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• How do I combine two rows of same part, but add quantities?

  - by Tom

  I have table "PICKITEM" PARTID QTY A 1 A 3 B 11 C 8 D 5 D 3 I need a select statement that will return one line for like PARTIDs and add the qty field to together, yet also return the rest of the lines in the table as is PARTID QTY A 4 B 11 C 8 D 8 Probably a newb question, but I am new to SQL syntax and queries. Any help in getting me on the right path would be appreciated!

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• C++, class as parameter to a method, not template.

  - by ra170

  So, I came across an interesting method signature that I don't quite understand, it went along the lines of: void Initialize(std::vector< std::string > & param1, class SomeClassName * p); what I don't understand is the "class" keyword being used as the parameter, why is it there? Is it necessary to specify or it is purely superficial?

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• How to "grep" out specific line ranges of a file

  - by Mike

  There are often times I'll grep -l whatev file to find what I'm looking for. Say the output is 1234: whatev 1 5555: whatev 2 6643: whatev 3 If I want to then just extract the lines between 1234 and 5555, is there a tool to do that? For static files I have a script that does wc -l of the file and then does the math to split it out with tail & head but that doesn't work out so well with log files that are constantly being written to.

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• possible to change a script when it is running?

  - by Daniel

  Suppose a script has 1000 lines, and the 10 line has a command takes a long time to run and when I find it is running line 10, I find I need to change line 100, is it possible to do that without stop the script first? We can also stop a process by using command pstop, but I don't know how to let the process to re-read the script and continue to run from where it paused.

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• How to increase mouse scroll wheel speed in NetBeans?

  - by smartj

  Loving the switch from Eclipse to NetBeans. Anyone know how to increase the number of lines scrolled using the mouse wheel in the editor window? Currently it only goes one at a time -- i'd like it to do at least three.

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• How to directly access a certain part of a text file in g++?

  - by Phenom

  I have a text file containing a number of records. Each record is stored on a single line that is 100 characters long. Let's say I want to directly access the nth record. I could do it using a for loop, reading in n lines until I get to the record. But how could I access it directly?

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• Variables combined with && and ||

  - by gcc

  What do the last lines mean? a=0; b=0; c=0; a && b++; c || b--; Can you vary this question to explain with more interesting example?

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• to count specific things within a c++ code

  - by ace

  i know this connects to my original question but i put it here so it is seen by people afresh. after passing each line of the code into a string, how can i count the following things: --the number of standalone functions and member functions per class --the number of lines per function?

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• PHP: A way for a file to have its own MD5 inside?

  - by Eli

  Hi all, In considering several possible solutions to a recent task, I found myself considering how to get a php file that includes it's own MD5 hash. I ended up doing something else, but the question stayed with me. Something along the lines of: <?php echo("Hello, my MD5 is [MD5 OF THIS FILE HERE]"); ?> Whatever placeholder you have in the file, the second you take its MD5 and insert it, you've changed it.

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• paragraph with vertical line on its left

  - by Flavius

  Hi What is the easiest way to have a paragraph with one or with two vertical black lines on its left? I have something like this so far: \newcommand{\attention}[1]{\begin{huge}!\end{huge} #1} But instead of a huge exclamation mark, I want a vertical line, whether the paragraph is one- or multi-line.

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• Python: How can I read in the characters from a line in a file and convert them to floats and strs, depending on if they are numbers or letters?

  - by user1467577

  I have a file that looks like: 1 1 C C 1.9873 2.347 3.88776 1 2 C Si 4.887 9.009 1.21 I would like to read in the contents of the file, line-by-line. When I only had numbers on the lines I used: for line in readlines(file): data = map(float, line.split) But this only works when all the elements of line.split are numbers. How can I make it store the letters as strings and the numbers as floats?

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• HttpContext returning only "/"

  - by user281180

  I have the following two lines of codes in my model, however, both virtual and path have values "\". Where have I gone wrong? var virtual = VirtualPathUtility.ToAbsolute(HttpContext.Current.Request.ApplicationPath); var path =HttpContext.Current.Request.ApplicationPath;

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• How to structure an application written in a functional language?

  - by fig-gnuton

  How is code commonly organized in FP applications? Along what lines do you separate files, modules, directories, etc.?

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• Multi-Dimensional Array and ArrayIndexOutOfBoundsException

  - by notset

  Hello, I have a strange problem which I can't fix: A field: private boolean[][][] gaps; Constructor (1st line): gaps = new boolean[NOBARRICADES][WIDTH][HEIGHT]; Constructor (2nd line): for (int i = 0; i < NOBARRICADES; i++) { JAVA throws an error for the 2nd line, saying: Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException Does it have anything to do with JAVA syntax (the mistake is in these lines of code) or I should look for the problem somewhere else?

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• Git: Add part of (changed) file to index *by line numbers*

  - by RobM

  Is there a git command to add differences within a range of line-numbers to the index? I want to be able to select lines in my editor and run a macro to add any changes in the selection to the index.

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• Python module shared between multiple products

  - by MattyW

  I'm working on a python class that is being shared between two products. 90% of the functionality applies to both products. For the 10% that's different the code is littered with this kind of thing: #Start of file project = 'B' #Some line of code if project == 'A': import moduleA elif project == 'B': import moduleB #Many lines of code if project == 'A': print moduleA.doA(2) elif project == 'B': print moduleB.doB(2) This doesn't seem very elegant or very readable, has anyone encountered this sort of thing before? Are there better ways of doing it?

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• Any wrapping viewgroup?

  - by user325737

  I am looking for Wrappable ViewGroup just like what TextView do. I need this for layout. This should be something like LinearLayout but wrappable to multiple lines. Or do I need something custom?

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• Dealing with errors during a copy from

  - by jlfenaux

  I've to import a file from an external source to a postgresql table. I tried to do it with \copy from , but I keep getting errors (additional columns) in the middle of the file. Is there a way to tell postgresql to ignore lines containing errors during a "\copy from" ? Thanks

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• Why is this span above the text? I want it beside the text.

  - by alex

  <td valign="center" colspan="2"> <a href="" class="table_desc" > <span class="desc_info_butt"></span> </a> text here </td> .desc_info_butt{ background:url(Description_Button.png) top left no-repeat; height:16px; width:16px; display:block; } For some reason, the image and text appear on two different lines!~

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• MySQL: How to do a conditional update?

  - by Tom

  Hi, I'm trying to a create an update statement along the following lines: TABLE car: id | owner_id | type | status An owner can have multiple cars. UPDATE car c SET c.type = 1 WHERE c.owner_id IN ($ids) AND c.status = [1 IF IT EXISTS, ELSE 0] $ids is reasonably small (under 50 values). It seems simple but I can't seem to get my head around it because I can't use a SELECT subquery with an UPDATE to the same table. Anyone? Thanks

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• Remove all arbitary spaces before a line in Vim

  - by Farslan

  I'v written a plugin where it comes to parsing a XML tag. The content inside the tag is indented and when i copy the parsed string into the file it's gettting like: Example line This is part of the parsed line Thats goes one End of line What I want is to remove all spaces in front of these lines, the final text should be Example line This is part of the parsed line Thats goes one End of line I've tried to use = but it doesn't work the way U want. How can I do that with minimal key strokes ?

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• How to access a (shadowed) global function in ruby.

  - by yngvedh

  Hi, I was wondering how to access a global function fn in ruby from a class which also defined a method fn. I have made a workaround by aliasing the function like so: def fn end class Bar alias global_fn fn def fn # how to access the global fn here without the alias global_fn end end I'm looking for something along the lines of c++'s :: to access global scope but I can't seem to locate any information about it. I guess I don't know specifically what I'm looking for.

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• Implement "tail -f" in C++

  - by Hamming

  Hi! I want to create a small code in C++ with the same functionality as "tail-f": watch for new lines in a text file and show them in the standard output. The idea is to have a thread that monitors the file Is there an easy way to do it without opening and closing the file each time?

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• Java: If I overwrite the .equals method, can I still test for reference equality with ==?

  - by shots fired

  I have the following situation: I need to sort trees based by height, so I made the Tree's comparable using the height attribute. However, I was also told to overwrite the equals and hashCode methods to avoid unpredictable behaviour. Still, sometimes I may want to compare the references of the roots or something along those lines using ==. Is that still possible or does the == comparison call the equals method?

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• Count of Sums possibly using group_by

  - by Daniel Johnson

  Say you have a user table and an order table which references user (user has_many orders) and contains an item count field. How could you efficiently ask "how many uses ordered how many items?" That is, to generate something along the lines of: Number of users | sum of items ------------------------------- 5 users | 1 item 4 users | 5 items 1 user | 7 items Thanks in advance.

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