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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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• Source operator doesn't work in if construction in bash

  - by Igor

  Hello, I'd like to include a config file in my bash script with 2 conditions: 1) the config file name is constructed on-the-fly and stored in variable, and 2) in case if config file doesn't exist, the script should fail: config.cfg: CONFIGURED=yes test.sh: #!/bin/sh $CFG=config.cfg echo Source command doesn't work here: [ -f $CFG ] && ( source $CFG ) || (echo $CFG doesnt exist; exit 127) echo $CONFIGURED echo ... but works here: source $CFG echo $CONFIGURED What's wrong in [...] statement?

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• Are +=, |=, &= etc atomic?

  - by SF.

  Are the "modify" operators like +=, |=, &= etc atomic? I know ++ is atomic (if you perform x++; in two different threads "simultaneously", you will always end up with x increased by 2, as opposed to x=x+1 with optimization switched off.) What I wonder is whether variable |= constant, and the likes are thread-safe or do I have to protect them with a mutex? (...or is it CPU-dependent? In this case, how is it on ARM?)

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• Hide html horizontal but not vertical scrollbar

  - by williamjones

  I have an html textarea that is of fixed width, but variable height. I would like to set overflow:scroll and be able to show a vertical scrollbar, but not a horizontal one. I am not able to use overflow:auto due to other things specific to my situation. I know there is no way using CSS 2 to show only vertical but not horizontal scrollbars. Is there anything I can do with javascript to hide the horizontal scrollbar?

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• python / sets / dictionary / initialization

  - by Mario D

  Can someone explain help me understand how the this bit of code works? Particularly how the myHeap assignment works. I know the freq variable is assigned as a dictionary. But what about my myHeap? is it a Set? exe_Data = { 'e' : 0.124167, 't' : 0.0969225, 'a' : 0.0820011, 'i' : 0.0768052, } freq = exe_Data) myHeap = [[pct, [symbol, ""]] for symbol, pct in freq.items()]

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• How to share my localhost over the internet?

  - by Loolooii

  I really want to share my localhost over the internet to show my friends the progress of the website we're working on, so that I don't need to upload it to the public server each time I make a change. showoff.io is not free and localtunnel gives me "failed to authenticate" when trying to upload my public key (a lot of people seem to have this problem and there doesn't seem to be a solution for this). Does anyone know any other free service I can use or any other solution at all? I'm using a Mac. Thanks. UPDATE: with localhost I mean a web server running on my computer, I have a dynamic IP address and no I'm not behind a router (just using a wireless modem).

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• How to declare a IntPtr?

  - by Kovu

  Hi, I have a Window handle Picker and it says my handle is 0094167C. When I declare the variable in c# the letter in this code gives an error. How to declare? public const IntPtr WinHandle = 0094167C;

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• Can I find out the return value before returning while debugging in Visual Studio

  - by doekman

  Take the following function: DataTable go() { return someTableAdapter.getSomeData(); } When I set a breakpoint in this function, is there a possibility to inspect the returned value? The "go" function is directly coupled to a datagrid in an aspx page. The only way to inspect the returned datatable, is to use a temporary variable... However, that's a bit inconvenient. Isn't there another way?

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• PHP - stop calling on refresh

  - by Ross

  I need my class to create a new blank record when the page opens up the problem I am having is when the page refreshes it keeps incrementing by 1, if I write a session to keep the variable the next time I go back it does not increment. Any ideas? if(!isset($_POST['record_no'])) { echo $_POST['record_no'] = $projects->insert__blank_project(); } else { print "already Set"; }

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• Escape single quote in xslt concat function

  - by keshav.veerapaneni

  Hello Colleagues, I want to output single quote around $ID variable in the below xsl:value-of xsl statment. <xsl:value-of select="concat('process[@Ref=',$ID,']')"></xsl:value-of> currently it prints process@Ref=87799989 Please let me know how can i achieve this. Thanks in advance, Keshav

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• Default value for public attributes

  - by Danny Chen

  I have a public attribute in some class. I want a default value -1 for this attribute without an private variable like _MyAttr(because too many attributes, i won't add them one by one). public int MyAttr { get; set; } [DefaultValueAttribute] is not working for this issue i think. Any ideas? Thanks.

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• LinkSys WRT54GL + AM200 in half-bridge mode - UK setup guide recommendations?

  - by Peter Mounce

  I am basically looking for a good guide on how to set up my home network with this set of hardware. I need: Dynamic DNS Firewall + port-forwarding VPN Wake-on-LAN from outside firewall VOIP would be nice QoS would be nice (make torrents take lower priority to other services when those other services are happening) DHCP Wireless + WPA2 security Ability to play multiplayer computer games I am not a networking or computing neophyte, but the last time I messed with network gear was a few years ago, so am needing to dust off knowledge I kinda half have. I have read that I should be wanting to set up the AM200 in half-bridge mode, so that the WRT54GL gets the WAN IP - this sounds like a good idea, but I'd still like to be advised. I have read that the dd-wrt firmware will meet my needs (though I gather I'll need the vpn-specific build, which appears to preclude supporting VOIP), but I'm not wedded to using it. I live in the UK and my ISP supplies me with: a block of 8 static IPs, of which 5 are usable to me a PPPoA ADSL2+ connection

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• LinkSys WRT54GL + AM200 in half-bridge mode - UK setup guide recommendations?

  - by Peter Mounce

  Crossposted from here I am basically looking for a good guide on how to set up my home network with this set of hardware. I need: Dynamic DNS Firewall + port-forwarding VPN Wake-on-LAN from outside firewall VOIP would be nice QoS would be nice (make torrents take lower priority to other services when those other services are happening) DHCP Wireless + WPA2 security Ability to play multiplayer computer games I am not a networking or computing neophyte, but the last time I messed with network gear was a few years ago, so am needing to dust off knowledge I kinda half have. I have read that I should be wanting to set up the AM200 in half-bridge mode, so that the WRT54GL gets the WAN IP - this sounds like a good idea, but I'd still like to be advised. I have read that the dd-wrt firmware will meet my needs (though I gather I'll need the vpn-specific build, which appears to preclude supporting VOIP), but I'm not wedded to using it. I live in the UK and my ISP supplies me with: a block of 8 static IPs, of which 5 are usable to me a PPPoA ADSL2+ connection

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• Ctrl+R, Ctrl+R command not working

  - by mwright

  I'm attempting to use the Ctrl+R, Ctrl+R command within Visual Studio 2008 to rename a variable. I get an error message at the bottom saying that "The key combination (Ctrl+R, Ctrl+R) is bound to command (&Rename...) which is not currently available." I am not running it or anything I can think of which might prohibit modifications of the file and the F2 command allows a rename to happen. Anyone know how to fix this?

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• boost ptime get time from milliseconds

  - by user351875

  I have number of milliseconds since epoch. I want to construct a boost ptime variable using this number. Can anyone help please?

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• How to maintain precision using DateTime.Now.Ticks in C#

  - by nmr

  I know that when I use DateTime.Now.Ticks in C# it returns a long value but I need to store it in an int variable and I am confused as to whether or not I can maintain that precision. As of right now I just have a cast int timeStampValue = (int)DateTime.Now.Ticks; Any suggestions or advice on how to maintain the precision, if possible, would be much appreciated.

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• How can I get all the methods in a Protocol?

  - by jdinuncio

  Hello, How can I get a collection of all the (class) methods in a given protocol in smalltalk/squeak/pharo? I'm trying to collect the values returned by a group of methods. I don't want to have to store the methods in an instance or class variable. So I though I could add them to a protocol and in this way to "mark" them. Thanks.

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• How to make a derived UITableVIew work

  - by justinhj

  I've made a new class in my Xcode project which is derived from UITableView I then drag a UITableView from in the interface builder onto my view and change the class of the object to my derived class. Then I drag the outlet from the table to the files owner and hook it up to an outlet variable in my main view, which is of the same type as my derived class. How do I also set up the datasource and delegate so that they belong to the derived class?

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• Nginx proxy to Apache - resolve HTTP ORIGIN

  - by Fratyr

  I have a server setup with nginx serving static content and proxy all PHP/dynamic requests to apache on 127.0.0.1 I'm building an API for my databases, and I need to allow clients by their origin (domain name), rather than just IP. Based on CORS rules. So when I send an HTTP header header("Access-Control-Allow-Origin: www.client-requesting.myapi.com"); from my API server, I have to tell it which origin I allow, otherwise client side requests won't work to my API due to same-origin policy. The question is how can I know which domain name (if any) called my API? What should be the nginx and apache configuration to pass the origin parameter? I tried to google, and all I found is some possible solution with mod_rpaf, but I wanted to be sure. Thanks!

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• nant nantcontrib configuration to use fxcop

  - by Qutbuddin Kamaal

  hi guys, i have question related fxcop i need to run fxcop attribute which i have implemented in nant build file. i have nant and nantcontrib . i have copied content of nantcontrib\bin to nant\bin folder i have set environment variable to FxCopCmd.exe then also i'm gettin' error when i run nant script : unknown target (fxcop)

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• Converting XDocument to XmlDocument and vice versa.

  - by Workshop Alex

  It's a very simple problem that I have. I use XDocument to generate an XML file. I then want to return it as a XmlDocument class. And I have an XmlDocument variable which I need to convert back to XDocument to append more nodes. So, what is the most efficient method to convert XML between XDocument and XmlDocument? (Without using any temporary storage in a file.)

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• Use Excel Table Column in ComboBox Input Range property

  - by V7L

  I asked this in StackOverflow and was redirected here. Apologies for redundancy. I have an Excel worksheet with a combo box on Sheet1 that is populated via its Input Range property from a Dynamic Named Range on Sheet2. It works fine and no VBA is required. My data on Sheet2 is actually in an Excel Table (all data is in the XLS file, no external data sources). For clarity, I wanted to use a structured table reference for the combo box's Input Range, but cannot seem to find a syntax that works, e.g. myTable[[#Data],[myColumn3]] I cannot find any indications that the combo box WILL accept structured table references, though I cannot see why it wouldn't. So, two part question: 1. Is is possible to use a table column reference in the combo box input range property (not using VBA) and 2. HOW?

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• ssh: which side is running the SOCKS proxy?

  - by Barry Brown

  When I set up a tunnel using dynamic forwarding (ssh -D), which side is running the SOCKS proxy? That is, is the proxy running on the local end (client) or the remote end (server)? Here's the situation: I want to set up several tunnels chained together using -L. Should the -D tunnel be the last one in the chain or the first one? Edit: I found the answer to the second paragraph on Super User (the -D tunnel should be at the remotest end). But I'd still like to know where the proxy code is running.

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• A Byte Array with all 0x00 is Equaled to 0x08?

  - by Ngu Soon Hui

  I think I encountered something extraordinary strange in VS 2008. All the array values are 0x00, but why it is displayed 0x00000008 at the start of the variable?

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• Shell loops using non-integers?

  - by mary

  I wrote a .sh file to compile and run a few programs for a homework assignment. I have a "for" loop in the script, but it won't work unless I use only integers: #!/bin/bash for (( i=10; i<=100000; i+=100)) do ./hw3_2_2 $i done The variable $i is an input for the program hw3_2_2, and I have non-integer values I'd like to use. How could I loop through running the code with a list of decimal numbers?

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