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  • C++: Unitialized variables garbage

    - by Hardware Problem
    int myInt; cout << myInt; // Garbage like 429948, etc If I output and/or work with unitialized variables in C++, what are their assumed values? Actual values in the memory from the "last user"? e.g.: Program A is closed, it had an int with the value 1234 at 0x1234 - I run my program, myInt gets the address 0x1234, I output it like above - 1234 Is it just random garbage?

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  • How do you solve this Haskell problem?

    - by Linda Cohen
    I want to define a function replicate to replicate a list of numbers by its value using only list comprehension, for example: replicate [5,1,3,2,8,1,2] output: [5,5,5,5,5,1,3,3,3,2,2,8,8,8,8,8,8,8,8,1,2,2] I know this would be easy to use the 'replicate' built in function but only list comprehension is allow, how can I do this? THANKS!

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  • PHP: Is_numeric returns false on 0

    - by Industrial
    Hi everyone, Is_numeric() as well as is_int() returns false if the value is 0. What can i do instead to verify that a specific value is numbers only in PHP? Are we heading straight for the Regular Expressions camp, or are there some nice, handy feature for this out there already? Thanks!

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  • handling large number

    - by klw
    Hello, this is actually an problem question from project euler site http://projecteuler.net/index.php?section=problems&id=3 Anyway I'm not out after the solution, but I probably guess you will know what my approach is. To my question now, how do I handle numbers exceeding unsigned int? Is there a mathematical approach for this, if so where can I read about it?

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  • PHP make all possible variants of 4char A-Z,a-z,0-9

    - by Mike
    I have to make a list of all possible permurations of 4characters A-Z,a-z,0-9 and conbination of all this.How can i pass thru all of the possible combinations and printf them ? what's it for:I need to make this in a html document that i can then print and give all this as random unique usernames for our university, so that students can provide feedback based on one unique id that will be invalidated when used. i can not change this procedure into a better one!

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  • C++ STL list vs set

    - by mokaschitta
    Hi, what of those two is faster for random insertions and deletions? I guess list, having the values as the keys as it is with sets seems to be attractive too though. Is performance similar for iterating over the whole container? Thanks!

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  • jquery .live() click multiple times

    - by user355227
    Hi, I am trying to make a script that updates the captcha image, that is loaded through live() function... It works, but it only updates the image 1 time on firefox, 2 times on safari... How can I make this to work multiple times? jquery 1.4.2 relevant part of code: /* captcha image change */ var rand = Math.random(); $('a.captcha_refresh').live('click', function() { $('img.captcha').attr("src", 'captchashow.php?sid=' + rand); }); thanks, brm

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  • Adding zeros when length is less

    - by David
    Is there a smart way to convert numbers to string and automatically add zeroes so the length is the same as the maximum? like this: for (var i=0; i<30; i++) { var c = i.toString(); if (c.length == 1) { c = '0'+=c; } } But smarter

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  • perl + want to put uniq char as @ without backslash "\"

    - by yael
    I need to know if there is some way to replace any string as @ or * or ? or & without to put the "\" before it Example perl -pe 'next if /^#/; s/\@d\&/new_value/ if /param5/' test in this example need to replace the @d& with new_value but I need to put the "\" before @ or & can be other way without to put the "\" because I have random char that can be in the old value.

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  • Two quick Mathematica questions

    - by sciguy
    How do I remove the numbers on the x-axis only not the y-axis? Is it possible to shift the y-axis without shifting the functions? What I mean is, instead of having the y-axis at x = 0, could I have it at x = -5?

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  • please help me to solve problem

    - by davit-datuashvili
    hi everybody fisrt of all this is not homework and now question is like this suppose i have array int a[]=new int[]{0xBCDA,0xABFE,0xBCAD,0xEFCA,0xFFCA} i know that there is always some hexadecimal number which occurs in all number or in this case A is repeat in array everywhere so my aim is print only repeat number and other numbers should be zero so my new array should be like this 0x000A, 0xA000,0x00A0 0x000A,0x000A any idea please help me? p.s please nobody say that this is homework

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  • Implementing a 30 day time trial

    - by svintus
    Question for indie Mac developers out there: How do I implement a 30-day time trial in a non-evil fashion? Putting a counter in the prefs is not an option, since wiping prefs once a month is not a problem for an average user. Putting the counter in a hidden file somewhere sounds a bit dodgy - as a user I hate when apps sprinkle my hard drive with random files. Any ideas?

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  • C threads question

    - by Nadeem
    Write program that has two threads one is reading numbers from the user and the other is printing them such that the first thread reads a new number only after it has been printed by the second thread. Declare one global varaible to use for reading and printing.

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  • PHP Redirect after execution of code

    - by UmYeah
    I have a php page that takes in a bunch of url parameters and sends out an email. I am trying to have this page call another web page using the same url parameters, after the mail is sent. If I do the following, will my email be sent reliably? Is a redirect what I really want to do? Random code to send email... header('Location: http://www.othersite.com/' + $_SERVER["REQUEST_URI"]);

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  • SELECT Data from multiple tables?

    - by Kyle R
    I have 3 tables, with 3 fields all the same. I basically want to select information from each table For example: userid = 1 I want to select data from all 3 tables, where userid = 1 I am currently using: SELECT r.*, p.*, l.* FROM random r LEFT JOIN pandom p ON r.userid = p.userid LEFT JOIN landom l ON l.userid = r.userid WHERE r.userid = '1' LIMIT 0, 30 But it doesn't seem to work.

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  • I need to generate a string of 7 chars that is based on the id of the row.

    - by Totty
    I need to generate a string of 7 chars that is based on the id of the row. So knowing the id of the image and a secret key, i should get the generated string. the string must contain chars from "a" to "z" and numbers from 0 to 9. I have a dir that contains photos like this dir/p3/i2/s21/thumb.jpg the generated string is p3i2s21, then is used to calculate the path of the image.

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  • How do i query to list out all commits by a user to a subversion repository?

    - by VDev
    The title pretty much sums up my question, I would like to find all commits I have ever done to the subversion repository. Not just commits in current snapshot. More importantly, I would like to organize the file lists by the SVN comment used while committing. Thank you Edit: I am thinking maybe a python or shell script that would parse the output of svn log | grep username to extract revisions and then pipes the output to svn log -r [revision numbers go here] Maybe some scripting gurus can help me out..

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  • Layout of popup components changes while moving

    - by Le_Coeur
    I have designed some popup moving menu with JQuery, it looks perfekt in webkit browsers, but i have one problem in mozilla, when i move my popup window, layout of some components in this window changes! For example button add changes from: to: or to: , and it's absolutly random. What can it be?

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