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  • Is "for(;;)" faster than "while (TRUE)"? If not, why do people use it?

    - by Chris Cooper
    for (;;) { //Something to be done repeatedly } I have seen this sort of thing used a lot, but I think it is rather strange... Wouldn't it be much clearer to say while (TRUE), or something along those lines? I'm guessing that (as is the reason for many-a-programmer to resort to cryptic code) this is a tiny margin faster? Why, and is it REALLY worth it? If so, why not just define it this way: #DEFINE while(TRUE) for(;;)

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  • MySQL 5.1 - logging CREATE/ALTER statements

    - by pako
    Is it possible to log CREATE / ALTER statements issued on a MySQL server? I heard that it could be done with a trigger, but I can't seem to find suitable code anywhere. I would like to log these statements to a table, preferably with the timestamp of when they were issued. Can someone provide me with a sample trigger that would enable me to accomplish this? I would like to log these statements so I can easily synchronize the changes with another MySQL server.

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  • Which JavaScript graphics library has the best performance?

    - by DNS
    I'm doing some research for a JavaScript project where the performance of drawing simple primitives (i.e. lines) is by far the top priority. The answers to this question provide a great list of JS graphics libraries. While I realize that the choice of browser has a greater impact than the library, I'd like to know whether there are any differences between them, before choosing one. Has anyone done a performance comparison between any of these?

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  • What is the best way to organize object oriented code?

    - by Adam
    I haven't coded in java for a long time, and after coding in C, I'm having issued organizing my code for OOP. More specifically I'm not sure when to create a new method, and when to create a new class, and when to just lump everything together. Are there some general rules or guidelines on how it should be done?

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  • How can i check if key is pressed during click event with jquery?

    - by daniel smith
    Hi, I would like to catch a click event with jquery and be able to tell if a key was pressed at the same time so i can fork within the callback function based on the keypress. for example: $("button").click(function() { if([KEYPRESSED WHILE CLICKED]) { do something... } else { do something different... } }); Does anyone know if this is possible at all or how it can be done if it is possible?

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  • How do I show the 'blog last updated' time in Wordpress?

    - by detj
    I want to show the time of the last blog update at the header of my wordpress blog. It's not the last update time of a post but rather any post or page (i.e. any last update done in the blog) e.g. Format: Tuesday, March 16, 2010 Last Update: 6:09 PM ET Is there any template tag to accomplish this?

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  • How to combine a list of choices to determine which select statement

    - by Larry
    I have a mysql db and am using php 5.2 What I am trying to do is offer a list of options for a person to select (only 1). The chosen option will cause a select, update, or delete statement to be ran. The results of the statement do not need to be shown, although, showing the old and then the new would be nice (no problems with that part tho'.). Pseudo-Code: Assign $choice = 0 Check the value of $choice // This way, if it = 100, we do a break Select a Choice:<br> 1. Adjust Status Value (+60) // $choice = 1<br> 2. Show all Ships <br> // $choice = 2 3. Show Ships in Port <br> // $choice = 3 ... 0. $choice="100" // if the value =100, quit this part Use either case (switch) or if/else statements to run the users choice1 If the choice is 1, then run the "Select" statement with the variable of $sql1 -- "SELECT .... If the choice is 2, then run the "Select" statement with the variable of $sql2 --- SELECT * FROM Ships If the choice is 3, then run the "Select" statement with the variable of $sql3 <br> .... If the choice is 0, then we are done. I figured the (3) statements would be assigned in php as: $sql1="...". $sql2="SELECT * FROM Ships" $sql3="SELECT * FROM Ships WHERE nPort="1" My idea was to use the switch statement, but got lost on it. :( I would like the options to be available over and over again, until a variable ($choice) is selected. In which case, this particular page is done and goes back to the "Main Menu"? The coding and display, if I use it, I can do. Just not sure how to write the way to select which one I want. It is possible that I would run all of the queries, and other times, only one, so that is why I would like the choice. An area I get confused in is the proper forms to use such as -- ' ' " " and ...?? Not sure the # of options I will end up with, but it will be more than 5 but less than 20 / page. So if I get the system down for 2-3 choices, I can replicate it for as many as I may need. And, as always, if a better way exists, I am willing to try it. Thanks again... Larry

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  • ASP.NET ObjectDataSource Sorting Twice

    - by user204588
    Hello, I'm working with some existing code uses an objectDataSource and that calls a sort method inside a DLL that I don't have access to. I'm trying to add a custom field to sort and I basically want to re-sort after the initial sort. I don't know if this can be done but before the GridView is displayed, I need to intercept the code and sort the way I want to sort. Any ideas? I'm lost.

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  • Detect activity level of microphone in flex

    - by Gaurav
    Hi, I have to detect avtivityLevel of microphone in Flex. I am using the activityLevel property of Microphone class but as I found out it always return -1 even if I have done Microphone.getMicrophone(). To detect activity level we have to set microphone.setLoopback = true; Does anybody know how to do this without using loop back as I do not want to hear my sound back just monitor the activity level Thanks

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  • Shopping Cart Suggestions Needed

    - by Maen
    I am building a small web app for a pharmacy to keep track of sales and stocks, so in short, in one page, the pharmacist will enter a bar-code and the item is displayed, pharmacist enters quantity (price will be automatically calculated) then next item and next and so on, I haven't worked with such a problem before so I would appreciate any advices/tips on how to do it, what to use and wither its already done in some tidy neat way I can just import into my page. Am using ASP.net and VB.net, SQL 2008 and all express withing Visual Web Developer (also ExpresS)

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  • Is it possible to set an android icon from a drawable in a separate jar?

    - by Rpond
    I want to set a menu option icon for a drawable that is in another jar inside an xml file. <item android:id="@+id/my_location" android:title="My Location" android:icon="@+drawable/my_location"> Instead of drawable/my_location have something like com.somelib.R.drawable.someDrawable. I can set this in onCreateOptionsMenu but was just wondering if it could be done via the xml file.

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  • Combine overlapping urls in C#

    - by Dan Revell
    I've got two Urls. A server and a relative url that I would like to combine. The problem is that part of the url's may well overlap. I've done this using some horrible string manipulation but would like to put this out there and see if there is a nice and clean way of doing it. string siteUrl = "http://seed-dev6/sites/irs"; string formUrl = "/sites/irs/Forms/testform.xsn";

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  • What is a really simple explanation of unit testing?

    - by ensnare
    I've never done any unit testing before, and would like to learn what it is and how it can be useful in my Python code. I've read through a few Python unit testing tutorials online but they're all so complicated and assume an extended programming background. I'm using Python with Pylons to create a simple web app. Any simple examples would be greatly appreciated. Thanks!

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  • Launch an app from within another (iPhone)

    - by Jeff
    Is it possible to launch any arbitrary iPhone application from within another app? For example in my application if I want the user to push a button and launch right into the Phone app (close the current app, open the Phone app), would this be possible? I know this can be done for making phone calls with the tel URL link, but I want to instead just have the Phone app launch without dialing any specific number.

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  • Disable Source tab in Google Code

    - by Ngu Soon Hui
    How to disable source tab in Google Code? I don't want any random users to look at my code. Before you say that this can't be done, that Google Code is by default open source. Someone managed to do it, somehow. Edit: Before you downvote me further, take a look at the link I provided. It's possible to do it, despite whatever you want to say. And I want to know how.

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  • IPhone two fingers twist gesture

    - by user267980
    Hi. I need to rotate an image when the user do a two finger twist on it. do you have an idea on how i can code this or if you've done this before. I think it would be a good idea to write a class that detect all the main gesture and provide iif.

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  • Bash: how to process variables from an input file?

    - by gilgongo
    I've got a bash script that reads input from a file like this: while IFS="|" read -r a b do echo "$a something $b somethingelse" done < "$FILE" The file it reads looketh like this: http://someurl1.com|label1 http://someurl2.com|label2 However, I'd like to be able to insert the names of variables into that file when it suits me, and have the script process them when it sees them, so the file might look like this: http://someurl1.com?$VAR|label1 http://someurl2.com|label2 So $VAR could be, for example, today's date, producing an output like this: http://someurl1.com something label1 somethingelse http://someurl2.com?20100320 something label2 somethingelse

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