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• Using PHP to populate a <select></select> ?

  - by Flins

  <select name="select"> </select> I want to populate the above tag with values from database. I have written php code up to this. while($row=mysql_fetch_array($result)) { } $row is fetching fetching correct values.. how to add it to the <select> please help... Am new to programming

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• Entities equals() - hashcode() - toString(). How to correctly implement them?

  - by spike07

  I'm implementing equals() - hashcode() - toString() of my Entities using all the available fields in the bean. I'm getting some Lazy init Exception on the frontend when I try to compare the equality or when I print the obj state. That's because some list in the entity can be lazy initialized. I'm wondering what's the correct way to for implementing equals() and toString() on an Entity Obj

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• -1 - An error has occurred. It was not possible to copy the selected file.

  - by lala

  May I know what would be the possible reasons for this when I tried to install the component? I'm pretty sure my xml and install.php file is correct. Thanks.

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• Go - Raise an exception

  - by nevalu

  I would want to raise an exception as it's made in Python or Java --to finish the program with an error message--. An error message could be returned to a parent function: func readFile(filename string) (content string, err os.Error) { content, err := ioutil.ReadFile(filename) if err != nil { return "", os.ErrorString("read " + filename + ": " + err) } return string(content), nil } but I want that it can be finished when the error is found. Would be correct the next one? func readFile(filename string) (content string) { content, err := ioutil.ReadFile(filename) defer func() { if err != nil { panic(err) } }() return string(content) }

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• ActionScript - how to traverse objects?

  - by Ehmad11

  Hey i wanna do something like this: i=2; _root.("process" + i)._x = var_Process_Pos_x; how it is possible?, correct syntax please.

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• help for splitting a string in javascript

  - by Hero

  Hi everyone... I'd asked a question about the splitting the a string like below: Input string: "a=aa| b=b||b | c=cc" and the output: a=aa b=b||b c=cc Kobi's answer was: var matches = "a=aa|b=b||b|c=cc".match(/(?:[^|]|\|\|)+/g) his answer was correct. But I need to use "split" method and save store the outputs in a array. so I can't use the Match Method. So please help me...

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• With modern social networking and scaling, can Cassandra replace the standard relational database su

  - by alex

  Is it possible to build the entire social networking application on cassandra? Sure, it takes longer to set up, but it scales much better. Correct? Please list the situations when Cassandra should be used.

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• Is deriving square from rectangle a violation of Liskov's Substitution Principle?

  - by somaraj

  I am new to design and learning the design principles. It says deriving square from rectangle is a classic example of violation of Liskov's Substitution Principle. If that's the case, what should be the correct design?

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• Unable to drop constraint in sql server 2005 "Could not drop constraint. See previous errors"

  - by DannykPowell

  I'm trying to drop a constraint on a db table, something like: ALTER TABLE MyTable drop CONSTRAINT FK_MyTable_AnotherTable But the execution just runs and runs. If I stop it I see: Msg 3727, Level 16, State 0, Line 2 Could not drop constraint. See previous errors. Web search throws up various pages but note that the constraint is properly named and I am trying to remove it using the correct name

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• Best way to get the highest sum from a Matrix (using Java but algorithm is the issue here)

  - by user294896

  Sorry I dont know the correct terminology to use but I have a 3x3 matrix like this 1 3 4 5 4 5 2 2 5 and I want get the highest score by picking a value from each row/column but I cant pick the same row or column more than once , so the answer in this case is 3 + 5 + 5 = 13 (row0,col1 + row1,col0 + row2,col2) 4 + 5 + 5 = 14 is not allowed because would have picked two values from col2 I'm using Java, and typically the matrix would be 15 by 15 in size. Is there a name for what Im trying to do, and whats the algorithm thanks Paul

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• Maintain case sensitivity when importing db into windows

  - by razass

  I have an export from a MYSQL database on a linux machine however when importing that database into MYSQL on windows all of the table names that were camel cased are now all lower case. The sql dump has the correct case in it but the importing via phpmyadmin seams to remove these. How can I import it and keep the case? Thanks

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• sequence of events in ACCESS

  - by I__

  what is the proper way of doing the following: getting DATE as user input running a query generating a report that uses the query this is the solution i was thinking: have a form that takes user input run the query open the report what is the correct way of doing this?

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• tomcat startup.sh trouble finding JAVA_HOME

  - by peter

  I am a bit puzzled by this strange behavior on CentOs 5.4 when starting Tomcat 6.0 as a service I've added a script at /etc/init.d/tomcat that can start/stop/restart Apache Tomcat 6.0 with user 'tomcat', and registered it as service. The problem with the service is that I am getting a 'Neither the JAVA_HOME nor the JRE_HOME environment variable is defined'. But when type 'sudo -u tomcat echo $JAVA_HOME' I get '/usr/java/jdk1.5.0_22' which is correct since I am using that JDK. What can I do about this?

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• Why is IE8 developer tool showing wrong line no for object expected error?

  - by Amitabh

  I am facing a strange javascript object expected error in IE8? On IE Developer tool the error shown as Object expected products.aspx?productid=127, line 234066871 character 5 There is only around 350 lines in the rendered html source. How to find the correct source of error.

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• Linux file names & file globbing

  - by John Lelos

  I have a list of files named: file000 file001 file002 file003 ... file1100 How can I match all files that have a number greater than 800 but less than 1000 ? I am using linux bash Thank you Edit Actually, my files are named like: ab869.enc cp936.enc g122345.enc x2022.enc abc8859-14.enc aax5601.enc cp936-1.enc so the first solution dont match the correct files :( How can I match files that have number between 800-999 ?

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• Converting Dropdown list to int

  - by ar31an

  hello mates i am trying to store value from dropdown list to an integer but i am getting an exception Input string was not in a correct format. int experienceYears = Convert.ToInt32("DropDownList1.SelectedValue"); please help.

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• Fixing the timezone on Solaris 10

  - by Nik

  I have no ideas how to fix this. In my /etc/TIMEZONE file the TZ variable has the correct value (Canada/Eastern) and still it's showing a -1 hour lag. Where else should I be looking?

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• Implementation of java.lang.Random in PHP and C

  - by justinhj

  I'm looking for a random number generator that I can run in PHP, C and Java that will always return the same sequence of numbers for a given seed. Here's the Java implementation I would use: java.util.random source Whilst this would be fairly straightforward to port to C and PHP, there is potentially a lot of work to get all the edge cases correct and handle differences in number representation. I'd be extremely happy to just copy and paste a fully tested version should it exist.

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• Acquire Internet Explorer window position

  - by Ilya

  How do I get in Internet Explorer values equivalent to: window.outerWidth and window.outerHeight in Firefox ? I've seen some "solution": window.screenLeft and window.screenTop but it is not correct. These properties give inner dimensions. I resize a window and I need values to use with window.resizeTo() later, to restore original size after.

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• Validate smtp server credentials using java without actually sending mail.

  - by Sathish

  To verify smtp server credentials shall I use transport.connect()? Session session = Session.getInstance(properties,authenticator); Transport tr=session.getTransport("smtp"); tr.connect(); Is it correct method to check smtp server credentials?

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• How does polymorph ambiguity distinction work?

  - by Pentius

  Given I have a class with two constructors: public class TestClass { ObjectOne o1; ObjectTwo o2; public TestClass(ObjectOne o1) { // .. } public TestClass(ObjectTwo o2) { // .. } } What happens, if I call: new TestClass(null); How to determine the correct method to call? And who determines that? Are there differences between Java and other OOP languages?

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• Directory name "cache" in IIS 5.

  - by Chuck Conway

  In IIS 5 one of the directories off the root has a leading underscore. All files under the directory are unreachable (404) from the browser. I have verified that the paths are correct. Other javascript files outside the directory comedown fine. Any thoughts? Example: http://fm74g4rndmu02.corp.com/_cache/softwarecommunity/api.js

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• #Define Compiler Directive in C#

  - by pm_2

  In C, I could declare a compiler directive as follows: #define MY_NUMBER 10 However, in C#, I only appear to be able to do this: #define MY_NUMBER Which is obviously useless in this case. Is this correct, or am I doing something wrong? If not, can anyone suggest a way of doing this, either at namespace or solution level? I thought of maybe creating a static class, but that seems to be overkill for one value.

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• What happens if two people submit edits at once

  - by Karl Entwistle

  Hi there, This might be a stupid questions but I wanted to know what happens if two users edit some data at once and then both click submit at the same time, I assumed Rails handled requests one after the other and so someone would get an error message but is this correct? Thanks (Once one person has edited data I dont want it to be accessible or editable anymore)

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• Unique text field in MySQL and php

  - by Jonathan

  I've created a salt using; md5(rand(0,10000000)); (there is probably a better way?) There doesn't seem to be possible to make a text field unique in MYSQL. So how do I check if the salt has already been used for a previous user? Or should I generate the salt based on the current date/time? as it is impossible for 2 users to register at exactly the same time correct?

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