Reading Time: < 1 minute 1) This puzzelled me for a while, my macbook air run out of space often. I was trying to use the build “Finder” to find large files, delete files and some unused apps, to no avail. I did some more google and used this Mac App “FindSpace”. And I found this directory /var/vm has some

Reading Time: < 1 minute Recently I need to create some customized textfield to input numbers and text on iPad. I don’t like the default keyboard on iPad because it takes too much of the screen, and in some cases covers up the input field. 1) From iphonedevsdk: What is proper way to do UITextField text change call back? (this

Reading Time: < 1 minute I was involved into a car accident in the past weekend. We are all fine, so as the other party. The main thing is both cars got some damage. It’s funny when I drove the broken car on the road, I got quite a few “look back” from other drivers. And yesterday, at McDonald parking

Reading Time: 2 minutes Have not done this for a while. I have changed job again, and in the new year started a developer position very close to home, doing mobile (iOS, iPhone, iPad) development. I love what I am doing now, because I got opportunity to create an app from back end (database, web service) to front end

Reading Time: < 1 minute I need to create a .NET web service consumable by iOS device. Did some research and found out WCF Restful service is the way to go. I used the following examples (tutorials) to construct my web service. 0) Basic Resource Service (link here). This is basically a self hosting web service run in a main

Reading Time: 4 minutes (Update 02-27-2019) It’s 5 and half years since last update. And two more jobs for me :] Noticed from recent job search in STL, code exercise and code testing (at the spot, pair programming, TDD) is becoming common now in STL, which is unthink of 5.5 years back. I did add a few blog posts

Reading Time: < 1 minute Last week (Friday), when at friends’ house, and the hostess offered snack, she asked “这是什么呀？(what is this)”? Today, after we put her to crib, when my wife and I both read iPhone on bed (her crib is next to our bed), she said “在看什么呀？(what are you reading)?”…Later, she also said “what are you doing?”

Reading Time: < 1 minute drop down box Clear a list for selectionOneMenu every time, got burned by this in a “page number” drop down for Richfaces data scroller. And some other places. Use validator keep in mind it will overwrite the required = “true”, if the user does not select a valid value from drop down, it will give

Reading Time: < 1 minute Saw it at dealsea. This is a good deal, if one does not plan to travel Southwest using the points soon. They offer wide variety of giftcards (not limited to Amazon). I got some Wal-mart gift cards instead, per my wife’s suggestion 🙂 (image credit: onlinegiftcardsblog.com)

Reading Time: 2 minutes The following was written more than a year ago… ====== Got opportunity to work on those two technologies recently due to job change. Had some gotchas as I transform from C++, CAD programming to this new program paradigm. Data problem vs. coding error In CAD world, sometimes there is problem with the data (CAD file)