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• What is the best way to create a form for editing a model attribute which is an array of strings in

  - by foggedin

  Take a model with an attribute that is an array of strings. This attribute is serialized to the database. class MyModel < ActiveRecord::Base serialize :str_array end In the edit view I would like to display a text field for each element of the array allowing the user to view and modify the attributes elements.

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• PHP: How to use ereg to validate input text AND string length simultaneously?

  - by Andrew

  Hi, I'm using ereg in the followin way to validate a field which can contain only numbers from 0 to 9: if(eregi("^([0-9])*$", $mynumber)) return true; However the string must have between 8 and 10 characeters. Is it possible to improve the same ereg usage to check for a valid string length as well? Thanks in advance.. all ereg tutorials seem to be traditional chinese to me. :S

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• ui.datepicker.js form validation (solved)

  - by lena

  Hi, I'm using ui.datepicker.js and I want to validate the date field to make sure the user select a date. I have tried function allow_submit() { var f = document.all.frm; if (f.date.value == "") { jAlert("Please select a date"); return false; } //if return true; } and also have try if (f.date.value == "0000-00-00") { without succes Any clue?

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• Forbid developer to commit code because of making weekly build

  - by Xinwang

  Our development team (about 40 developers) has a formal build every two weeks. We have a process that in the "build day", every developers are forbiden to commit code into SVN. I don't think this is a good idea because: Build will take days (even weeks in bad time) to make and BVT. People couldn't comit code as they will, they will not work. People will comit all codes in a hurge pack, so the common is hard to write. I want know if your team has same policy, and if not how do you take this situation. Thanks

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• Replace merge fields with text with OpenXML SDK 2.0

  - by uggwar

  What is the best way to remove all merge fields from a word 2010 document using openxml sdk 2.0, and replace them with a simple text? I have some difficulties to remove them cleanly. Have tried to remove all Run objects that includes a FieldCode with a "MERGEFIELD" defined, and appended a new Run with my text. But I am missing something crucial since the field seems to stay defined for this element.

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• Django form models | ComboBox value

  - by MMRUser

  How do I get the selected value from a form's ComboBox field? what is the model class that deals with ComboBoxes? .. Thanks.

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• What is the fastest way to copy content of DVD to hard disc using Linux

  - by Ritesh

  I have gone through some of the links Which talks about fastest way of copying files in windows using FILE_FLAG_NO_BUFFERING and FILE_FLAG_OVERLAPPED . It also talks about how request made for read and write opeartions with BUFFER SIZE as 256KB and 128KB are faster than 1Mb .The link for that is :- Explanation for tiny reads (overlapped, buffered) outperforming large contiguous reads? I am also loking for a Similar method in linux Which allows me to copy the content of my DVD to Hard Disc in a fast Way . So I wanted to know Is there some file operation flags in Linux which would provide me the best result or Which way of Copy in Linux is the best ? My codes are all in c++.

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• Entity Framework + stored procedure with paging

  - by Eatdoku

  I am using Entity Framework now and using a stored procedure to populate my entity. Where there is no problem with populating my entity, but when i trying to bind the result to a gridview control with "Enable Paging" set to true, it gives an error saying "The data source does not support server-side data paging." I am using stored procedure because one of the table column is FullTextIndexed, and there is a requirement to be able to search on that field. Can anyone tell me how the paging would work in this situation?

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• UTF-8 conversion

  - by leachianus

  Hey guys, I am grabbing a JSON array and storing it in a NSArray, however it includes JSON encoded UTF-8 strings, for example pass\u00e9 represents passé. I need a way of converting all of these different types of strings into the actual character. I have an entire NSArray to convert. Or I can convert it when it is being displayed, which ever is easiest. I found this chart http://tntluoma.com/sidebars/codes/ is there a convenience method for this or a library I can download? thanks, BTW, there is no way I can find to change the server so I can only fix it on my end...

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• Remove Duplicates from JavaScript Array

  - by kramden88

  This seems like such a simple need but I've spent an inordinate amount of time trying to do this to no avail. I've looked at other questions on SO and I haven't found what I need. I have a very simple JavaScript array such as peoplenames = new Array("Mike","Matt","Nancy","Adam","Jenny","Nancy","Carl"); that may or may not contain duplicates and I need to simply remove the duplicates and put the unique values in a new array. That's it. I could point to all the codes that I've tried but I think it's useless because they don't work. If anyone has done this and can help me out I'd really appreciate it. JavaScript or jQuery solutions are both acceptable.

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• How we set or get focus to any control - and leave the focus in COCOA

  - by Amit Battan

  Hi All How we set or get focus on any control in cocoa. like setfirstresponder We have 2 control A and B, A is firstresponder After action I want to set focus ob B control and also how we get focus on a particular control and how we notify that leave focus..... I need it in validation .... I want to force user to fill a textfield and then go to next field..something like this Thanks Deepika

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• Does clustered index on foreign key column increase join performance vs non-clustered ?

  - by alpav

  In many places it's recommended that clustered indexes are better utilized when used to select range of rows using BETWEEN statement. When I select joining by foreign key field in such a way that this clustered index is used, I guess, that clusterization should help too because range of rows is being selected even though they all have same clustered key value and BETWEEN is not used. Considering that I care only about that one select with join and nothing else, am I wrong with my guess ?

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• Align UITableViewCell accessoryView to bottom of cell instead of middle

  - by Jason Prado

  In the native Mail app, the To: field has a ContactAdd UIButton on the right in the accessoryView position, but it is aligned to the bottom of the cell (which you can see as the cell grows in height). Is it possible to mimic this using the accessoryView property? As far as I can tell, accessoryViews always align in the middle.

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• mysql query optimisation

  - by Bharanikumar

  i have around (1,049,906 total, Query took 0.0005 sec) in my x table , If i simply retrieve trying to retrive the particular field records , Its tooks hardly 6 mins , This is my query SELECT CUSTOMER_CODE FROM X_TBL ; CUSTOMER_CODE = UNIQUE THE ABOVE QUERY TOOK 6MIN , Tel me optimization tips for this , Also in some situation to search customer , i used the CUSTOMER_CODE in like , select CUSTOMER_CODE from X_TBL WHERE CUSTOMER_CODE LIKE "$KEY_WORD%" Regards Bharanikumar

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• override delete function in entity framework

  - by k0ni

  How can i make my own delete method to prevent that the data really gets deleted? i want to set a datetime field when it gets deleted insted of a normal delete. i read about overriding the submitchanges function, but i don't get it to work thanks

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• Why call autorelease for iVar definition in init method?

  - by iFloh

  Hi, I just familiarise myself with the CLLocationManager and found several sample class definitions that contain the following init method: - (id) init { self = [super init]; if (self != nil) { self.locationManager = [[[CLLocationManager alloc] init] autorelease]; self.locationManager.delegate = self; } return self; } - (void)dealloc { [self.locationManager release]; [super dealloc]; } I don't understand why the iVar would be autoreleased. Does this not mean it is deallocated at the end of the init method? I am also puzzled to see the same sample codes have the iVar release in the dealloc method. Any thoughts? '

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• Foolproof way to check for nonzero (error) return code in windows batch file

  - by Pat

  Intro There's a lot of advice out there for dealing with return codes in batch files (using the ERROLEVEL mechanism), e.g. Get error code from within a batch file ERRORLEVEL inside IF Some of the advice is to do if errorlevel 1 goto somethingbad, while others recommend using the %ERRORLEVEL% variable and using ==, EQU, LSS, etc. There seem to be issues within IF statements and such, so then delayedexpansion is encouraged, but it seems to come with quirks of its own. Question What is a foolproof (i.e. robust, so it will work on nearly any system with nearly any return code) way to know if a bad (nonzero) code has been returned? My attempt For basic usage, the following seems to work ok to catch any nonzero return code: if not errorlevel 0 ( echo error level was nonzero )

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• How can one fetch partial objects in NHibernate?

  - by mark

  Dear ladies and sirs. I have an object O with 2 fields - A and B. How can I fetch O from the database so that only the field A is fetched? Of course, my real application has objects with many more fields, but two fields are enough to understand the principal. I am using NHibernate 2.1. Thanks.

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• maintaining anonamity proxy and socks list and connecting in php

  - by pramodj4u

  we are going to develop proxy and sock4 and sock5 servers they will provide the list of proxy servers.in the site we need to maintain that list and when user want select particular proxy there will be one pop up window open in that have proxy and socks server field. how to atomization.link text click on proxy shop & socks watch vedio. can you help us how to develop in php.

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• RFC2616 : Do I really need to set WWW_Authenticate when returning 401?

  - by Chris McCauley

  According to RFC2616 if I return 401 in response to a request to my (Ruby) server, I "MUST include a WWW-Authenticate header field." Is this really true? Not setting the header seems to have no negative impact. I'm using Merb as a web framework and it doesn't force me to set the header. Am I missing something or is this a rule more honoured in the breach?

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• Autocomplete problem with scrollbar

  - by Geetha

  Hi All, I am using autocomplete with scrollbar for my textbox. Autocomplete for touch screen. I can scroll up and down using the mouse wheel but i want to Use the mouse button to scroll up or down by dragging the scroll bar. if i use mouse button it moves the focus away from the text box field. Autocomplete is working only when using the keyboard not with the user defined keys. Geetha

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• Select get entire row corresponding to max in MySQL Group

  - by Brian

  When I use Max to find the maximum value of a field in a particular MySQL Group after using GROUP BY, is it possible to get the entire row which contains the maximum value?

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• MFC : How to check if a character input is unicode?

  - by Owen

  Hi All, I have an input text field which accepts a certain maximum number of characters. This number of characters should change though if the character inputs are unicode. Question: Is there a way I could check if the character input is unicode or not?

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• Why doesn't MongoDb store my slashes in this string?

  - by Rob Dudley

  Can anyone tell me why this command doesn't work from the MongoDB shell client: db.coll.update({'live':true},{$set:{'mask':"\D\D\D\D\D\D\D\D"}},false,true) but db.coll.findOne({'id':'someId'}) returns the mask field as: "mask" : "DDDDDDDD", Where are the slashes going? I've tried "double escaping" with \\D and that inserts both slashes: "mask" : "\\D\\D\\D\\D\\D\\D\\D\\D", MongoDB shell version: 2.0.6, MongoDB version: 2.0.5, OSX Lion Thanks

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• Commercial uses for grid computing?

  - by paxdiablo

  I keep hearing from associates about grid computing which, from what I can gather, is highly distributed stuff along the lines of SETI@Home. Is anyone working on these sort of systems for business use? My interest is in figuring out if there's a commercial reason for starting software development in this field.

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