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• How to transform phrases and words into MD5 hash?

  - by brilliant

  Can anyone, please, explain to me how to transform a phrase like "I want to buy some milk" into MD5? I read Wikipedia article on MD5, but the explanation given there is beyond my comprehension: "MD5 processes a variable-length message into a fixed-length output of 128 bits. The input message is broken up into chunks of 512-bit blocks (sixteen 32-bit little endian integers)" "sixteen 32-bit little endian integers" is already hard for me. I checked the article on little endians and didn't understand a bit. However, the examples of some phrases and their MD5 hashes are very nice: MD5("The quick brown fox jumps over the lazy dog") = 9e107d9d372bb6826bd81d3542a419d6 MD5("The quick brown fox jumps over the lazy dog.") = e4d909c290d0fb1ca068ffaddf22cbd0 Can anyone, please, explain to me how this MD5 algorithm works on some very simple example? And also, perhaps you know some software or a code that would transform phrases into their MD5. If yes, please, let me know.

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• Execute C++ exe from C# form using Process.start()

  - by Dan

  Hi, I'm trying to create a C# form app that will allow me to use all of my previous C++ programs from one central program. I'm able to open the exes with Process.start, however it does not compile the code correctly. Example code: Process.Start("C:\\Documents and Settings\\dan\\Desktop\\test.exe"); This will bring up the console and act like it's running, but it does not run like when I normally compile out of the C++ editor. Is there a startinfo variable I need to set to signify that it's a c++ program or something along that line? Also, is there any way to execute a C++ program using process.start that will allow me to pass it variables through the command line via argc and argv? Thanks

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• search array and get array key

  - by SoulieBaby

  Hi all, I have an array, which I'd like to search for a value in and retreive the array key if it exists, but not sure how to even go about doing that. Here's my array: Array ( [hours] => Array ( [0] => 5 [1] => 5 [2] => 6 [3] => 6 [4] => 8 [5] => 10 ) ) So I'd like to search the hours array for 10, if 10 exists in the array, I want the key (5) to be returned. If that makes sense? Am trying to do it dynamically so the search string (10) will change, but I figure if I can get it working for number 10, I can get it working with a variable number :)

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• Textarea for my web application

  - by Parhs

  Hello ... I am developing an application web based which would let the users extend a part of an applcation using javascript via java.scripting http://java.sun.com/javase/6/docs/technotes/guides/scripting/programmer_guide/index.html The problem is that the user should write only some coditions and i want if possible to colour some special words and to check while typing if the variable that the user is typing exists.. Like a auto suggest thing... I searched at the web but didnt find many stuff. For WYSIWYG editors i couldnt determine if you can programaticcaly apply stuff and set/get caret position. Also i show that autosuggest is nearly impossible. It should be locatted outside of the textbox area.

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• Build XML document using Linq To XML

  - by JasonDR

  Given the following code: string xml = ""; //alternativley: string xml = "<people />"; XDocument xDoc = null; if (!string.IsNullOrEmpty(xml)) { xDoc = XDocument.Parse(xml); xDoc.Element("people").Add( new XElement("person", "p 1") ); } else { xDoc = new XDocument(); xDoc.Add(new XElement("people", new XElement("person", "p 1") )); } As you can see, if the xml variable is blank, I need to create the rood node manually, and append the person the root node, whereas if it is not, I simple add to the people element My question is, is there any way to generically create the document, where it will add all referenced node automatically if they do not already exists?

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• Make a c# / wpf event fire only once?

  - by Donnie

  I have a case where I want a given event to execute once, and only once. I'm trying to do it this way, but I'm having prolems (else I wouldn't be asking). Note that the following code is inside the function that decides that the event needs to be fired. EventHandler h = delegate(Object sender, EventArgs e) { FiringControl.TheEvent -= h; // <-- Error, use of unassigned local variable "h" // Do stuff } FiringControl.TheEvent += h; In general this should work because of the way scope is preserved for delegates until after they're done running, but, since h is in the process of being built when I try to use it it is still considered to be "uninitialized", apparently.

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• Adding a drop down menu with jquery

  - by Pete Herbert Penito

  Hi everyone! Here's the situation I have a webpage which has one drop down called prefer. I wanted the user to be able to choose one option and then have a link next to it called "Add" which generates another textbox with the same options, i was going to use jquery to show an additional drop down. But if possible I wanted to put the select box in an array and then loop through this process infinitely. so I could call select name="prefer[]" and somehow put in a variable which increases. Afterwards, I could use php to cycle through the array and utilize each one. Could I do this with Javascript somehow?

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• How can I enable Pascal casing by default when using Jackson JSON in Spring MVC?

  - by bhilstrom

  I have a project that uses Spring MVC to create and handle multiple REST endpoints. I'm currently working on using Jackson to automatically handle the seralization/deserialization of JSON using the @RequestBody and @ResponseBody annotations. I have gotten Jackson working, so I've got a starting point. My problem is that our old serialization was done manually and used Pascal casing instead of Camel casing ("MyVariable" instead of "myVariable"), and Jackson does Camel casing by default. I know that I can manually change the name for a variable using @JsonProperty. That being said, I do not consider adding "@JsonProperty" to all of my variables to be a viable long-term solution. Is there a way to make Jackson use Pascal casing when serializing and deserializing other than using the @JsonProperty annotation?

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• Delphi Unicode String Type Stored Directly at its Address

  - by Andreas Rejbrand

  I want a string type that is Unicode and that stores the string directly at the adress of the variable, as is the case of the (Ansi-only) ShortString type. I mean, if I declare a S: ShortString and let S := 'My String', then, at @S, I will find the length of the string (as one byte, so the string cannot contain more than 255 characters) followed by the ANSI-encoded string itself. What I would like is a Unicode variant of this. That is, I want a string type such that, at @S, I will find a unsigned 32-bit integer containing the length of the string in bytes (or in characters, which is half the number of bytes) followed by the Unicode representation of the string. I have tried WideString, UnicodeString, and RawByteString, but they all appear only to store an adress at @S, and the actual string somewhere else (I guess this has do do with reference counting and such). I suspect that there is no built-in type to use, and that I have to come up with my own way of storing text the way I want (which actually is fun). Am I right?

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• sys.stdout not reassigning to sys.__stdout__

  - by Vince

  I'm pretty new to Python so I am still just learning the language. One of the things I came across was reassigning sys.stdout to change the default output of print. So I wrote this as a test: import sys sys.stdout = open('log.txt','a') print('hey') sys.stdout.close() sys.stdout = sys.__stdout__ print('hi') Now the string 'hi' is not written to the file but it does not show in the default output either. When I assign some other variable to sys.stdout in the beginning and change it back it works, but I'm just wondering why its not changing back the first time.

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• PHP Mail $to multiple recipients from database table

  - by Alok Jethanandani

  <?php include("admin/db.php"); $recipients = "SELECT * FROM recipients ORDER BY id DESC"; $email_list = $db->query($recipients); foreach($email_list as $row) { echo $row['email'].","; } $to = "?"; ?> Above I have a comma delimitated list of emails which I need to insert into the $to variable. How do I do this?

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• UIAlertController handle dismiss upon click outside (IPad)

  - by Tomer Peled

  Previous to iOS8 we used the UIActionSheet for showing alert and now we need to use the UIAlertController. When we used the UIActionSheet we could easily handle situations where the user clicked outside the pop up (which means he want to cancel the operation) by comparing the clickedButtonAtIndex to the cancelButtonIndex - if the user indeed pressed outside the popup we got the cancel button index in this function. How can we handle these situations with the new UIAlertController? I tried to use the "completion" block but it doesn't have any context. Is there an easy way to handle this? (other than "saving" the actions states in some general variable).

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• Annotations (@EJB, @Resource, ...) within a RESTful Service

  - by Dominik

  Hi! I'm trying to inject a EJB within my RESTful Service (RESTEasy) via Annotations. public class MyServelet implements MyServeletInterface { ... @EJB MyBean mybean; ... } Unfortunately there is no compilation or AS error, the variable "mybean" is just null and I get a NullPointerException when I try to use it. What I'm doing wrong? Here are some side-informations about my architecture: JBoss 4.2.2.GA Java version: 1.5.0_17 local MDB-Project remote EJB-Project WAR Project with the RESTful Service which uses the remote EJB and sends messages to the local MDB-Project Thanks in advance! br Dominik p.s: everything is working fine when I use normal context lookup.

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• Setting a cookie before Javascript Redirection

  - by Jason

  Hello, I have a Rails app where I set a set a session variable the moment a user lands on my site with the referer and the page they hit. Additionally, I have Google Optimizer sending traffic from my homepage to various landing pages. The problem is that I think Google Optimizer is sending users away before the cookie is set. Is that even possible? I believe that the cookie is set from the HTTP Header, which must have fully loaded before Google's Javascript has even loaded. Thanks, Jason

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• Static initializer in Java

  - by Szere Dyeri

  My question is about one particular usage of static keyword. It is possible to use static keyword to cover a code block within a class which does not belong to any function. For example following code compiles: public class Test { private static final int a; static { a = 5; doSomething(a); } private static int doSomething(int x) { return (x+5); } } If you remove the static keyword it complains because the variable a is final. However it is possible to remove both final and static keywords and make it compile. It is confusing for me in both ways. How am I supposed to have a code section that does not belong to any method? How is it possible to invoke it? In general, what is the purpose of this usage? Or better, where can I find documentation about this?

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• Are primitive types garbage collected in Android?

  - by snctln

  I know this may be a dumb question, but my background is more in c++ and managing my own memory. I am currently cutting down every single allocation that I can from one of my games to try and reduce the frequency of garbage collection and perceived "lag", so for every variable that I create that is an Object (String and Rect for example) I am making sure that I create it before hand in my constructor and not create temporary variables in simple 10 line functions... (I hope that makes sense) Anyways I was working though it some more tonight and I realized that I may be completely wrong about my assumption on garbage collection and primitive types (int, boolean, float) are these primitive type variables that I create in a 10 line function that gets called 20 times a second adding to my problem of garbage collection? So a year ago every few seconds I would see a message in logcat like GC freed 4010 objects / 484064 bytes in 101ms Now I see that message every 15-90 seconds or so... So to rephrase my question: Are primitive types (int, float, boolean, etc) included when seeing this message?

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• iPhone SDK. How to assign NSString to UILabel text ?

  - by Del

  If I have a class/object like this #import <Foundation/Foundation.h> @interface anObject : NSObject { NSString *aProp; } @property NSString aProp; @end and in the cellForRowAtIndexPath method i want to assign one of the string values from its properties to a uilabel of a tableviewcell, how do i do it? I've tried this but it doesn't work [[cell topLabel] setText:(NSString *)anObject.aProp]; Putting a breakpoint on the above line and inspecting it, the debugger says "variable is not a CFString Casting the property to a CFString doesnt work Modifying the class and declaring the property as a CFStringRef doesnt work either

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• Problems with animateAlong in IE7

  - by Andrei

  Hi there, I'm having trouble making a simple shape move along a path in IE7 (the only version of IE I tried, actually). The following code works fine in chrome and firefox, but not IE. I couldn't find an obvious reason, has anybody seen something similar? canvas.path(rPath.path).attr("stroke", "blue"); var circle = canvas.circle(rPath.startX, rPath.startY, 5); circle.animateAlong(rPath.path, 3000, true); My rPath variable has the path and the starting point coordinates. Microsoft script debugger points to this line as the one where the code breaks: os.left != (t = x - left + "px") && (os.left = t); (line 2131 inside the uncompressed raphael.js script file, inside Element[proto].setBox = function (params, cx, cy) {...}) Any ideas? Any experience (good or bad) with raphael's animateAlong in IE7? TIA, Andrei

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• "possible loss of precision" is Java going crazy or I'm missing something?

  - by Lo'oris

  I'm getting a "loss of precision" error when there should be none, AFAIK. this is an instance variable: byte move=0; this happens in a method of this class: this.move=(this.move<<4)|(byte)(Guy.moven.indexOf("left")&0xF); move is a byte, move is still a byte, and the rest is being cast to a byte. I get this error: [javac] /Users/looris/Sviluppo/dumdedum/client/src/net/looris/android/toutry/Guy.java:245: possible loss of precision [javac] found : int [javac] required: byte [javac] this.move=(this.move<<4)|(byte)(Guy.moven.indexOf("left")&0xF); [javac] ^ I've tried many variations but I still get the same error. I'm now clueless.

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• Birt 2.5.2 report generates empty table data when run from a cron job

  - by Trueblood

  I've got a shell script that runs genReport.sh in order to create a .pdf formatted report, and it works perfectly when it's run from the command line. The data source for the report is a ClearQuest database. When it's run from a CRON job the .pdf file is created, except that only the various report and column headers are displayed, and the data of the report is missing. There are no errors reported to STDERR during the execution of the script. This screams "environment variable" to me. Currently, the shell script is defining the following: CQ_HOME BIRT_HOME ODBCINI ODBCINST LD_LIBRARY_PATH If it's an environmental thing, what part of the environment am I missing?

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• How to get XDebug working on Mac command line PHP

  - by Eugene M

  I recently installed Zend Server Community Edition on a Mac with Snow Leopard. I can't get XDebug to work ... it shows up in the output for phpinfo from a web browser, but when I var_dump() a variable, there is no special output, and when I run phpunit, code coverage reports aren't generated. Also when I type php -m at the command line, there is nothing for XDebug. I suspect that it's because the Mac is running the executable of PHP that was bundled with it instead of the executable of PHP that came with the Zend Server install. When I type /usr/local/zend/bin/php -m, XDebug does show up. I followed the instructions at http://akrabat.com/php/some-notes-on-zend-server-ce-for-mac-os-x/. Also I downloaded the xdebug.so from the Komodo web site. Zend Debugger and all other Zend extensions are disabled. So how can I get XDebug working correctly?

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• Why is OnDragEnter not called?

  - by Harvey

  I have added the COleDropTarget variable to my view class, Registered it in the OnCreate(), which is being called at startup. I added the OnDragEnter and OnDrop virtual functions (not the others yet, as OnDragLeave). But they are not called when I drag (or drop) a piece of text over them. I just happened to think about the fact that I had already implemented the dropfiles function to the same window. Is this preventing the text drag? What else do I need? TIA, Harvey

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• How to use variables with regex?

  - by dontoo

  This is the input string: 23x^45*y or 2x^2 or y^4*x^3. I am matching ^[0-9]+ after letter x. In other words I am matching x followed by ^ followed by numbers. Problem is that I don't know that I am matching x, it could be any letter that I stored as variable in my char array. For example: foreach (char cEle in myarray) // cEle is letter in char array x, y, z, ... { match CEle in regex(input) //PSEUDOCODE } I am new to regex and I new that this can be done if I define regex variables, but I don't know how.

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• Empty accessors do matter? Regarding value types and their modification

  - by Petr

  Hi, I have following code that does not work due to "a" being a value typed. But I thought it would not work even without accessors, but it did: class Program { a _a //with accessors it WONT compile { get; set; } static void Main(string[] args) { Program p = new Program(); p._a.X = 5; //when both accessors are deleted, compiler does not //complain about _a.X not being as variable } } struct a { public int X; } It does not work as "a" is struct. But when I delete accessors from "_a" instance, it works. I do not understand why. Thanks

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• Constructing an object and calling a method without assignment in VB.Net

  - by mdryden

  I'm not entirely sure what to call what C# does, so I haven't had any luck searching for the VB.Net equivalent syntax (if it exists, which I suspect it probably doesn't). In c#, you can do this: public void DoSomething() { new MyHelper().DoIt(); // works just fine } But as far as I can tell, in VB.Net, you must assign the helper object to a local variable or you just get a syntax error: Public Sub DoSomething() New MyHelper().DoIt() ' won't compile End Sub Just one of those curiosity things I run into from day to day working on mixed language projects - often there is a VB.Net equivalent which uses less than obvious syntax. Anyone?

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