| @@ 44-50 (lines=7) @@ | ||
| 41 | return ''; |
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| 42 | } |
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| 43 | ||
| 44 | public function addFirst($element) |
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| 45 | { |
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| 46 | if ('' !== $errorMessage = $this->checkAddOffer($element)) { |
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| 47 | throw new \InvalidArgumentException($errorMessage); |
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| 48 | } |
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| 49 | $this->storage->unshift($element); |
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| 50 | } |
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| 51 | ||
| 52 | public function addLast($element) |
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| 53 | { |
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| @@ 52-58 (lines=7) @@ | ||
| 49 | $this->storage->unshift($element); |
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| 50 | } |
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| 51 | ||
| 52 | public function addLast($element) |
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| 53 | { |
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| 54 | if ('' !== $errorMessage = $this->checkAddOffer($element)) { |
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| 55 | throw new \InvalidArgumentException($errorMessage); |
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| 56 | } |
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| 57 | $this->storage->push($element); |
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| 58 | } |
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| 59 | ||
| 60 | public function offerFirst($element) |
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| 61 | { |
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