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/*
 * Copyright 2010-2014 JetBrains s.r.o.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

@file:kotlin.jvm.JvmMultifileClass
@file:kotlin.jvm.JvmName("CharsKt")

package kotlin.text

/**
 * Concatenates this Char and a String.
 */
@kotlin.internal.InlineOnly
public inline operator fun Char.plus(other: String) : String = this.toString() + other

/**
 * Returns `true` if this character is equal to the [other] character, optionally ignoring character case.
 *
 * @param ignoreCase `true` to ignore character case when comparing characters. By default `false`.
 *
 * Two characters are considered the same ignoring case if at least one of the following is `true`:
 *   - The two characters are the same (as compared by the == operator)
 *   - Applying the method [toUpperCase] to each character produces the same result
 *   - Applying the method [toLowerCase] to each character produces the same result
 */
public fun Char.equals(other: Char, ignoreCase: Boolean = false): Boolean {
    if (this === other) return true
    if (!ignoreCase) return false

    if (this.toUpperCase() === other.toUpperCase()) return true
    if (this.toLowerCase() === other.toLowerCase()) return true
    return false
}

/**
 * Returns `true` if this character is a Unicode surrogate code unit.
 */
public fun Char.isSurrogate(): Boolean = this in Char.MIN_SURROGATE..Char.MAX_SURROGATE




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