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Search found 680 results on 28 pages for 'allen ho'.

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• To check whether a digit is inside an integer (ruby)

  - by Horace Ho

  Chinese people do not like numbers with a digit 4 in it. I am going to implement a membership program with membership numbers not including the digit 4, say: number = 3 number.next.has4? => true how the has4? method can be done (efficiently)?

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• Is 'donation' considered as commerical?

  - by Horace Ho

  I want to port an open source program to iPhone, the license prohibited any commercial use of the code. I emailed the author and he sent back an email saying freeware is ok. Of course I cannot (should not) charge anything on top of the code. Still, I want to get compensation for my work on UI design, graphics and integration work. So I wonder: Is donation (via PayPal) OK for my case? Is in-app purchase OK? i.e. the program is free, the user has the option to buy addition theme graphics? Thanks

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• MySQL 5 in MySQL 4 compatible mode for one database?

  - by Horace Ho

  In a recent project, I have to maintain some PHP code. I set up a development server and installed MySQL, Apache, PHP, ..etc. The program is terminated with an error: Unknown column _ _ _ in 'on clause' Cannot select .... Google shows that it's a change of syntax around JOINs, parentheses are needed. As you may imagine, fixing all that PHP SQL strings will be the last resort. _< Is is possible to config MySQL 5 to run at MySQL 4 compatible mode? Or even better, for only one database? Thanks! p.s. Since we are going to host the code on a new production server (MySQL 5 on a CentOS box), the chance to install MySQL 4 on the new server might be slim.

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• iPhone animaion, how to flip a coin (2 UIImageview)?

  - by Horace Ho

  Assume there are 2 UIImageview s, the front and back images of a coin. How to animate the 2 UIImageviews such that the face and the back is flipping (spinning) continuously? Thanks!

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• How to manage images (dimension-wise) in iPhone OS 3.1x / 3.2 / 4.0?

  - by Horace Ho

  iPhone is 480 x 320, iPad is 1024 x 768, iOS 4 is 960 x 640. What is the good practice of managing images for 3 resolutions? Say the app wallpaper as an example, the iPhone is probably a 50%-reduction of the iOS4 one. But it is also tempting to design one dimension (1024 x 768) for both devices (iPad and iOS 4 phones). Any suggestions? thanks

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• Neat way of calling InvokeRequired and BeginInvoke

  - by ho

  I seem to remember seeing some neat way of calling InvokeRequired and BeginInvoke to avoid repeating too much code in every event handler but I can't remember what that was. So does anyone know a neat way of writing that code?

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• Replace each char in a multi-line string except space and \r \n, how?

  - by Horace Ho

  A multi-line string, e.g. abc 123 456 def wanted result (ordinal + 2): cde 345 678 fgh if I use: text = "abc 123\n456 def" add2=''.join(chr(ord(c)+2) for c in text) print text print add2 the space and \r \n will also be replaced, how can I add the exception of not including space, \r or \n in the 2nd line of code. p.s. it's follow up to this question.

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• SQL-wrappers (activerecord) to recommened for python?

  - by Horace Ho

  is there an activerecord (any similar SQL-wrapper) for python? which is good for: used in a server-side python script light-weight supports MySQL what I need to do: insert (filename, file size, file md5, the file itself) into (string, int, string, BLOB) columns if the same file (checksum + filename) does not exist in db thx

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• C#: Convert array to use in params with additional parameters

  - by user1805759

  I have a method that takes params. Inside the method another variable shall be added to the output: private void ParamsTest(params object[] objs) { var foo = "hello"; // Invalid: Interpretes objs as single array parameter: Console.WriteLine("{0}, {1}, {2}", foo, objs); } When I call ParamsTest("Hi", "Ho"); I would like to see the output. hello Hi Ho What do I need to do? I can copy foo and objs into a new array and pass that array to WriteLine but is there a more elegant way to force objs to behave as params again? Kind of objs.ToParams()?

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• VB6 debugging- doesn't go to error handling code.

  - by Can Ho

  Hi, I'm maintaining a vb6 project(ActiveX DLL). When debugging, the app run into the following function: Public Function HasValue(ByVal vValue) As Boolean On Error GoTo Err If IsMissing(vValue) Then HasValue = False ElseIf IsNull(vValue) Or Len(vValue) = 0 Then HasValue = False ElseIf isEmpty(vValue) Then HasValue = False Else HasValue = True End If Exit Function Err: If IsArray(vValue) Or IsObject(vValue) Then HasValue = True Else HasValue = False End If End Function and it stops at the line ElseIf IsNull(vValue) Or Len(vValue) = 0 Then vValue is a custom object, contains some properties(obviously, not null). Although I didn't put any break point there, the app stopped there and alerted error dialog saying that "Run-time error '438': Object doesn't support this property or method". We had error handling code but the app didn't run to error handling code. It just stopped at the line causing the error and I had to stop the application. Do you have any idea about that? Thank you very much.

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• Neat way of calling InvokeRequired and Invoke

  - by ho

  I seem to remember seeing some neat way of calling InvokeRequired and Invoke to avoid repeating too much code in every event handler but I can't remember what that was. So does anyone know a neat way of writing that code? Preferably for VB.Net 2005.

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• Cannot make a static reference to the non-static type MyRunnable

  - by kaiwii ho

  Here is the whole code : import java.util.ArrayList; public class Test{ ThreadLocal<ArrayList<E>>arraylist=new ThreadLocal<ArrayList<E>>(){ @Override protected ArrayList<E> initialValue() { // TODO Auto-generated method stub //return super.initialValue(); ArrayList<E>arraylist=new ArrayList<E>(); for(int i=0;i<=20;i++) arraylist.add((E) new Integer(i)); return arraylist; } }; class MyRunnable implements Runnable{ private Test mytest; public MyRunnable(Test test){ mytest=test; // TODO Auto-generated constructor stub } @Override public void run() { System.out.println("before"+mytest.arraylist.toString()); ArrayList<E>myarraylist=(ArrayList<E>) mytest.arraylist.get(); myarraylist.add((E) new Double(Math.random())); mytest.arraylist.set(myarraylist); System.out.println("after"+mytest.arraylist.toString()); } // TODO Auto-generated method stub } public static void main(String[] args){ Test test=new Test<Double>(); System.out.println(test.arraylist.toString()); new Thread(new MyRunnable(test)).start(); new Thread(new MyRunnable(test)).start(); System.out.println(arraylist.toString()); } } my questions are: 1\ why the new Thread(new MyRunnable(test)).start(); cause the error: Cannot make a static reference to the non-static type MyRunnable ? 2\ what is the static reference refer to right here? thx in advanced

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• Form data upload from iPhone to PHP server via https

  - by Horace Ho

  Is there a good tutorial or sample project of how to upload data from iPhone to a self-owned web server? The project is like: A survey application on iPhone which stores the user input data in a plist When there is internet connection, the program will enable an "Upload" button When the Upload button is clicked, the program will upload the data via HTTP form submit (POST) The server is Linux + MySQL + Apache + PHP The data should be sent via a https:// connection

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• (Free) Text editor on Windows with a folder view?

  - by Horace Ho

  I have to stay away from my MacBook and will use Windows for a while. I missed Textmate's folder view when editing my rails projects. Is there an editor on Windows with the folder view? I know there is the E text editor. But I'll save a few bucks if there is a free (cheaper) alternative, as I won't stay in Windows for long ...

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• Select-all checkboxes in a FORM_TAG

  - by Horace Ho

  In a form_tag, there is a list of 10 to 15 checkboxes: <%= check_box_tag 'vehicles[]', car.id %> How can I select-all (put a tick in every single) checkboxes by RJS? Thanks EDIT: Sorry I didn't make my question clear. What I meant to ask is how to add a "Select/Un-select All" link in the same page to toggle the checkboxes.

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• How to clone a xib and viewcontroller quickly?

  - by Horace Ho

  I am going create a new xib which is very similar to an existing one. Instead on of crate an blank new one, copy UI elements and viewcontroller IOOutlets; is there a quick way to clone a xib with corresponding new viewcontroller class? Thanks

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• Is there a file management library for the iPhone Documents folder?

  - by Horace Ho

  I am look for file management features, such as: folder listing file listing create/rename/delete folder rename/delete files move files among folders via a UITableView. BSD-like licensed code preferred. Thanks

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• Is it possible to set two encodings for one hml?

  - by Horace Ho

  Is there a way to specify certain part of a html file as another encoding? The default encoding for the (generated) html is utf-8. However, some of the included data to be inserted in the html is in another encoding. It's something like: <div> the normal html in utf-8 </div> <div> <%= raw_data_in_another_encoding %> </div> Is there a way to hint a browser to render the 2nd <div> in another encoding? thanks

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• PHP script sample for iPhone hi-score/survey uploading?

  - by Horace Ho

  I am looking for a PHP example/tutorial which can accept hi-scores/survey upload from an iPhone. Hopefully, the PHP script: accepts POST, in additional to GET works over SSL (https) connects to MySQL In addition, it'd best the iPhone can get a session from the server and submit the session value along with the hi-score. Thanks

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• How to automate IE/Firefox to download some files from a https: website with Javascript links?

  - by Horace Ho

  Some of my users download several pdf files from an internet website regularly. They'd like to automate the process to save a few minutes every day, and most importantly, to minimize errors. I tried mechanize but failed as mechanize does not process javascripts. Since the download links in the remote site are all triggered by javescript, I am looking for solutions to automate the browser itself. Any recommendations? https remote server login and search are FORM POST file download link are JavaScripts on win32 IE or Firefox thanks!

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• What're the killer features of ruby 1.9 (to you)?

  - by Horace Ho

  I have ruby 1.8.x on: 1 x Snow Leopard n x CentOS (mostly are my clients) 1 x Windows XP Once recently I installed RVM to have multiple ruby versions on my Mac. Basically none of my production Rails projects is running on on 1.9.x ruby. So, what makes you to move to 1.9.x?

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• How to tell whether on sub-view's is above another sub-view?

  - by Horace Ho

  Assume there are 3 sub-views (A, B, C) in a view. After a few rounds of random bringSubviewToFront and sendSubviewToBack on A, B, or C , how can I tell whether one sub-view (e.g. A) is on top of another sub-view (e.g. C)? Whether they overlap each other is not required information. Thanks!

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• NULL value in :conditions =>

  - by Horace Ho

  Contract.all(:conditions => ['voided == ?', 0]).size => 364 Contract.all(:conditions => ['voided != ?', 0]).size => 8 Contract.all.size => 441 the 3 numbers does not added up (364 + 8 != 441). What's the proper way write the :conditions to count the rows which the voided column value is NULL or equal to zero?

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• Is there is software license for code review (read-) only?

  - by Horace Ho

  I am going to development a product related to security. It's my personal belief that any security related product should release it's source code for review. However, I also want to sell it as a commercial product and keep the code ownership to myself and don't expect deviated work. Is there a software license for this purpose? Thanks.

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• Is it possible for PHP to generate a fresh page on every Javascript history.go(-1) ?

  - by Ho

  Hello, I have a PHP page (a.php) which is already sending these headers: <?php header('Cache-Control: no-cache, no-store, max-age=0, must-revalidate'); header('Expires: Mon, 26 Jul 1997 05:00:00 GMT'); header('Pragma: no-cache'); ?> And on the PHP page (a.php) , it has a link to another page (b.html) on b.html, it has a javascript code to: <script type="text/javascript"> history.go(-1); </scirpt> It seems to me that, when the browser is "going back" to a.php,the content isn't fresh at all. Would you please advise me if generating a completely fresh page on history.go(-1) is possible? Thank you.

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