*
 * <p><b>Note:</b> Currently the escapers provided by this class do not escape any characters
 * outside the ASCII character range. Unlike HTML escaping the XML escapers will not escape
 * non-ASCII characters to their numeric entity replacements. These XML escapers provide the minimal
 * level of escaping to ensure that the output can be safely included in a Unicode XML document.
 *

        value = "${special}";
        assertEquals("value$with\\backslash", ResourceUtil.resolve(value));

        // Test with numeric property names
        System.setProperty("123", "numeric");
        value = "${123}";
        assertEquals("numeric", ResourceUtil.resolve(value));

        // Test with underscores in property names
        System.setProperty("test_var", "underscore");

            builder.allRecordCountRelation(Relation.EQUAL_TO.toString());
            return builder.build();
        }
    }

    /**
     * Searcher that returns documents with numeric ID field.
     */
    static class NumericIdFieldSearcher extends RankFusionSearcher {
        @Override
        protected SearchResult search(String query, SearchRequestParams params, OptionalThing<FessUserBean> userBean) {

    }

    @ParameterizedTest
    @ValueSource(strings = { "123456", "007", "999" })
    void isAllDigitsTrueForPureNumeric(String numeric) {
        assertTrue(UniAddress.isAllDigits(numeric));
    }

    @ParameterizedTest
    @ValueSource(strings = { "12a", "abc", "123 " })
    void isAllDigitsFalseForNonNumeric(String nonNumeric) {

import org.elasticsearch.gradle.internal.test.rest.transform.ReplaceByKey;
import org.gradle.api.tasks.Internal;

/**
 * A transformation to replace the key in a length assertion, must be a numeric type
 * For example, change from "length":{"index._doc": 1} to "length":{"index._doc": 2}
 */
public class ReplaceValueInLength extends ReplaceByKey {

    /**
     * Channel is being closed
     */
    CLOSING(7);

    private final int value;

    ChannelState(int value) {
        this.value = value;
    }

    /**
     * Get the numeric value of this state
     *
     * @return state value
     */
    public int getValue() {
        return value;
    }

      return routes[nextRouteIndex++]
    }
  }

  companion object {
    /** Obtain a host string containing either an actual host name or a numeric IP address. */
    val InetSocketAddress.socketHost: String get() {
      // The InetSocketAddress was specified with a string (either a numeric IP or a host name). If
      // it is a name, all IPs for that name should be tried. If it is an IP address, only that IP
      // address should be tried.

        buf[1] = 0x02; // count = 512 in little-endian
        resp.readParameterWordsWireFormat(buf, 0);
        String str = resp.toString();
        assertTrue(str.contains("count=512"), "toString should include numeric count");
    }

    @Test
    public void testReturnFromReadParameterWordsWireFormatIs8() {
        // ensure the method returns 8 as claimed
        byte[] buf = new byte[12];
        buf[0] = 0x00;

///

## About HTTP status codes { #about-http-status-codes }

/// note

If you already know what HTTP status codes are, skip to the next section.

///

In HTTP, you send a numeric status code of 3 digits as part of the response.

These status codes have a name associated to recognize them, but the important part is the number.

In short:

	aggFnCount FuncName = "COUNT"
	aggFnMax   FuncName = "MAX"
	aggFnMin   FuncName = "MIN"
	aggFnSum   FuncName = "SUM"
)

var (
	errNonNumericArg = func(fnStr FuncName) error {
		return fmt.Errorf("%s() requires a numeric argument", fnStr)
	}
	errInvalidAggregation = errors.New("Invalid aggregation seen")
)

type aggVal struct {
	runningSum             *Value
	runningCount           int64
	runningMax, runningMin *Value