samples/call_lambda.js

changeset 0
b1a7da25b547
child 962
ac62e33a99b0
     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/samples/call_lambda.js	Wed Apr 27 01:36:41 2016 +0800
     1.3 @@ -0,0 +1,45 @@
     1.4 +/*
     1.5 + * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
     1.6 + * 
     1.7 + * Redistribution and use in source and binary forms, with or without
     1.8 + * modification, are permitted provided that the following conditions
     1.9 + * are met:
    1.10 + * 
    1.11 + *   - Redistributions of source code must retain the above copyright
    1.12 + *     notice, this list of conditions and the following disclaimer.
    1.13 + * 
    1.14 + *   - Redistributions in binary form must reproduce the above copyright
    1.15 + *     notice, this list of conditions and the following disclaimer in the
    1.16 + *     documentation and/or other materials provided with the distribution.
    1.17 + * 
    1.18 + *   - Neither the name of Oracle nor the names of its
    1.19 + *     contributors may be used to endorse or promote products derived
    1.20 + *     from this software without specific prior written permission.
    1.21 + * 
    1.22 + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
    1.23 + * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
    1.24 + * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
    1.25 + * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
    1.26 + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
    1.27 + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
    1.28 + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
    1.29 + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
    1.30 + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
    1.31 + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
    1.32 + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    1.33 + */
    1.34 +
    1.35 +// nashorn allows you treat every Java8 lambda as a function
    1.36 +
    1.37 +var JFunction = Java.type("java.util.function.Function");
    1.38 +var obj = new JFunction() {
    1.39 +    apply: function(x) {
    1.40 +        print(x + ", lambda");
    1.41 +    }
    1.42 +};
    1.43 +
    1.44 +// prints 'function'
    1.45 +print(typeof obj);
    1.46 +
    1.47 +// call it!
    1.48 +obj("hello");

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