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  • Rails: ruby script/generate model, where are the docs?

    - by yar
    I am running ruby script/generate scaffold or ruby script/generate model and I know the basic syntax, like ruby script/generate scaffold Dude name:string face:boolean but I do not know things like: should names of variables have underscores or be camelCased? what kind of variable types are acceptable? Where can I find such information? THANKS! P.S. The answers to my two questions would help for now, too :)

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  • what's the use of 0 in wait system call?

    - by Supereme
    Hi, The syntax for the wait system call is pid= wait(&var) where pid is the process id of child and var is the variable which will contain the reason for exiting child. But what happens when we use wait((int *)0)? What does it exactly mean? Thank you.

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  • Combining foreach and using

    - by apoorv020
    I'm iterating over a ManageObjectCollection.( which is part of WMI interface). However the important thing is, the following line of code. : foreach (ManagementObject result in results) { //code here } The point is that ManageObject also implements IDisposable, so I would like to put "result" variable in a using block. Any idea on how to do this, without getting too weird or complex?

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  • VB.Net calling New without assigning value

    - by dcp
    In C# I can do this: new SomeObjectType("abc", 10); In other words, I can call new without assigning the created instance to any variable. However, in VB.Net it seems I cannot do the same thing. New SomeObjectType("abc", 10) ' syntax error Is there a way to do this in VB.Net?

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  • [Smarty] Looking for variables which aren't assigned.

    - by Kel
    What could happen if my template looks for variables which weren't assigned? For example: var uwfs_id = '{$tpl_uwfs_id}'; This snippet is from my javascript code. I outputted the value and it is simply empty. I know I could use isset(). But I couldn't find anything about how Smarty handles non-existing variables. So, what happens if template can't find a variable, because it wasn't assigned?

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  • Java: how to initialize String[]?

    - by Heoa
    Error % javac StringTest.java StringTest.java:4: variable errorSoon might not have been initialized errorSoon[0] = "Error, why?"; Code public class StringTest { public static void main(String[] args) { String[] errorSoon; errorSoon[0] = "Error, why?"; } }

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  • Freemarker rendering differently on IE8

    - by scphantm
    we have a template that uses this for the record line <input type="${inputType}" name="${variableName}.code" id="${variable}.${vnum}.${answer.code}" class="checkbox" value="${answer.code}" [#nested/] [#if (answer.textLength > 0) && scripting]onchange="showOtherBox( this, '${variable}.[#if descriptionHack]${variableNumber}[#else]${vnum}[/#if].${answer.code}.description' )"[/#if] [#if showValues && (existing == answer.code)]checked="checked"[/#if]/> On IE8 it renders as this <span class="field"> <INPUT id=responses.8.L class=checkbox value=L type=checkbox name="responses['8'].answers['L'].code"> <LABEL for=responses.8.L>Award(s) for special accomplishment or performance related to activity participation (please list)</LABEL> <TEXTAREA id=responses.8.L.description class=" visible" rows=4 cols=60 name="responses['8'].answers['L'].description"></TEXTAREA> </span> and on every other browser we tried, it renders as this <span class="field"> <input type="checkbox" name="responses['8'].answers['L'].code" id="responses.8.L" class="checkbox" value="L" onchange="showOtherBox( this, 'responses.8.L.description' )"> <label for="responses.8.L">Award(s) for special accomplishment or performance related to activity participation (please list)</label> <textarea rows="4" cols="60" name="responses['8'].answers['L'].description" id="responses.8.L.description" class="visible" classname="visible"></textarea> </span> The difference being that in the FTL script, the if statement [#if (answer.textLength > 0) && scripting] is true for everything except IE. In IE8 its false for some reason and therefore it does not put the OnChange javascript event on the input tag. Has anyone seen anything like this before? we are using Freemarker 2.3.9 Update, it kinda works if i turn compatibility mode on for IE8. but not exactly. when i do that, the onchange event doesn't fire until the check box loses focus. which is very different than everything else. Is there a quick way to fix this without too much trouble? i suppose i could put something in that says if ie8, insert onclick instead of onchange. that may work, but i would need an authorization from the client to fix it like that.

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  • Easiest way to choose a percentage of an amount of rows from a MySQL table?

    - by Rob
    I have a script that has a GET variable: $_GET['percentage'] I have a MySQL table of data. Now lets say that there are 100 rows of data in this table. In pseudo-code: SELECT data FROM table Now would it be possible to select $_GET['percentage'] of random data from table? For example (again in pseudo-code): $_GET['percentage'] = 10; SELECT 10% of data from table order by rand() If this IS possible, how could I do it?

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  • Regular Expression to Match Specific "Values" in Isolated Group

    - by Gandarez
    If have this regular expression to test (\&TRUNC)[\(]{1,}(.+)[\)]{1,} And I have this "tester" ((((&TRUNC((1800,000 / 510)) * 510) * 920) + (2 * (510 * 700)) + ((&TRUNC((1800,000 / 510)) - 1) * 2 * 510 * 80)) / 1000000) * 85,715 My expected value is (inside the personal command "&TRUNC(command)") (1800,000 / 510) I got this value 1800,000 / 510)) * 510) * 920) + (2 * (510 * 700)) + ((&TRUNC((1800,000 / 510)) - 1) * 2 * 510 * 80)) / 1000000 How can I get only expected value in a separated group? PS:. The expressions inside the command called for me as "&TRUNC(command)" is variable.

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  • BIND: How do I allow DNS query from specific external host?

    - by krbvroc1
    I'm running Centos 5.8 (bind 9.3.6). Here is my issue... I run my own DNS server to serve the local machine. I would like to use my DNS server from home. Since my home is a dynamic IP address, I am not sure how this would be accomplished. In my named.conf, there is an allow-query{} and allow-recursion{}. It seems both of those take an IP address, but i need to specify a hostname (at least a cname). This is not a public DNS server (so any is not an option). My hostname/cname is already updated automatically using nsupdate. The only solution I can think of, which I do not like, is to change my nsupdate script to somehow modify the named.conf to search/replace the allow-query/recursion IP address. That would require restarting named whenever the hostname changes as well as Is there some other way to handle this?

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  • How to use a Proxy with Youtube API? (Python)

    - by Kate
    Hi, I'm working a script that will upload videos to YouTube with different accounts. Is there a way to use HTTPS or SOCKS proxies to filter all the requests. My client doesn't want to leave any footprints for Google. The only way I found was to set the proxy environment variable beforehand but this seems cumbersome. Is there some way I'm missing? Thanks :)

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  • C# Search for subdirectory (not for files)...

    - by Brad
    Every example I see seems to be for recursively getting files in subdirectories uses files only. What I'm trying to do is search a folder for a particular subdirectory named "xxx" then save that path to a variable so I can use it for other things. Is this possible without looping through all the directories and comparing by name?

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  • Runtime error on Did End On Exit in iPhone application

    - by Deepak Pillai
    Does anyone know why im getting runtime error when i click on return button on iphone keyboard. I need to hide keyboard after done editing values to UITextField. So i assigned Did End On Exit to IBAction and the IBAction code below -(IBAction)FinishEditing:(id)sender { [folderName resignFirstResponder]; } When running ma project i facing a runtime error and the variable values shown below argv char ** 0xbffff58c *argv char * 0xbffff6b8 **argv char '/' Console Value (lldb) Any idea to overcome this issue??

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  • Why Virtualbox VDI doubles the space of the VM hard disk?

    - by logoff
    I have one Xubuntu 12.10 64 bit Virtualbox VM on a Windows 7 64 bit host. It has one dynamic allocated hard disk with VDI format with maximum capacity of 20GB. If I use a command df -h in the VM I get that 5.3GB are in use in th main partition. I have only 2 partitions, one for the ext4 hard disk and another with 512MB of swap. I have no snapshots. The VDI file of this VM has 10.7GB. It is normal this difference of space? It is caused because the VDI format?

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  • Replace a method call

    - by deV
    Hi, I want to achieve below task: 1. I need to search Html.Resource("key") in my application and replace it with GetResource("key",object) 2. The GetResource method has two parameters: the first parameter should be the same as the original method,"key" in this case, and I need to pass in the second parameter which is variable. 3. I need to replace only when the Html.Resource("key") occurs inside certain tags like td and div else I need not replace it. Thanks in advance

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  • How can I retrieve all the returned variables from a function?

    - by user1447941
    import random def some_function(): example = random.randint(0, 1) if example == 1: other_example = 2 else: return False return example, other_example With this example, there is a chance that either one or two variables will be returned. Usually, for one variable I'd use var = some_function() while for two, var, var2 = some_function(). How can I tell how many variables are being returned by the function?

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  • Testing local scoped object with mockito without refactoring

    - by supertonsky
    Say I have the following code: public class ClassToTest { AnotherClass anotherClass; public void methodToTest( int x, int y ) { int z = x + y anotherClass.receiveSomething( z ); } } public class AnotherClass { public void receiveSomething( int z ) {.. do something.. } } I want to make assertion on the value of the variable z. How do I do this? Variables x, y, and z could be some other Java class types, and I just used "int" for simplicity.

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  • Concate String In MYSQL

    - by streetparade
    How can i concate this string in mysql desc=desc+$desct what i want is each time i insert a variable from PHP that the string is added to the string which was already in db and seperated with || the field desc should look like this desc 10||30||90||710 say i want to add the value 20 desc 10||30||90||710||20 then the desc field should look like this How can i implement this?

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  • How to resolve situation with jqGrid - not save value when move to next page

    - by user1288108
    I set new value at the last row and right col on the first page of the jqGrid. After this I move to the next page and see the same new value on the first row and right col!!! I am return to the first page and see in the last row and right col the previos value(not new one). The jqGrid is initialized with datatype: "xmlstring" from javascript variable who is set with "datastr" parameter. How to resolve the situation?

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  • core at which function is running

    - by kumar
    hi, consider a kernel tasklet scheduled and executing the tasklet function. Is there a way to know which core the tasklet is running ? I mean is there a function / variable to know at which core the tasklet is running at. Architecture is arm. Thanks!

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