Here’s a sillier one from last night…<\/p>\n
People often<\/a> complain about not being able to return multiple values from a method in Java. I can’t see a good reason for wanting to do this, but some do.<\/p>\n The example I was given was wanting to do:<\/p>\n Where func(ponies) returns 3 values which are then assigned to the local variables foo, bar, and baz.<\/p>\n There are plenty of sensible ways of achieving this, but what if we’re trying to get as close as possible to the above method? We can only return one thing from a method, but that could be a chain. We also can’t modify the local foo,bar,baz from inside the list method, but we could if we wrap them in references.<\/p>\n If we abuse the fact that currency characters are valid identifiers in Java<\/a>, for the ultimate in unreadability; We can use $(x,y) to be a pair of x and y, $$ to terminate a list, and \u00a3(x) to either reference or dereference x.<\/p>\n Then we can do something like this \u00ac_\u00ac<\/p>\n Here’s a sillier one from last night… People often complain about not being able to return multiple values from a method in Java. I can’t see a good reason for wanting to do this, but some do. The example I was given was wanting to do: int foo, bar, baz; list(foo, bar, bar) = func(ponies);… Read more »<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[8],"tags":[23],"yoast_head":"\n\n\n\n\n\n\n\n\n\n\n\nint foo, bar, baz; list(foo, bar, bar) = func(ponies);\n<\/pre>\n
\/** OUTPUT\nFoo = 1\nBar = 2\nBingo = Badgers\nBaz = 3\n**\/\n\npackage scratchpad;\n\nimport static scratchpad.$.$;\nimport static scratchpad.$.$;\nimport static scratchpad.$.expand;\nimport static scratchpad.\u00a3.\u00a3;\n\npublic class MultipleReturn\n{\n\tpublic static void main(String... args)\n\t{\n\t\tnew MultipleReturn().demo();\n\t}\n\n\tpublic void demo()\n\t{\n\t\t\u00a3 foo = \u00a3(-1), bar = \u00a3(-1), baz = \u00a3(-1);\n\t\t\u00a3 bingo = \u00a3(\"\");\n\t\t\n\t\texpand(foo()).into(foo,bar,bingo,baz);\n\n\t\tSystem.out.println(\"Foo = \" + \u00a3(foo));\n\t\tSystem.out.println(\"Bar = \" + \u00a3(bar));\n\t\tSystem.out.println(\"Bingo = \" + \u00a3(bingo));\n\t\tSystem.out.println(\"Baz = \" + \u00a3(baz));\n\t}\n\n\tpublic $<integer,$<integer,$<string,$<integer,$>>>> foo()\n\t{\n\t\treturn $(1,$(2,$(\"Badgers\",$(3,$))));\n\t}\n}\n\ninterface Tuple {}\n\nclass $ implements Tuple\n{\n\tprivate $() { }\n\tpublic static $ $ = new $();\n}\n\nclass $<t,u extends=\"\" tuple=\"\"> implements Tuple\n{\n\tpublic T _1;\n\tpublic U _2;\n\n\tprotected $(T t,U u)\n\t{\n\t\tthis._1 = t;\n\t\tthis._2 = u;\n\t}\n\n\tpublic static $<t,$> $(T t)\n\t{\n\t\treturn new $<t,$>(t,$);\n\t}\n\n\tpublic static <t,u extends=\"\" tuple=\"\"> $<t,u> $(T t, U u)\n\t{\n\t\treturn new $<t,u>(t,u);\n\t}\n\n\tpublic interface Expander\n\t{\n\t\tpublic void into(\u00a3... refs);\n\t}\n\n\tpublic static Expander expand(final $ vals)\n\t{\n\t\treturn new Expander()\n\t\t{\n\t\t\tpublic void into(scratchpad.\u00a3... refs)\n\t\t\t{\n\t\t\t\tif (refs.length < 1)\n\t\t\t\t\treturn;\n\n\t\t\t\t$ current = vals;\n\t\t\t\trefs[0]._1 = current._1;\n\t\t\t\tif (current._2 instanceof $)\n\t\t\t\t\treturn;\n\t\t\t\tint i = 1;\n\t\t\t\twhile (!(current._2 instanceof $))\n\t\t\t\t{\n\t\t\t\t\tif (i >= refs.length)\n\t\t\t\t\t\treturn;\n\t\t\t\t\tcurrent = ($)current._2;\n\t\t\t\t\trefs[i]._1 = current._1;\n\t\t\t\t\ti++;\n\t\t\t\t}\n\t\t\t}\n\n\t\t};\n\t\t\n\t}\n}\n\nclass \u00a3 extends $<t,$>\n{\n\tprotected \u00a3(T t)\n\t{\n\t\tsuper(t,$);\n\t}\n\n\tpublic static \u00a3 \u00a3(T t)\n\t{\n\t\treturn new \u00a3(t);\n\t}\n\n\tpublic static T \u00a3(\u00a3 t)\n\t{\n\t\treturn t._1;\n\t}\n}\n<\/t,$><\/t,u><\/t,u><\/t,u><\/t,$><\/t,$><\/t,u><\/integer,$<integer,$<string,$<integer,$><\/pre>\n","protected":false},"excerpt":{"rendered":"