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  • What makes the availability of both primitive and object-wrapped values in JavaScript useful?

    - by Delan Azabani
    I wrote a blog post a while ago detailing how the availability of both primitive and object-wrapped value types in JavaScript (for things such as Number, String and Boolean) causes trouble, including but not limited to type-casting to a boolean (e.g. object-wrapped NaN, "" and false actually type-cast to true). My question is, with all this confusion and problems, is there any benefit to JavaScript having both types of values for the built-in classes?

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  • php : is this if condition correct?

    - by phill
    I have the following if condition statement if ( (strlen($data[70])>0) || ( (remove19((trim($data[29])) == '7135556666')) && isLongDistance($data[8])) ) where $data is a recordset from a database. My goal is to include all rows where $data[70] isn't blank, and also include rows where $data[29] = 713555666 && $data[8] isLongDistance = TRUE My question is, if isLongDistance($data[8]) returns false, will it still return the row since $data[70] is not blank? thanks in advance

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  • mySQL - One large query vs Ajax indivdual queries

    - by Mark
    Hi guys, I guess no one will have a definative answer to this but considered predictions would be appriciated. I am in the process of developing a mySQL database for a web application and my question is: Is it more efficient to make a single query that returns a single row using AJAX or To request 100 - 700 rows when the user will likely only ever use the results of two or three? Really I am asking what is heavier for the server 2-3 requests with one result or 1 request with 100 - 700 results? Thanks, Mark

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  • php code to return xml

    - by anwar
    hi there i have a question and need help on this from you guys . I have a database created for a game called gamesleaderboard and the fields are id, player_name, score, leveltime. and my task is after getting the score, i have to insert it to a database and sort the dbase accordingly. after sorting, the code will return an xml in the following structure: Ahmad100080 Basel95090 Samer920100 Seyd900110 Ahmad100080 Basel95090 Samer920100 Seyd900110 Ahmad100080 Basel95090 plz tell me the necessary details how to do this thankyou.

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  • Change texture opacity in OpenGL

    - by zoul
    Hello! This is hopefully a simple question: I have an OpenGL texture and would like to be able to change its opacity, how do I do that? The texture already has an alpha channel and blending works fine, but I want to be able to decrease the opacity of the whole texture, to fade it into the background. I have fiddled with glBlendFunc, but with no luck – it seems that I would need something like GL_SRC_ALPHA_MINUS_CONSTANT, which is not available. I am working on iPhone, with OpenGL ES.

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  • Membership levels PHP

    - by Ben
    I want to make someone able to register on my site (or upgrade their current account) with one of 3 membership levels. When someone selects the membership level (or upgrades their current account) and registers, they will register under that membership level and payment will be started from there. My real question being how do I make someone able to sign up (or upgrade) an account upon registration (for new accounts) and upgrade for existing accounts and have this happen automatically so I dont have to do them all by hand? Thanks! Benjamin

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  • Hide the Emacs echo area when not in use

    - by Baldur
    The echo area is the line at the bottom of Emacs below the mode line: ~ ~ | | +-----------------------+ |-U:--- mode-line | +-----------------------+ | M-x echo-area | +-----------------------+ Now the mode line is highly customizable while the echo area is more rigid (and unused a lot of the time). The question is pretty simple: is it possible to hide the echo area during inactivity and redisplay it once it needs your attention: ~ ~ ~ ~ | | | | | | +-----------------------+ | | |-U:--- mode-line | +-----------------------+ +-----------------------+ |-U:--- mode-line | | M-x echo-area | +-----------------------+ +-----------------------+ Inactive Active This is similar to the way Google Chrome displays URLs when you hover your mose over a link and the Firefox addon Pentadactyl where the command-line is hidden by default.

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  • HOw to create an array of images?

    - by user317149
    HI, I need to create an array of images,in which, every time i tap, a new image gets placed at "view". and at some particular duration of time, i need to clear that array of images, so that all the images gets cleared from the view. like on button click, i want to clear all the images which are on the view, through taps, should be clear at once. Hope i m clear with my question. looking for an quick reply. regards shishir

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  • How does Content-Aware fill work?

    - by CiscoIPPhone
    The upcoming version of Photoshop a feature called Content-Aware fill. This feature will fill a selection of an image based on the surrounding image - to the point it can generate bushes and clouds while being seamless with the surrounding image. See http://www.youtube.com/watch?v=NH0aEp1oDOI for a preview of the Photoshop feature I'm talking about. My question is: How does this feature work algorithmically?

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  • Synthesized property of a protocol not seeing superclass' ivar

    - by hyn
    I have a situation where my subclass is not seeing the superclass' instance variable x. The ivar is obviously @protected by default, so why do I get a compiler error "x undeclared"? - (CGSize)hitSize { // Compiler error return size; } EDIT: hitSize is a property of a protocol my subclass is conforming to. The problem was that I had hitSize @synthesized, which was the culprit. The question then is why can't the synthesized getter see the ivar?

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  • Access Iphone Pim Data via web app

    - by Eric
    i think i know the answer to this question, but just want to make sure before i dismiss the possibility. is it possible with user permission for my web app to access pim data like the address book on a iphone, similar to how a web app can access the location service?

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  • display unsigned zerofill autoincrement value without leading zero

    - by I Like PHP
    my primay key is user_id which is auto incremant UNSIGNED ZERO FILL, i want to display user_id on a page without leading Zero( means 1 instead of 0000000001 ).. how can we do that in php or in mysql one more question... if i delete last record( let user_id=21) wwhich have highest id of that table then can we adjust auto increment value to 21 instead of 22 of that table.

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  • MVC and conditional formatting - strategies for implementation

    - by Extrakun
    Right now I am writing a simulation program which output is formatted according to certain factors. The question is in a MVC architecture, where is the conditional formatting to be taken place? What are some strategies for implement this feature? FYI, The platform I am using is rather bare-bone in its GUI/front-end execution. To change color and formatting, it requires a change to the formatting state (much like OpenGL).

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  • iPhone: save log files and transfer to PC

    - by Dhanesh
    Hi, In my iPhone application, there is a requirement to save a few log files in the phone(files are run-time generated). Then I have to copy/transfer the files into the pc. Can anyone suggest the best way to do this. Pls consider this as a newbee question. Thanks in advance.. ~Dhanesh

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  • How can I search PDF?

    - by DILi
    Hi, Im doing a small project in C++ in LINUX PLATFORM.i need to search 10 or more PDF files and find required data.how can i do so?. i will make my question more clear with following eg suppose i have ten text books all about c++ and i need info about the topic array and how i can search the pdf and find data? thanks in advance

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  • Undo "git add"?

    - by ceretullis
    Git newbie here, quick question. I mistakenly added files using the command "git add file". I have not yet run "git commit". Is there a way to remove these files from the commit?

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  • Variable assignment in bash

    - by Werner
    Hi, this is probably a very stupid question; in a bash script, given the output of, for instance; awk '{print $7}' temp it gives 0.54546 I would like to give this to a variable, so I tried: read ENE <<< $(awk '{print $7}' temp) but I get Syntax error: redirection unexpected Could you tell me why, and what is the easiest way to do this assignment? Thanks

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