Boost Geometry doesn't copy the attributes of my custom point class

I am attempting to use Boost Geometry with a custom vertex class that has x,y and many parameters for rendering such as texture coordinates. I registered the custom class using BOOST_GEOMETRY_REGISTER_POINT_2D and the algorithms such as union_ work but only x,y are valid. (I am a C++ veteran but have never learned generic programming.) I can demonstrate the problem when I take an instance of my vertex and use boost::geometry::append( boostPolygon, myVertex );

I can trace the append call in the debugger and I see that a default constructed instance of my vertex is being created and then the accessors of my vertex class are being called to copy the x, and y values leaving all the rest of the parameters as set in the default constructor.

What I really want is for boost::geometry::append() to behave exactly like boostPolygon.outer().push_back( myVertex); So I replaced the append call with the above push_back and it added the points to the polygon as I wanted but then when I called union_() on the polygons they lost all the members other than x and y again.

I figure that what I want is a typical use-case so it is best to ask rather than guess how to handle this. I've seen the examples of how to adapt a class but my template kung-fu isn't enough to follow along. So do I need to add more adaption or is there something simple I need to do?

Scott

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Java 8 stream processing not fluent

I have a problem with Java 8 streams, where the data is processed in sudden bulks, rather than when they are requested. I have a rather complex stream-flow which has to be parallelised because I use concat to merge two streams.

My issue stems from the fact that data seems to be parsed in large bulks minutes - and sometimes even hours - apart. I would expect this processing to happen as soon as the Stream reads incoming data, to spread the workload. Bulk processing seems counterintuitive in almost every way.

My input is a Spliterator of unknown size and I use a forEach as the terminal operation.

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Background of user control hide the controls inside of him

http://ift.tt/1NmaMtn

I Have user control i set him background, but the problem is that the background hide the controls inside of him

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EasyMock record phase mock as argument

Is it possibile with EasyMock during the register phase to register a method call whose arguments is a mock? E.g:

String s = 'a string';

ClassA a = createMock(ClassA.class);
ClassB b = createMock(ClassB.class);
ClassC c = createMock(ClassC.class);

expect(c.bFactoryMethod()).andReturn(b);
a.someMethod(s, b);
replayAll();

ClassToTest toTest = new ClassToTest();
toTest.wrapperMethodThatCallsSomeMethod(s);
verifyAll();

EasyMock complains about:

java.lang.IllegalStateException: missing behavior definition for the preceding method call

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how to retrieve LogCat data after use Log.d(); statement as we get logcat information earlier

I have just used Log.d(); statement to debug my app and for this I created a filter configuration. I got it working so that it shows the feedback.

But Now I deleted this Log.d(); from my app. But I can't access the Logcat Information as I got earlier. It's not a error. I just want to get my logcat as I used before Log.d(); statement.

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Encountered the symbol "DECLARE" and Encountered the symbol "end-of-file"

I'm following a tutorial from Oracle, and in the last step I'm trying to execute a SQL script where I get the errors from DECLARE and end-of-file. Any idea where I went wrong? The following is the script:

create or replace
PROCEDURE ENQUEUE_TEXT(
 payload IN VARCHAR2 )
AS
 enqueue_options DBMS_AQ.enqueue_options_t;
 message_properties DBMS_AQ.message_properties_t;
 message_handle RAW (16);
 user_prop_array SYS.aq$_jms_userproparray;
 AGENT SYS.aq$_agent;
 header SYS.aq$_jms_header;
 MESSAGE SYS.aq$_jms_message;
BEGIN
 AGENT := SYS.aq$_agent ('', NULL, 0);
 AGENT.protocol := 0;
 user_prop_array := SYS.aq$_jms_userproparray ();
 header := SYS.aq$_jms_header (AGENT, '', 'aq1', '', '', '', user_prop_array);
 MESSAGE := SYS.aq$_jms_message.construct (0);
 MESSAGE.set_text (payload);
 MESSAGE.set_userid ('Userid_if_reqd');
 MESSAGE.set_string_property ('JMS_OracleDeliveryMode', 2);
 --(header, length(message_text), message_text, null);
 DBMS_AQ.enqueue (queue_name => 'userQueue', enqueue_options => enqueue_options,
message_properties => message_properties, payload => MESSAGE, msgid => message_handle );
 COMMIT;
END ENQUEUE_TEXT;
DECLARE
  PAYLOAD varchar2(200);
BEGIN
  PAYLOAD := 'Hello from AQ !';
  ENQUEUE_TEXT(PAYLOAD => PAYLOAD);
END;

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int or float to represent numbers that can be only integer or "#.5"

Situation

I am in a situation where I will have a lot of numbers around about 0 - 15. The vast majority are whole numbers, but very few will have decimal values. All of the ones with decimal value will be "#.5", so 1.5, 2.5, 3.5, etc. but never 1.1, 3.67, etc.

I'm torn between using float and int (with the value multiplied by 2 so the decimal is gone) to store these numbers.

Question

Because every value will be .5, can I safely use float without worrying about the wierdness that comes along with floating point numbers? Or do I need to use int? If I do use int, can every smallish number be divided by 2 to safely give the absolute correct float?

Is there a better way I am missing?

Other info

I'm not considering double because I don't need that kind of precision or range.

I'm storing these in a wrapper class, if I go with int whenever I need to get the value I am going to be returning the int cast as a float divided by 2.

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