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  • General Question about MD5

    - by chicane
    So im just playing around with PHP and the MD5 functionality, sorry if this sounds really silly, but I cant seem to understand, how is it possible to represent an unlimited number of characters of input into a 32 bit character output? Is my logic sound here? Or is there a limit to the input that a MD5 function can take? Thanks...

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  • Apply command to each line

    - by Alex
    Suppose I have some output from a command (such as ls -1): a b c d e ... I want to apply a command (say echo to each one, in turn). E.g. echo a echo b echo c echo d echo e ... What's the easiest way to do that in bash?

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  • How to log sql statements in grails

    - by damian
    Hi I want to log in the console or in a file, all the queries that Grails do, to check performance. I had configured [this][1] without success. Any idea would help. [1]: http://www.grails.org/FAQ#Q: How can I turn on logging for hibernate in order to see SQL statements, input parameters and output results?

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  • CPU ordering in Linux (with hyper threading)

    - by Jason
    I'm curious what the CPU ordering is in Linux. Say I bind a thread to cpu0 and another to cpu1 on a hyperthreaded system, are they both going to be on the same physical core. Given a Core i7 920 with 4 cores and hyperthreading, the output of /proc/cpuinfo has me thinking that cpu0 and cpu1 are different physical cores, and cpu0 and cpu4 are on the same physical core. Thanks.

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  • Unexpected variable update when using bash's $(( )) operator for arithmetic

    - by philo
    I'm trying to trim a few lines from a file. I know exactly how many lines to remove (say, 2 from the top), but not how many total lines are in the file. So I tried this straightforward solution: $ wc -l $FILENAME 119559 my_filename.txt $ LINES=$(wc -l $FILENAME | awk '{print $1}') $ tail -n $(($LINES - 2)) $FILENAME > $OUTPUT_FILE The output is fine, but what happened to LINES?? $ wc -l $OUTPUT_FILE 119557 my_output_file.txt $ echo $LINES 107 Hoping someone can help me understand what's going on.

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  • How to show Iplmage format on the GUI of C++ instead of showing it in another windows?

    - by Darren
    I'm trying to display the output image onto the C++ interface instead of creating another window to display the image. For example: cvNameWindow("Window A",0); cvShowImage("Window A", imgA); This will create an window and display the imgA on it. My question is that can i display my imgA onto my C++ interface together with all my other button and textbox. I'm using Borland C++ Builder 6 and OpenCV.

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  • When should I use print instead of echo in PHP?

    - by Rob
    I understand that echo is slightly faster, and print can be used as a function, but I've been reading an e-book on PHP, and the writer is using print, instead of echo, to output very simple text. print "Your name is $name\n"; So my question is, when would it be appropriate for me to use print as opposed to echo?

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  • Post and get at the same time in php

    - by user225269
    Do you have any suggestions with my problem. I need to use get and post at the same time. Get because I need to output what the user has typed. And post because I need to access the mysql database in relation to that input. It looks something like this: <form name="x" method="get" action="x.php"> <input name="year" type="text"> <select name="general" id="general"> <font size="3"> <option value="YEAR">Year</option> </form> This will output the contents of mysql depending on what the user will check: <form name="y" method="post" action"y.php"> <input name="fname" type="checkbox"> </form> And the form action of those two combined will look something like this: <?php if($_POST['general'] == 'YEAR'){ ?> <?php echo $_GET["year"]; ?> <?php $result2 = mysql_query("SELECT * FROM student WHERE student.YEAR='$syear'"); ?> <table border='1'> <tr> <?php if ( $ShowLastName ) { ?><th>LASTNAME</th><?php } ?> <?php if ( $ShowFirstName ) { ?><th>FIRSTNAME</th><?php } ?> </tr> <?php while ( $row = mysql_fetch_array($result2) ) { if (!$result2) { } ?> <tr> <td><?php echo $row['IDNO']?> </td> <td><?php echo $row['YEAR'] ?> </td> <?php if ( $ShowLastName ) { echo('<td>'.$row['LASTNAME'].'</td>'); } ?></td> <?php if ( $ShowFirstName ) { echo('<td>'.$row['FIRSTNAME'].'</td>'); } ?> I really get lots of undefined errors when I do this. What can you recommend that I should do in order to get the value inputted by the user together with the mysql data.

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  • Java OCR Help Needed

    - by maSnun
    Hello, How do I detect all the characters in an image? The image is in png and the font is constant. For simplicity, lets assume that the image has only numeric digits and there are only 4 digits on an image. I need to read all of them and output the text. Can you help? Thanks in advance.

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  • Help with float numbers in Java

    - by Alvin
    Hi, Could anyone please me why the output of the following programme is not " different different"? public static void main(String[] args) { float f1=3.2f; float f2=6.5f; if(f1==3.2) System.out.println("same"); else System.out.println("different"); if(f2==6.5) System.out.println("same"); else System.out.println("different"); } o/p :different same

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  • Grep for 2 words after pattern found

    - by Dileep Ch
    The scenario is i have a file and contains a string "the date and time is 2012-12-07 17:11:50" I had searched and found a command grep 'the date and time is' 2012-12-07.txt | cut -d\ -f5 it just displays the 5th word and i need the combination of 5th and 6th, so i tried grep 'the date and time is' 2012-12-07.txt | cut -d\ -f5 -f6 But its error. Now, how to grep the 5th and 6th word with one command I just need the output like 2012-12-07 17:11:50

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  • What does plus sign does here in string?

    - by Thanga
    I would like to know, what is the difference between two statements, these may be simple String ss="myname"; char[] charArray = ss.toCharArray(); for ( char character : charArray ) { System.out.println( +character );//Statements are here what does plus refers here: System.out.println( character ); //Statements are here: } I got the output for the code no errors but little doubt on how it works? What happens here? If you would down vote let me know the reason please , Thanks in advance

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  • Prevent <xsi:nil="true"> on Nullable Value Types when Serializing to XML.

    - by Nat Ryall
    I have added some nullable value types to my serializable class. I perform a serialization using XmlSerializer but when the value is set to null, I get an empty node with xsi:nil="true". This is the correct behaviour as I have found here: http://msdn.microsoft.com/en-us/library/ybce7f69%28VS.80%29.aspx Is there a way to switch off this option so that nothing is output when the value type is null?

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  • Unit Test Sessions Window Closes when debugging

    - by Daniel Dyson
    When I select an NUnit test in the Unit Test Sessions window and click debug, the window disappears. My breakpoints are hit, but if I hit F5, the Unit Test Sessions window does not return until the test returns a result or I stop the debugging session. This is preventing me from viewing any console output during tests. Any ideas?

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  • How to initialize log4j properly?

    - by Janusz
    After adding log4j to my application I get the following output every time I execute my application: log4j:WARN No appenders could be found for logger (slideselector.facedata.FaceDataParser). log4j:WARN Please initialize the log4j system properly. It seems this means a configuration file is missing. Where should this config file be located and what is a good start content? I'm using plain java for developing a desktop application. So no webserver etc...

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  • wmi - Drive letter

    - by new
    \NJ96\root\cimv2:Win32_PnPEntity.DeviceID="USB\VID_1A8D&PID_1000\35809402 0874450" i can able to get the vendor id and product id of the usb device plugged into my device using WMI . how can i map DRIVE LETTER to my above output using the WMI please help me out

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  • Fluid images - portrait/landscape

    - by Richard
    I have a simple slideshow (list items) but a combination of portrait and landscape images. I'm working on a fluid grid so everything is, essentially, 100% of itself. I'm wondering if there's a way for all the images to remain the same height, but the widths stay true to their proportions. All the images have the same height - 2000px - when uploaded. See the site here: http://goo.gl/BdFUj See here for the desired output: http://d.pr/i/HJUH Thanks, R

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  • net.sf.json.JSONObject adds backslashes where it's not expected ?

    - by cx42net
    Hi there, I'm loosing my hair trying to figure out why net.sf.json.JSONObject add extra backslash where it shouldn't on my java code : JSONObject obj = new JSONObject (); obj.element ("column_name", "<a href=\"#\" title=\"test\">Test !</a>"); will output : <a href=\"#\" title=\"test\">Test !<\/a> with an extra "\" near <\/a. How can I avoid this behavior ? Thanks for your help !

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