复位一个偏移位置的值.
@param string $offset 待复位的偏移位置.
@return void
190379
public function offsetUnset($offset)
    {
        if (isset($this->keys[$offset])) {
            if (is_object($this->items[$offset])) {
                unset($this->factory[$this->items[$offset]],
                $this->protect[$this->items[$offset]]);
            }
            unset($this->items[$offset], $this->frozen[$offset],
            $this->raw[$offset], $this->keys[$offset]);
        }
    }
1141084
public function offsetUnset($offset)
    {
        if ($this->offsetExists($offset)) {
            unset($this->items[$offset]);
            unset($this->weights[$offset]);
        }
    }
827122
public function offsetUnset($offset = null)
    {
        if (is_null($offset)) {
            $this->config = [];
        } else {
            unset($this->config[$offset]);
        }
    }
211270
public function offsetUnset($offset) {
    if (is_string($offset)) {
      $this->remove($offset);
    }
    else {
      parent::offsetUnset($offset);
    }
  }
294873
public function offsetUnset($offset)
    {
        $method = 'set' . ucfirst($offset);
        if (method_exists($this, $method)) {
            $this->{$method} (null);
        } else {
            $method = 'set' . self::matchPropertyName($offset);
            if (method_exists($this, $method)) {
                $this->{$method} (null);
            } else {
                unset($this->unknownProperties[$offset]);
            }
        }
    }
657513
public function offsetSet($offset, $value): void
    {
        self::validateOffset($offset);
        $this->data[$offset] = $value;
    }
794664
public function offsetUnset($offset)
    {
        $index = $this->findLine($offset);

        if ($index >= 0) {
            unset($this->lines[$index]);
        }
    }
102575
public function setOffset($offset) {
    $this->offset = $offset;
    $this->page = ceil(intval($offset) / $this->pageSize) + 1;
  }
284246
public function offsetUnset( $offset ) {
        $temp = $this->values();

        if ( isset( $temp[ $offset ] ) ) {
            unset( $temp[ $offset ] );
        }

        $this->exchangeArray( array_values( $temp ) );

        $this->size = $this->count();
    }
1068737
public function offsetSet($offset, $value)
    {
        if (true === is_null($offset)) {
            $this->className = $value;
        } else {
            $this->{$offset} = $value;
        }
    }
92100
public function offsetSet($offset, $value): void
    {
        $setter = 'set' . ucfirst($offset);

        if (\method_exists($this, $setter)) {
            $this->$setter($value);
        }
    }
482612
public function offsetUnset($offset)
    {
        unset($this->items[$offset]);

        $this->keys = array_keys($this->items);
    }
213469
public function offsetSet($offset, $value)
    {
        if (isset($this->config[$offset])) {
            $this->config[$offset] = $value;
        }
    }
1327644
public function offsetUnset($offset): void
    {
        self::validateOffset($offset);
        $this->existsOrFail($offset);
        unset($this->data[$offset]);
    }
167970
public function offsetSet($offset, $value): void
    {
        //修改DATA
        if ($value instanceof Row) {
            $this->data[$offset] = $value->all();
        } else {
            $this->data[$offset] = $value;
        }

        //修改ROWS
        $this->rows[$offset] = $value;
    }
539542
public function offsetUnset($offset)
    {
        $keys = explode($this->keySeparator, $offset);

        $keyCount = count($keys);

        $array = &$this->values;

        while ($keyCount > 1) {
            $key = array_shift($keys);

            if (isset($array[$key]) && is_array($array[$key])) {
                $array = &$array[$key];
            }

            --$keyCount;
        }

        unset($array[array_shift($keys)]);
    }
803500
public function offsetSet($offset, $value)
    {
        if (is_null($offset)) {
            $this->lines[] = $value;
        } else {
            $index = $this->findLine($offset);

            if ($index >= 0) {
                $this->lines[$index] = "{$offset}={$value}";
            } else {
                $this->lines[] = "{$offset}={$value}";
            }
        }
    }