<!--{
	"Title": "The Go Programming Language Specification",
	"Subtitle": "Language version go1.25 (Feb 25, 2025)",
	"Path": "/ref/spec"
}-->

<h2 id="Introduction">Introduction</h2>

<p>
This is the reference manual for the Go programming language.
For more information and other documents, see <a href="/">go.dev</a>.
</p>

<p>
Go is a general-purpose language designed with systems programming

        this.teletexTerminalIdentifier = value;
    }

    public String getTitle() {
        checkSpecifiedProperty("title");
        return convertEmptyToNull(title);
    }

    public void setTitle(String value) {
        registerModifiedProperty("title");
        this.title = value;
    }

    public Long getUidNumber() {
        checkSpecifiedProperty("uidNumber");
        return uidNumber;
    }

 *   <li>All events for a given listener dispatch on the provided executor.
 *   <li>It is easy for the user to ensure that listeners are never invoked while holding locks.
 * </ul>
 *
 * The last point is subtle. Often the observable object will be managing its own internal state
 * using a lock, however it is dangerous to dispatch listeners while holding a lock because they

Using `rsa1024min=0` restores the Go 1.23 behavior.

Go 1.24 introduced a mechanism for enabling platform specific Data Independent
Timing (DIT) modes in the [`crypto/subtle`](/pkg/crypto/subtle) package. This
mode can be enabled for an entire program with the `dataindependenttiming` setting.
For Go 1.24 it defaults to `dataindependenttiming=0`. There is no change in default

			if subtle.ConstantTimeCompare(oldKey, newKey) == 1 {
				return errInvalidSSEParameters // AWS returns special error for equal but invalid keys.
			}
			return crypto.ErrInvalidCustomerKey // To provide strict AWS S3 compatibility we return: access denied.
		}

		if subtle.ConstantTimeCompare(oldKey, newKey) == 1 && sealedKey.Algorithm == crypto.SealAlgorithm {

pkg crypto/sha3, method (*SHAKE) UnmarshalBinary([]uint8) error #69982
pkg crypto/sha3, method (*SHAKE) Write([]uint8) (int, error) #69982
pkg crypto/sha3, type SHA3 struct #69982
pkg crypto/sha3, type SHAKE struct #69982
pkg crypto/subtle, func WithDataIndependentTiming(func()) #66450
pkg crypto/tls, const X25519MLKEM768 = 4588 #69985
pkg crypto/tls, const X25519MLKEM768 CurveID #69985
pkg crypto/tls, type ClientHelloInfo struct, Extensions []uint16 #32936

        viewHelper.addInitGeoParam("key2", "value2");
        assertEquals("key2", viewHelper.getInitGeoParamMap().get("value2"));

        FacetQueryView facetQueryView = new FacetQueryView();
        facetQueryView.setTitle("test");
        viewHelper.addFacetQueryView(facetQueryView);
        assertTrue(viewHelper.getFacetQueryViewList().contains(facetQueryView));

        viewHelper.addInlineMimeType("text/plain");

                (et, vl) -> ((User) et).setTeletexTerminalIdentifier(DfTypeUtil.toString(vl)), "teletexTerminalIdentifier");
        setupEpg(_epgMap, et -> ((User) et).getTitle(), (et, vl) -> ((User) et).setTitle(DfTypeUtil.toString(vl)), "title");
        setupEpg(_epgMap, et -> ((User) et).getUidNumber(), (et, vl) -> ((User) et).setUidNumber(DfTypeUtil.toLong(vl)), "uidNumber");

   * String#equalsIgnoreCase}). However in almost all cases that ASCII strings are used, the author
   * probably wanted the behavior provided by this method rather than the subtle and sometimes
   * surprising behavior of {@code toUpperCase()} and {@code toLowerCase()}.
   *
   * @since 16.0
   */
  public static boolean equalsIgnoreCase(CharSequence s1, CharSequence s2) {

var lookingForIndex, index, invalid int lookingForIndex = 1 rest := db[hash.Size():] for i := 0; i < len(rest); i++ { equals0 := subtle.ConstantTimeByteEq(rest[i], 0) equals1 := subtle.ConstantTimeByteEq(rest[i], 1) index = subtle.ConstantTimeSelect(lookingForIndex&equals1, i, index) lookingForIndex = subtle.ConstantTimeSelect(equals1, 0, lookingForIndex) invalid = subtle.ConstantTimeSelect(lookingForIndex&^equals0, 1, invalid) } if firstByteIsZero&lHash2Good&^invalid&^lookingForIndex != 1 { return...