#### Union { #union }

You can declare that a variable can be any of **several types**, for example, an `int` or a `str`.

To define it you use the <dfn title='also called "bitwise or operator", but that meaning is not relevant here'>vertical bar (`|`)</dfn> to separate both types.

This is called a "union", because the variable can be anything in the union of those two sets of types.

    accessed by another process" error. The <code>FILE_SHARE_READ</code>,
    <code>FILE_SHARE_WRITE</code>, and <code>FILE_SHARE_DELETE</code> may be
    combined with the bitwise OR '|' to specify that other peocesses may read,
    write, and/or delete the file while the jCIFS user has the file open.
     *
     * @param url An smb URL representing the file to write to

        this.flags2 = fl;
    }

    /**
     * Adds flags to the flags2 field using bitwise OR
     * @param fl flags to add
     */
    public final void addFlags2(final int fl) {
        this.flags2 |= fl;
    }

    /**
     * Removes flags from the flags2 field using bitwise AND NOT
     * @param fl flags to remove
     */
    public final void remFlags2(final int fl) {

    * 这个 `dict` 的键是 `str` 类型（比如，每个条目的名称）。
    * 这个 `dict` 的值是 `float` 类型（比如，每个条目的价格）。

#### Union { #union }

你可以声明一个变量可以是若干种类型中的任意一种，比如既可以是 `int` 也可以是 `str`。

定义时使用<dfn title='也叫“按位或运算符（bitwise or operator）”，但这里与该含义无关'>竖线（`|`）</dfn>把两种类型分开。

这称为“联合类型”（union），因为变量可以是这两类类型集合的并集中的任意一个。

```Python hl_lines="1"
{!> ../../docs_src/python_types/tutorial008b_py310.py!}
```

这表示 `item` 可以是 `int` 或 `str`。

     */
    void setReadOnly() throws CIFSException;

    /**
     * Set the attributes of this file. Attributes are composed into a
     * bitset by bitwise ORing the <code>ATTR_*</code> constants. Setting the
     * value returned by <code>getAttributes</code> will result in both files
     * having the same attributes.
     *
     * @param attrs

	SEXTB	X16, X17				// 93184860
	SEXTH	X17, X18				// 13995860
	XNOR	X18, X19, X20				// 33ca2941 or 33ca2901134afaff
	XNOR	X18, X19				// b3c92941 or b3c9290193c9f9ff
	ZEXTH	X19, X20				// 3bca0908

	// 28.4.2: Bitwise Rotation (Zbb)
	ROL	X8, X9, X10				// 33958460 or b30f8040b3dff4013395840033e5af00
	ROL	X8, X9					// b3948460 or b30f8040b3dff401b3948400b3e49f00
	ROLW	X9, X10, X11				// bb159560 or b30f9040bb5ff501bb159500b3e5bf00

*    product                integers, floats, complex values
/    quotient               integers, floats, complex values
%    remainder              integers

&    bitwise AND            integers
|    bitwise OR             integers
^    bitwise XOR            integers
&^   bit clear (AND NOT)    integers

<<   left shift             integer << integer >= 0

<p>
This is the list of instructions and their spellings as known to the assembler and linker for that architecture.
Each instruction begins with an initial capital <code>A</code> in this list, so <code>AAND</code>
represents the bitwise and instruction,
<code>AND</code> (without the leading <code>A</code>),
and is written in assembly source as <code>AND</code>.
The enumeration is mostly in alphabetical order.

            return 0;
        }
        exists();
        return attributes & ATTR_GET_MASK;
    }

    /**
     * Set the attributes of this file. Attributes are composed into a
     * bitset by bitwise ORing the {@code ATTR_*} constants. Setting the
     * value returned by {@code getAttributes} will result in both files
     * having the same attributes.
     * @param attrs the attributes to set

ile.Name()) if _, err := io.WriteString(tmplAddchainFile, tmplAddchain); err != nil { log.Fatal(err) } if err := tmplAddchainFile.Close(); err != nil { log.Fatal(err) } for _, c := range curves { p := strings.ToLower(c.P) elementLen := (c.Params.BitSize + 7) / 8 B := fmt.Sprintf("%#v", c.Params.B.FillBytes(make([]byte, elementLen))) Gx := fmt.Sprintf("%#v", c.Params.Gx.FillBytes(make([]byte, elementLen))) Gy := fmt.Sprintf("%#v", c.Params.Gy.FillBytes(make([]byte, elementLen))) log.Printf("Generating...