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  • Does a jQuery selector by id always work without quotes and # sign?

    - by anarinsky
    I suddenly found that while using Mozilla / jQuery v1.8.2 I do not need to use the id with quotes and # sign. For example, $(bt2) works the same as $(“#bt2”), see the code below. Will this selector always work and are there any potential drawbacks from using this shorter form of selection? <html> <head> <title>append</title> <script type="text/javascript" src="jquery.js"></script> <script type="text/javascript"> $(document).ready (function(){ $(bt2).click(function(){ $(i1).append("<li>a4</li>", "<li>a5</li>"); }); }); </script> </head> <body> <button id="Button1">Append List</button> <ul id="i1"> <li>a1</li> </ul> </body> </html>

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  • Android: how to obtain AssetManager without reference to Context?

    - by ab11
    I have a Class that needs to obtain a reference to it's application's AssetManager. This class does not extend any sort of android UI class, so it doesn't have a getContext() method, or anything similar. Is there some sort of static Context.getCurrentApplicationContext() type of method? To clarify: my class is intended to be used like a library, for other applications. It has no associated AndroidManifest.xml or control over the context which is calling it.

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  • Why would you use the ternary operator without assigning a value for the "true" condition?

    - by RickNotFred
    In the Android open-source qemu code I ran across this line of code: machine->max_cpus = machine->max_cpus ?: 1; /* Default to UP */ It this just a confusing way of saying: if (machine->max_cpus) { ; //do nothing } else { machine->max_cpus = 1; } If so, wouldn't it be clearer as: if (machine->max_cpus == 0) machine->max_cpus = 1; Interestingly, this compiles and works fine with gcc, but doesn't compile on http://www.comeaucomputing.com/tryitout/ .

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  • Is there a way to use jquery without using the $ - accessor?

    - by ManBugra
    I'am dealing here with a web application that defines somewhere in a java script file: $ = function() { return document.getElementById(arguments[0]); } Every other script, jsp page and dynamic content loaded from db depends on the semantic of the $ - sign working as 'document.getElementById'. Now i would like to start using jqery. So i think i have 2 options: refactor the existing application (all script files, jsp's, dynamic content etc.) somehow introduct jquery as something differnt than '$' (not really an option) don't start using jquery Are there any other solutions? What would you do?

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  • iOS Development: Can I store an array of integers in a Core Data object without creating a new table to represent the array?

    - by BeachRunnerJoe
    Hello. I'm using Core Data and I'm trying to figure out the simplest way to store an array of integers in one of my Core Data entities. Currently, my entities contain various arrays of objects that are more complex than a single number, so it makes sense to represent those arrays as tables in my DB and attach them using relationships. If I want to store a simple array of integers, do I need to create a new table with a single column and attach it using a one-to-many relationship? Or is there a more simple way? Thanks in advance for your wisdom!

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  • CSS: how to move element from one column to another one without changing the html ?

    - by Patrick
    hi, I'm using css to edit the content of a page (NB. I cannot edit html code). I have 2 columns div1, div2. Each columns have several children (containing text). If the block has 2 or more lines of text all successive content is automatically moved down. I need to move a chidlren from the first column to the second one, in the middle. I was considering to use absolute positioning but then I realize how children are not anymore moving down as the number of text lines increases. How can I solve this ? <div id=div1> <div> blabla </div> <div> blabla </div> <div> blabla </div> </div> <div id=div2> <div> blabla </div> <div> blabla </div> <div> blabla </div> </div> thanks

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  • Can an Oracle user get a list of its own running sessions without access to v$session?

    - by Nick Pierpoint
    I have an application that runs a process and I only want one process to run at a time. Some options are: Use an object lock to prevent subsequent processes running. This would be fine, but I want the calling session to return immediately and not wait for the running session to complete. Use a custom Y/N to set whether a process is running or not. I set a "Y" flag at the start of the process and set it to "N" when it finishes or fails. Also fine but feels like I'm re-inventing the wheel and doesn't feel like the way to go. It also falls short if the running session is killed as the flag stays at "Y". Use dbms_application_info.set_module This approach seems the most robust, but if I'm to know there's an existing running process I think I need to be able to query v$session and I don't want this application to have such wide access. Any ideas?

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  • why does InnoDB keep on growing without for every update?

    - by Akash Kava
    I have a table which consists of heavy blobs, and I wanted to conduct some tests on it. I know deleted space is not reclaimed by innodb, so I decided to reuse existing records by updating its own values instead of createing new records. But I noticed, whether I delete and insert a new entry, or I do UPDATE on existing ROW, InnoDB keeps on growing. Assuming I have 100 Rows, each Storing 500KB of information, My InnoDB size is 10MB, now when I call UPDATE on all rows (no insert/ no delete), the innodb grows by ~8MB for every run I do. All I am doing is I am storing exactly 500KB of data in each row, with little modification, and size of blob is fixed. What can I do to prevent this? I know about optimize table, but I cant do it because on regular usage, the table is going to be 60-100GB big, and running optimize will just stall entire server.

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  • How to handle uncaught Exceptions in javascript without a try/catch-block?

    - by user344238
    What i try to accomplish is to register a global handler to catch all uncaught exceptions. Searching the web i only managed to find people pointing out window.onerror but this doesn't do the trick for me. Apparently window.onerror only gets called upon errors and not upon exceptions. Assume the following code: function windowError(message, url, line) { alert(message, url, line); } window.onerror=windowError; throw("uncaught"); The obviously uncaught exception won't trigger the windowError handler. (Using Firefox 3.6.3) Any suggestions?

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  • How can I gain root access on a Mac OS X system without wiping the OS?

    - by Richard T
    My father died recently and I've inherited his Mac. I'd love to put it to use in my own life, but I don't want to wipe its brains out just so I can reconfigure it to use in my network, etc. His old files are historically important to me—I trust you can understand my desire to keep them. I can log in as I had an account on the machine before he passed, but that's about it.

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  • Unable to .append(); without eliminating all the spaces in the code

    - by Adam
    $('#form_holder').append('<div id="spec_id_'+count+'"><div class="avail_container"> <input class="avail_fields" type="checkbox" checked="checked" name="special'+count+'" /><span class="avail_field_label">Special Date</span></div> <div class="avail_container"><div class="avail_time_container"><span class="field_label">Time</span> <select name="special'+count+'_time_from_1"> <?php for ($t = 0; $t<24; $t++){ ?> <option value="<?php echo $t; ?>"><?php echo $t; ?></option> <?php } ?> </select>: <select name="special'+count+'_time_from_2"> <?php for ($t = 0; $t<60; $t+=15){ ?> <option value="<?php if($t == 0){ echo $t . '' . $t; }else{ echo $t; } ?>"><?php if($t == 0){ echo $t . '' . $t; }else{ echo $t; } ?></option> <?php } ?> </select> <span class="field_label">to</span> <select name="special'+count+'_time_to_1"> <?php for ($t = 0; $t<24; $t++){ ?> <option value="<?php echo $t; ?>"><?php echo $t; ?></option> <?php } ?> </select>: <select name="special'+count+'_time_to_2"> <?php for ($t = 0; $t<60; $t+=15){ ?> <option value="<?php if($t == 0){ echo $t . '' . $t; }else{ echo $t; } ?>"><?php if($t == 0){ echo $t . '' . $t; }else{ echo $t; } ?></option> <?php } ?> </select> </div> </div> </div>'); I'm assuming javascript or jquery does not like breaks like I have here, because all my javascript code does not work. What would be an alternative to eliminating all the spaces, which would make viewing the code difficult?

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  • How to override <base> tag without removing the tag itself?

    - by sSmacKk
    I'm trying to add some internal links(in the format of a content table, to be able to facilitate webpage navigation) to this site in which a tag is used. Now obviously due to the base tag, every other relative tag will be relative to the base tag href. But in order for me to create this internal content table with the links pointing to different parts of the specific page, i need to get the default URL (before base tag is in effect) so the internal links can work properly. Is there a way to do get around the base tag and accomplish this? PS: if the question is unclear please don't hesitate to ask so i can reformulate Thanks in advance, :D :D

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  • In Java, is there a way to write a string literal without having to escape quotes?

    - by Matthew
    Say you have a String literal with a lot of quotation marks inside it. You could escape them all, but it's a pain, and difficult to read. In some languages, you can just do this: foo = '"Hello, World"'; In Java, however, '' is used for chars, so you can't use it for Strings this way. Some languages have syntax to work around this. For example, in python, you can do this: """A pretty "convenient" string""" Does Java have anything similar?

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  • Is it possible to create a branch from a tag in TortoiseSVN without first checking out the tag from

    - by Scott Vierregger
    Our trunk directory contains about 100mb of code and we create tags from the trunk directory. Normally, this is not an issue because a tag takes up no space until you need to use it for something. Since branches are created from tags in SVN, how can I create a branch from a tag wtihout first checking out the tag? It appears I need to do a Tortoise Update from Windows Explorer to get the tag down to my local machine before I can use Tortoise Branch/Tag... to create a branch from it. This seems illogical since we don't make changes to tag folders, and it requires that I check out 100mb of code, only to create a branch, and then check out another 100mb of code in the branch folder, where the changes will actually be made. Ideally, I'd be able to create a branch directly in the repository via RepoBrowser - but I can't see an option for it there. Am I missing something?

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  • Without LIB And String file how can i write this code??

    - by muhammadlodhi
    #include<stdio.h> #include<conio.h> #include<stdlib.h> #include<string.h> struct Node; typedef struct Node * PtrToNode; struct Node { char element; PtrToNode Next; }; PtrToNode MakeEmpty(PtrToNode L) { L= new(Node); L->Next=NULL; return L; } void Push(PtrToNode L,char x) { PtrToNode S; S= new(Node); S->element=x; S->Next=L->Next; L->Next=S; } char Pop(PtrToNode L) { PtrToNode P; P=L->Next; char x=P->element; L->Next=P->Next; free(P); return x; } int main() { PtrToNode L; L= MakeEmpty(NULL); char Input[1000]; int i; printf("please enter your equation:"); scanf("%s",Input); for (i = 0;i<strlen(Input);i++) { if (Input[i]=='(') { Push(L,Input[i]); } if (Input[i]==')') { if (L->Next==NULL) { printf("incorrect"); return 0; } else Pop(L); } } if (L->Next==NULL) printf("correct"); else printf("incorrect"); getch(); return 0; }

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  • I want to crop an image, draw a smaller size image without caching the images.... What is the best w

    - by rkbang
    Hello all, I am storing the images in database. I get the NSData and create an image from it. Now I want to crop or draw a smaller image of the existing image in database which I am getting from the querry. I dont want to cache the images since I am using them in bulk and want to release them as soon as the view being displayed where the images are used is popped up. Is there any efficient solution to make sure that images dont consume memory at the background once their use is over... I will appreciate the lines of code for this. Tnx in advance.

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