samples/for_each.js

changeset 0
b1a7da25b547
child 962
ac62e33a99b0
     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/samples/for_each.js	Wed Apr 27 01:36:41 2016 +0800
     1.3 @@ -0,0 +1,66 @@
     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 supports for..each extension supported
    1.36 +// by Mozilla. See also
    1.37 +// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/for_each...in
    1.38 +
    1.39 +var strs = [ "hello", "world" ];
    1.40 +for each (str in strs)
    1.41 +    print(str);
    1.42 +
    1.43 +// create a java int[] object
    1.44 +var JArray = Java.type("int[]");
    1.45 +var arr = new JArray(10);
    1.46 +
    1.47 +// store squares as values
    1.48 +for (i in arr) 
    1.49 +    arr[i] = i*i;
    1.50 +
    1.51 +// for .. each on java arrays
    1.52 +print("squares");
    1.53 +for each (i in arr)
    1.54 +    print(i);
    1.55 +
    1.56 +var System = Java.type("java.lang.System");
    1.57 +
    1.58 +// for..each on java Iterables
    1.59 +// print System properties as name = value pairs
    1.60 +print("System properties");
    1.61 +for each (p in System.properties.entrySet()) {
    1.62 +    print(p.key, "=", p.value);
    1.63 +} 
    1.64 +
    1.65 +// print process environment vars as name = value pairs
    1.66 +print("Process environment");
    1.67 +for each (e in System.env.entrySet()) {
    1.68 +    print(e.key, "=", e.value);
    1.69 +}

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