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• 64 bit enum in C++?

  - by Rob

  Is there a way to have a 64 bit enum in C++? Whilst refactoring some code I came across bunch of #defines which would be better as an enum, but being greater than 32 bit causes the compiler to error. For some reason I thought the following might work: enum MY_ENUM : unsigned __int64 { LARGE_VALUE = 0x1000000000000000, };

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• why cant we call start method twice on a same instance of the Thread object?

  - by GK

  I was reading about the thread and found that we cant call start method twice on the same thread instance. But i didnt get the exact reason for the same. so why we cant call it twice or even more times?

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• Embedding script with timeout in case server goes down

  - by vsync

  I need a way to make sure my script won't block the viewed page, if the server serving the script is down (port 80 is blocked for some reason). Currently when I test it and take down the server (Apache), or close the firewall, I see in the browser that it is trying to load the resource (script in that case), without success for long seconds, until it aborts. Is there a nice way to get past this issue?

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• Where do I find good example data? [closed]

  - by Silvanus

  Where do people find sample data that they need for development but can't get directly from their employer for whatever reason? I am looking to rewrite my employers' delivery track and trace software as an exercise.

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• I call session_start() the script hangs and nothing happens

  - by shovon

  I am running php5, however as soon as I call session_start() the script hangs and nothing happens. Is anyone else experiencing this problem, or am I doing something incorrectly? I am using session_start() on index.php and for some reason sometimes it'll fail. No warnings, no errors, no notices, not even after prepending error_reporting(E_ALL) and ini_set('display_errors', TRUE) before session_start() do I see anything, it just plain dies.

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• Why is this span above the text? I want it beside the text.

  - by alex

  <td valign="center" colspan="2"> <a href="" class="table_desc" > <span class="desc_info_butt"></span> </a> text here </td> .desc_info_butt{ background:url(Description_Button.png) top left no-repeat; height:16px; width:16px; display:block; } For some reason, the image and text appear on two different lines!~

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• [C++] Why have pointer parameters?

  - by m00st

  Why would I want to have pointer parameters? The only reason I can see is for small functions to attempt to reduce confusion and a smaller memory footprint.

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• after I install a rails gem...I don't see it in /vendor ... where is it?

  - by Angela

  For only one of my gems, compass, is it showing up in the /vendor subdirectory. 1) Where is it? 2) how do I have it show up in the directory? Part of the reason is that I need to take a closer look at the gem to see what it is doing because the documentation isn't complete.

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• Sed not reconizing \t instead it is treating it as 't' why?

  - by sixtyfootersdude

  sed "s/\(.*\)/\t\1/" $filename > $sedTmpFile && mv $sedTmpFile $filename I am expecting this sed script to insert a tab in font of every line in $filename however it is not. For some reason it is inserting a t instead.. Strange..

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• Why does (360 / 24) / 60 = 0 ... in Java

  - by Ankur

  I am trying to compute (360 / 24) / 60 I keep getting the answer 0.0 when I should get 0.25 In words: I want to divide 360 by 24 and then divide the result by 60 public class Divide { public static void main(String[] args){ float div = ((360 / 24) / 60); System.out.println(div); } } This prints out: 0.0 Why is that? Am I doing something really stupid, or is there a good reason for this

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• Should i use a C function or Obj-C Method?

  - by Daniel Granger

  I'm about to create a function which adds to NSDateComponents together is there any advantage to putting this in a C style function or should it go in a Obj-C method? Is there ever a reason to use one rather then the other or should I always stick to Obj-C? BTW: Not that it makes any difference I'm sure but this is for an app on the iPhone Many thanks

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• Missing [X] button in dojo dialog box to close the window

  - by Vani

  For some reason, I am not able to see the [X] button to close the dialog box. I tested examples from dojo website. Everything works but [X] button does not show up. What am I missing?

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• methods of joining 2 tables without using JOIN or SELECT more than one distinct table in the query

  - by GB_J

  Is there a way of joining results from 2 tables without using JOIN or SELECT from more than one table? The reason being the database im working with requires queries that only contain SELECT, FROM, and WHERE clauses containing only one distinct table. I do, however, need information from other tables for the project i'm working on. More info: the querier returns the query results in a .csv format, is there something we can manipulate there?

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• why the String class in java does not implement Iterable?

  - by xyzzyz

  Hey, many builtin classes in Java implement Iterable, however String does not. It makes sense to iterate over chars in the String, just as one can iterate over items in regular array. Is there a reason behind it?

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• Loop through array, print with string.

  - by Adam

  I have a simple array like: var myArr=["one","two","three"]; an I have a counting loop, which increases the value of var i by one. What I want to do is print the next value from the array each time the loop runs, next to a text string, like so: alert('value number '+myArr[i]+); But for some reason I can't get this to work. The following code works, so I'm assuming I'm not calling the counter right: alert('value number '+myArr[0]+);

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• Why we need to set the variable private / public?

  - by Tattat

  Why don't make all variable private? All the variables must give a getter, setter to modify/read. Why leave the "public" keyword here? Except for convenient, any another reason for that?

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• DES?AES?RC4, which encryption method should I use for cellphone Encode and Decode?

  - by Mike108

  I have an asp.net web app storing user's cellphone number in Sql Server 2005. I want to use C# to encode cellphone number for security reason. Which encryption method should I use for cellphone Encode and Decode? DES?AES?RC4 or something else?

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• Under what situation the static/global variables make program crash before main() in C++?

  - by skydoor

  If the program crashed before main(), the static/global variables are the reasons. I have two questions about this 1) Is this the only reason, what other reasons might make program crash before main()? 2) For static/global variables, how could they make the program crash? During the initialization? How are these variables initialized?

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• Why doesn't the String class in Java implement Iterable?

  - by xyzzyz

  Many Java framework classes implement Iterable, however String does not. It makes sense to iterate over characters in a String, just as one can iterate over items in a regular array. Is there a reason why String does not implement Iterable?

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• System.IO.File.ReadAllText(path) does not read the html file.

  - by Harikrishna

  I want to read the html file.And for that I use System.IO.File.ReadAllText(path).It can read all the html file but there is one file which is not read through this function. I have also used using (StreamReader reader = File.OpenText(fileName)) { text = reader.ReadToEnd(); But still there is same problem. What is the reason can be there ? And for that what can be the solution ? Or any other way to read the file ?

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• Why does Convert.ToBoolean("0") fail?

  - by JL

  I know that trying to convert string "0" to boolean will fail, I also know how to fix this, thanks to Jon Skeets answers on other questions. What I would like to know is WHY does C# not recognize "0" as a valid input for a boolean conversion, surely you could look at it like 0 = false, 1 = true, or even -1 = false and 0 = true, anyways, my logic tells me that it could be a valid input, so is there a very good reason why its not? My bet is old vb6 would be able to recognize the string input "0" as valid.

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• Java projects without swing

  - by Jeff Home

  I'm quite familiar with Java and I would like to work on a project on my free time but for some reason, I just hate having to work with swing. I'm wondering what kind of Java technologies are available out there that I can use for starting a project. Thank you.

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• Is objective C 2.0 a proper superset of C?

  - by RankWeis

  I've heard that objective-C is a proper superset of C, but is objective-C 2.0? The reason I ask is that either it isn't, or I misunderstand the phrase 'proper superset', because this code is valid C syntax: import int main () { char *nil = "hello"; printf("%s\n",nil); } But does not compile in Objective-C 2.0. Obviously, this is an easily fixable problem, but I'm writing a paper, and feel that this is something that should be pointed out.

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• Jquery .show() and .hide() or even .css({"display":"none"}); not working in firefox?

  - by tarnfeld

  For some odd reason the part where objects are shown and hidden in my script doesn't seem to be working. I'm not sure if its the fact firefox doesn't like that or whether its the function-based code I have (to save duplicating lines of code)? There is a working example here and the javascript is here All help appreciated

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• switch vs. if...else if...else

  - by John Hartsock

  Guys I have a couple of questions: Is there a preformance difference in Javascript between a switch statement and an if...else if....else? If so why? Is the behavior of switch and if...else if...else different across browsers? (FireFox, IE, Chrome, Opera, Safari) The reason for asking this question is it seems that I get better preformance on a switch statement with approx 100 cases in Firefox. But in IE it get better preformance with 100 if...else if...else.

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