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package.scala
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package.scala
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/*
* Copyright 2017-2020 Marconi Lanna
*
* 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.
*/
package scail.commons
import scala.util.control.NonFatal
package object util {
/**
* Exception handler that returns a default value if a non-fatal exception is thrown.
*
* @example {{{
* val result = defaultsTo("") {
* "abc".substring(4)
* }
* }}}
*
* @param default the default value to return when a non-fatal exception is caught
* @param exp the expression to be evaluated
* @tparam A the type of the default return value
* @return the evaluation of `exp` if no exception is thrown,
* `default` if a non-fatal exception was thrown
*/
def defaultsTo[A](default: => A)(exp: => A): A = {
try exp catch {
case NonFatal(_) => default
}
}
}