $property, array $values): Closure |
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{ |
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return static function ($ob) use ($property, $values) { |
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return !in_array(ObjectFunctions::getPropertyValue($ob, $property), $values, true); |
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}; |
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} |
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/** |
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* Returns <Fn($el: mixed): bool> passed with more than object property value comparing |
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* @param string $property |
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* @param $value |
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* @return Closure |
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*/ |
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public static function whereGreaterThan(string $property, $value): Closure |
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{ |
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return static function ($ob) use ($property, $value) { |
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return ObjectFunctions::getPropertyValue($ob, $property) > $value; |
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}; |
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} |
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/** |
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* Returns <Fn($el: mixed): bool> passed with less than object property value comparing |
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* @param string $property |
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* @param $value |
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* @return Closure |
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*/ |
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public static function whereLessThan(string $property, $value): Closure |
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{ |
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return static function ($ob) use ($property, $value) { |
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return ObjectFunctions::getPropertyValue($ob, $property) < $value; |
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}; |
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} |
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/** |
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* Returns <Fn($el: mixed): bool> passed with more or equal object property value comparing |
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* @param string $property |
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* @param $value |
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* @return Closure |
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*/ |
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public static function whereGreaterOrEqual(string $property, $value): Closure |
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{ |
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return static function ($ob) use ($property, $value) { |
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return ObjectFunctions::getPropertyValue($ob, $property) >= $value; |
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}; |
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} |
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/** |
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* Returns <Fn($el: mixed): bool> passed with less or equal object property value comparing |
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* @param string $property |
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* @param $value |
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* @return Closure |
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*/ |
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public static function whereLessOrEqual(string $property, $value): Closure |
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{ |
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return static function ($ob) use ($property, $value) { |
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return ObjectFunctions::getPropertyValue($ob, $property) <= $value; |
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}; |
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} |
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/** |
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* Returns <Fn($el: mixed): bool> passed only one time with first element |
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* @return Closure |
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*/ |
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public static function first(): Closure |
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{ |
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$runOut = false; |
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return static function () use (& $runOut) { |
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if ($runOut) { |
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return false; |
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} |
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$runOut = true; |
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return true; |
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}; |
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} |
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} |
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