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  • What tricks can be used to type and edit code faster?

    - by Thomas
    As Jeff Atwood noted, we are typists first, programmers second. Fast typing and editing may not be essential to be a good programmer, but it certainly helps. I noticed that I consciously and subconsciously use various tricks to get my intent across to the computer as fast as possible. What tricks can be used to type and edit code faster? I'm hoping to collect a nice list here that we can all learn from, so that we can be ever so slightly more productive. One trick per answer please! (This is not about typing speed in general. There are other questions about that. It's also not about general answers like "learn your editor's shortcut keys". Think of this topic as micro-optimizations for specific cases. See my own answers for examples of what I mean.)

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  • Is there anyone out there that codes like me?

    - by Jacob Relkin
    Hi, Some people have told me that my coding style is a lot different than theirs. I think I am somewhat neurotic when it comes to spacing and indenting though. Here's a snippet to show you what I mean: - ( void ) applicationDidFinishLaunching: ( UIApplication *) application { SomeObject *object = [ [ SomeObject alloc ] init ]; int x = 100 / 5; object.someInstanceVariable = ( ( 4 * x ) + rand() ); [ object someMethod ]; } Notice how I space out all of my brackets/parentheses, start curly braces on the same line, "my code has room to breathe", so to speak. So my questions are a) is this normal and b) What's your coding style?

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  • Exception handling in Iterable

    - by Maas
    Is there any way of handling -- and continuing from -- an exception in an iterator while maintaining the foreach syntactic sugar? I've got a parser that iterates over lines in a file, handing back a class-per-line. Occasionally lines will be syntactically bogus, but that doesn't necessarily mean that we shouldn't keep reading the file. My parser implements Iterable, but dealing with the potential exceptions means writing for (Iterator iter = myParser.iterator(); iter.hasNext(); ) { try { MyClass myClass = iter.next(); // .. do stuff .. } catch (Exception e) { // .. do exception stuff .. } } .. nothing wrong with that, but is there any way of getting exception handling on the implicit individual iter.next() calls in the foreach construct?

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  • What's a good way to write XML in C++?

    - by nebukadnezzar
    There are plenty of Libraries to parse XML, but it seems there aren't many good (?) ways to write XML in C++. Libraries I've been using so far: PugiXML: really lightweight, very straightforwarded API, but it seems to lack a way to write XML (Or I haven't found it yet) RapidXML: I don't have much experience with RapidXML; But it does look nice. TinyXML: I find it odd that the STL TinyXML needs to be explicitly "enabled" in TinyXML - I mean, if your compiler doesn't support the STL, get a better one! Anyway, to make my point clear, I have written a PHP Script that does what I plan to do in C++: http://codepad.org/RyhQSgcm I really appreciate any help!

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  • looking for help with Flash sound to play on an iPad

    - by phm
    I hope you might be willing to help me. Years ago, when I was designing a game site, it was recommended to me to do what you pretty much suggested in your answer to a question about Flash sound: put my sound effects as Flash elements. This works great on every platform except the iPad. Do you have any idea what I should do? I'd really appreciate your help and you sound like a helpful person. Some people here can be kind of mean. I'm not a programmer by training, just self taught.

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  • Programming language for fast calculations with big integers

    - by sub
    I'm doing Project Euler problems at the moment and I can solve most of them using my own programming language which uses direct C++ integers (so they are bound to 2^32 on my machine). However, at times there are problems which require me to work with very high numbers, I can't do that with native integers. So I implemented a BigInt library in my language which unfortunately gets extremely slow at times. Is there a programming language suitable for very efficient handling of big numbers? I mean that I want to do the things I could do in other programming languages with it (variables, loops, etc.), but in a faster way. If you have got tips for workarounds of the 2^32 limit in my language/C++/other languages, please tell me too!

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  • Using the AND and NOT Operator in Python

    - by NoahClark
    Here is my custom class that I have that represents a triangle. I'm trying to write code that checks to see if self.a, self.b, and self.c are greater than 0, which would mean that I have Angle, Angle, Angle. Below you will see the code that checks for A and B, however when I use just self.a != 0 then it works fine. I believe I'm not using & correctly. Any ideas? Here is how I am calling it: print myTri.detType() class Triangle: # Angle A To Angle C Connects Side F # Angle C to Angle B Connects Side D # Angle B to Angle A Connects Side E def __init__(self, a, b, c, d, e, f): self.a = a self.b = b self.c = c self.d = d self.e = e self.f = f def detType(self): #Triangle Type AAA if self.a != 0 & self.b != 0: return self.a #If self.a > 10: #return AAA #Triangle Type AAS #elif self.a = 0: #return AAS #Triangle Type ASA #Triangle Type SAS #Triangle Type SSS #else: #return unknown

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  • Fading transition slideshow

    - by Simon Carlson
    I've got a JavaScript that produces a slideshow. It loads the pictures before starting the actual slideshow. Code below. var image1=new Image() image1.src="filename1.jpg" var image2=new Image() image2.src="filename2.jpg" var image3=new Image() image3.src="filename3.jpg" var step=1 function slideit(){ if (!document.images) return document.images.slide.src=eval("image"+step+".src") if (step<3) step++ else step=1 setTimeout("slideit()",1000) } And this is the required HTML for it to work: <img src="filename1.jpg" name="slide" /> Now, if I want to have fading transitions instead of just having new pictures popping up, how do I approach this? By fading I mean either have the old picture fade out, the new fade in or possibly and most likely both fade in/out. Can this be achieved with pure JavaScript and no jQuery or Ajax?

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  • How do I automate a backup of new MobileMe calendar data

    - by ridogi
    The new MobileMe iCal data lives in the cloud, and the data on your computer is actually a cache. This support article http://support.apple.com/kb/HT4226 from Apple explains how to backup calendar data by exporting to an .ics file. I would like to automate that process via AppleScript, Automator or any other method (paid software is fine). The sticking point with AppleScript is selecting the calendar on the left hand column. In Automator I don't think the available actions support this level of automation.

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  • iPhone c++ development / compiler on a non-Mac PC? (Windows? Linux?)

    - by Ehrann Mehdan
    According to the (in)famous iPhone Developer Program License Agreement change 3.3.1 — Applications may only use Documented APIs in the manner prescribed by Apple and must not use or call any private APIs. Applications must be originally written in Objective-C, C, C++, or JavaScript as executed by the iPhone OS WebKit engine, and only code written in C, C++, and Objective-C may compile and directly link against the Documented APIs (e.g., Applications that link to Documented APIs through an intermediary translation or compatibility layer or tool are prohibited). So it is allowed to develop iPhone apps using C++ My questions Is there a compiler / IDE for developing iPhone apps using C++? Is that compiler / IDE available on non Mac environments? (Windows? Linux?) If not, why? I mean an eclipse C++ plugin for iPhone development will be quite popular, or is there already any serious attempt to do that?

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  • how to manage formating of text when read a save file?

    - by moon
    hello i have a java applet application in which i use rich text area . i write URDU the national language of PAKISTAN. i managed to do so with uni codes. the problem is, when i write urdu in text area and select a font and color for each line it do all of this but when i save this file using UTF-8 encoding and then open it again it shows all text formatted as i choose format of last line. my requirement is to open file as it is saved. i mean each file should have same formatting as i done before saving.

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  • Jquery hover with animation

    - by Brian
    anyone know how to stop a .hover happening again before the mouseout animation has finished? I have the following code which has 4 anchors. Once hovered over the anchor the related anchor slides in using animation. My problem is you hover out and in quickly, before the square has been set back to 0px it increases the slide distance. <body class="home"> <div id="container"> <a class="page-link homet" id="anim-1"></a> <a class="page-link about" id="anim-2"></a> <a class="page-link portfolio" id="anim-3"></a> <a class="page-link contacts" id="anim-4"></a> <div id="header"> <div id="logo"> </div> <ul id="navigation"> <li><a id="1"></a></li> <li><a id="2"></a></li> <li><a id="3"></a></li> <li><a id="4"></a></li> </ul> </div> <div id="main"> <div id="left-content"> </div> <div id="main-content"> </div> </div> </div> </body> </html> Jquery var cc = { displayAnim : function () { actionLink = $("#container #header #navigation li a"); movePosition = "0"; $("#container a.page-link").css({ position:"absolute", right: 0}); $(actionLink).hoverIntent( function() { circleToReveal = $(this).attr('id'); switch (circleToReveal) { case "1" : movePostion = "386" break; case "2" : moveposition = "514" break; case "3" : movePosition = "643" break; case "4" : movePosition = "400" break; default : movePosition = "772" }; /* console.log(movePosition); */ $("#container #anim-" +circleToReveal+ "").stop().animate({"right": "+="+ movePosition +"px"}, "slow"); }, function() { $("#container #anim-" +circleToReveal+ "").stop().animate({"right": "-="+ movePosition +"px"}, "slow"); } ); } }; $(window).load (function () { $("body").addClass('js'); $("a.pagelink").hide(); cc.displayAnim(); });

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  • Inserting into an Associative array?

    - by RedShft
    I'm playing around with associative arrays right now and I can't seem to figure out how to add additional objects to the array. I tried insert but it doesn't recognize both arguments. Also, if I do this it produces an error: Node[bool] test; Node node; Node[bool] temp = [ false:node ]; test ~= temp; //Error 1 Error: cannot append type Node[bool] to type //Node[bool] C:\Users\CP\Documents\Visual Studio //2010\Projects\D\STDS\NPC.d 256 Does this mean you can't use the append operator on associative arrays ?

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  • VPN/IPsec for RD, port 80,

    - by Andrew
    I have two Windows VPS's that talk to each other. 1) I already firewall Remote Desktop to a few IPs. I want to require me to connect instead to the server via VPN (IPSec?) in order to then be able to RD. 2) I want to also only permit access to port 80 on the server if I am VPN'd in to the server (authenticated) 3) If possible, I want to secure communication between other VPS's I have using the same method? Thanks

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  • cisco 2851 router: can't view switch ports

    - by red888
    I want to setup vlans on a 2851, but I'm not sure how to access the switch ports. I can access or view them. Is there something I have to enable? I have some devices plugged into the switch ports and they are communicating with each other fine. router(config)#do show ip int bri Interface IP-Address OK? Method Status Protocol GigabitEthernet0/0 unassigned YES NVRAM administratively down down GigabitEthernet0/1 unassigned YES NVRAM administratively down down GigabitEthernet1/0 10.1.1.1 YES manual up up

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  • Writing Resources from filesystem in Android

    - by Markus
    Hi, as I need to get a specific Frame from a Website I want to display in an WebView, I decided to grab the .html from the net and save it under file:///data/data//files/file.html. Stroed there I can edit it using regex or String methods. Now two questions: Is there a way to bind this file to an resource. e.g. to /res/raw/file.html and get it updated dynamically as i edit it? Or can i write the File directly to the resources? Is this whole stuff I do there any good or performant at all? I mean maybe there is a better way to get the .html code between two tags from a Webpage and display it via WebView. Kind regards Markus

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  • The right way to delete file to trash in Snow Leopard using Cocoa ?

    - by Irwan
    I mean the right way must able to "Put Back" in Finder and isn't playing sound Here are the methods I tried so far: NSString * name = @"test.zip"; NSArray * files = [NSArray arrayWithObject: name]; NSWorkspace * ws = [NSWorkspace sharedWorkspace]; [ws performFileOperation: NSWorkspaceRecycleOperation source: @"/Users/" destination: @"" files: files tag: 0]; Downturn : can't "Put Back" in Finder OSStatus status = FSPathMoveObjectToTrashSync( "/Users/test.zip", NULL, kFSFileOperationDefaultOptions ); Downturn : can't "Put Back" in Finder tell application "Finder" set deletedfile to alias "Snow Leopard:Users:test.zip" delete deletedfile end tell Downturn : playing sound so it's annoying if I execute it repeatedly

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  • Zend_Table_Db and Zend_Paginator num rows

    - by Uffo
    I have the following query: $this->select() ->where("`name` LIKE ?",'%'.mysql_escape_string($name).'%') Now I have the Zend_Paginator code: $paginator = new Zend_Paginator( // $d is an instance of Zend_Db_Select new Zend_Paginator_Adapter_DbSelect($d) ); $paginator->getAdapter()->setRowCount(200); $paginator->setItemCountPerPage(15) ->setPageRange(10) ->setCurrentPageNumber($pag); $this->view->data = $paginator; As you see I'm passing the data to the view using $this->view->data = $paginator Before I didn't had $paginator->getAdapter()->setRowCount(200);I could determinate If I have any data or not, what I mean with data, if the query has some results, so If the query has some results I show the to the user, if not, I need to show them a message(No results!) But in this moment I don't know how can I determinate this, since count($paginator) doesn't work anymore because of $paginator->getAdapter()->setRowCount(200);and I'm using this because it taks about 7 sec for Zend_Paginator to count the page numbers. So how can I find If my query has any results?

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  • How to corrupt my hard disk ?

    - by amit
    Hi superuser, Please tell me how to corrupt my hard disk. I have Dell Inspiron 6400 & it's under complete cover insurance. Operating system is WindowS Vista Premium. So please tell me the method which actually work & damage/corrupt my hd.

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  • update table in gtk

    - by ali
    I have window that contains a table on screen, now I want to attach a widget to that table I use gtk_table_attach(GTK_TABLE(table), label, ...) the function is correct and it runs without any error but table does not respond to that line I mean there is no change on my table, I think I need something to tell that table update it self but how? note= that line is inside a callback of a signal and I am sure that signal runs note2= I do not want to destroy window for that note3= I use gtk+ and pygtk note4= I am sure I attach that widget to a correct position ( it is free)

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  • How to create a language these days?

    - by Mike
    I need to get around to writing that programming language I've been meaning to write. How do you kids do it these days? I've been out of the loop for over a decade; are you doing it any differently now than we did back in the pre-internet, pre-windows days? You know, back when "real" coders coded in C, used the command line, and quibbled over which shell was superior? Just to clarify, I mean, not how do you DESIGN a language (that I can figure out fairly easily) but how do you build the compiler and standard libraries and so forth? What tools do you kids use these days?

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  • How to get comma-separated values in Linq?

    - by Mujtaba Hassan
    I have the query below: var users = (from a in dc.UserRoles join u in dc.Users on a.intUserId equals u.ID join r in dc.Roles on a.intRoleId equals r.ID where r.intClientId == clientID select new UserRoleDetail { ID = a.ID, intUserId = a.intUserId, intRoleId = a.intRoleId, Name =u.FullName, //Here I need comma separated values. intAssignedById = a.intAssignedById, RoleName = r.vchName, Function = u.vchFunction }); I require all the values of "Name =u.FullName" to be comma-separated in a single record group by intRoleId. I mean for every role I need all the usernames in a sigle record comma separated. Any suggestion?

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  • Mysql query: count and distinct

    - by Azevedo
    I have this hypotetical MySQL table: TABLE cars: (year, color, brand) How do I count # of cars grouped by brand and year? I mean, how can I get to know how many colors are there grouped by brand like: brand "GM": total # of colors: 8. brand "GM": total # of years (grouped together): 14 (meaning there are count of 14 different years). brand "TOYOTA": total # of colors: 3. brand "TOYOTA": total # of years (grouped together): 10 (meaning there are count of 14 different years) I tried playing some queries with COUNT, DISTINCT, GROUP BY but I can't get to it. Actually I'm trying to get the 2 queries... +-------+---------------+ | brand | count(colors) | +-------+---------------+ +-------+--------------+ | brand | count(years) | +-------+--------------+ thanks a lot!

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  • Delete registry key or value via a CMD script?

    - by Derek
    How do I edit an already-in-production .cmd script file, in order to have the script delete a certain registry key in the Windows registry? Firstly, is this even possible, and secondly (if that's not possible), could I create a .reg file and execute that file from with the .cmd file? From within the .cmd script, it is not working: del "[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\CurrentVersion\SampleKey]" This method hasn't worked for me either: cmd "\\networkdrive\regfiles\deleteSampleKey.reg" Then from within the .reg file: Windows Registry Editor Version 5.00 [ -HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon ]

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