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  • MySQL & PHP Parameter 1 as Resource

    - by Nik
    Alright, PHP is throwing this error at me (in the log) when I run the code mentioned below: Error mysql_num_rows() expects parameter 1 to be resource, string given in (place) on line 10 Line 9-11 $queryFP = ("SELECT * FROM db"); $countFP = mysql_num_rows($queryFP); $aID = rand(1, $countFP); I think it has something to do with the $queryFP's syntax, but I'm not completely sure how to fix it since $queryFP's syntax is the simplest query I've ever seen.

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  • To have an Integer pointing to 3 ordered lists in Java

    - by Masi
    Which datastructure would you use in the place of X to have efficient merges, sorts and additions as described below? #1 Possible solution: one HashMap to X -datastructure Having a HashMap pointing from fileID to some datastructure linking word, wordCount and wordID may be a good solution. However, I have not found a way to implement it. I am not allowed to use Postgres or any similar tool to keep my data neutralized. I want to have efficient merges, sorts and additions according to fileID, wordID or wordCount for the type below. I have the type Words which has th field fileID that points to a list of words and to relating pieces of information: The Type class Words =================================== fileID: int [list of words] : ArrayList [list of wordCounts] : ArrayList [list of wordIDs] : ArrayList Example of the data in fileID word wordCount wordID instance1 of words 1 He 123 1111 1 llo 321 2 instance2 of words 2 Van 213 666 2 cou 777 932 Example of needed merge fileID wordID fileID wordID 1 2 1 3 wordID=2 2 2 ========> 1 2 2 3 2 2 I cannot see any usage of set-operations such as intersections here because order is needed. Having about three HashMaps makes sorting difficult: from word to wordID in a given fileID from wordID to fileID from wordID to wordCount in a given fileID

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  • Python enumerate built-in error when using the start parameter

    - by TheJuice
    I'm modifying some code that calls enumerate on a list declared via a list comprehension e.g. self.groups = [Groups(self, idx) for idx in range(n_groups)] then later: for idx, group in enumerate(self.groups): # do some stuff but when I change the enumerate call to start at the 2nd list element via the start parameter e.g. for idx, group in enumerate(self.groups[1]): I get an exception: exceptions.TypeError: 'Group' object is not iterable Could someone explain why this is?

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  • Adding Polynomials (Linked Lists)......Bug Help

    - by Brian
    I have written a program that creates nodes that in this class are parts of polynomials and then the two polynomials get added together to become one polynomial (list of nodes). All my code compiles so the only problem I am having is that the nodes are not inserting into the polynomial via the insert method I have in polynomial.java and when running the program it does create nodes and displays them in the 2x^2 format but when it comes to add the polynomials together it displays o as the polynomials, so if anyone can figure out whats wrong and what I can do to fix it it would be much appreciated. Here is the code: import java.util.Scanner; class Polynomial{ public termNode head; public Polynomial() { head = null; } public boolean isEmpty() { return (head == null); } public void display() { if (head == null) System.out.print("0"); else for(termNode cur = head; cur != null; cur = cur.getNext()) { System.out.println(cur); } } public void insert(termNode newNode) { termNode prev = null; termNode cur = head; while (cur!=null && (newNode.compareTo(cur)<0)) { prev = null; cur = cur.getNext(); } if (prev == null) { newNode.setNext(head); head = newNode; } else { newNode.setNext(cur); prev.setNext(newNode); } } public void readPolynomial(Scanner kb) { boolean done = false; double coefficient; int exponent; termNode term; head = null; //UNLINK ANY PREVIOUS POLYNOMIAL System.out.println("Enter 0 and 0 to end."); System.out.print("coefficient: "); coefficient = kb.nextDouble(); System.out.println(coefficient); System.out.print("exponent: "); exponent = kb.nextInt(); System.out.println(exponent); done = (coefficient == 0 && exponent == 0); while(!done) { Polynomial poly = new Polynomial(); term = new termNode(coefficient,exponent); System.out.println(term); poly.insert(term); System.out.println("Enter 0 and 0 to end."); System.out.print("coefficient: "); coefficient = kb.nextDouble(); System.out.println(coefficient); System.out.print("exponent: "); exponent = kb.nextInt(); System.out.println(exponent); done = (coefficient==0 && exponent==0); } } public static Polynomial add(Polynomial p, Polynomial q) { Polynomial r = new Polynomial(); double coefficient; int exponent; termNode first = p.head; termNode second = q.head; termNode sum = r.head; termNode term; while (first != null && second != null) { if (first.getExp() == second.getExp()) { if (first.getCoeff() != 0 && second.getCoeff() != 0); { double addCoeff = first.getCoeff() + second.getCoeff(); term = new termNode(addCoeff,first.getExp()); sum.setNext(term); first.getNext(); second.getNext(); } } else if (first.getExp() < second.getExp()) { sum.setNext(second); term = new termNode(second.getCoeff(),second.getExp()); sum.setNext(term); second.getNext(); } else { sum.setNext(first); term = new termNode(first.getNext()); sum.setNext(term); first.getNext(); } } while (first != null) { sum.setNext(first); } while (second != null) { sum.setNext(second); } return r; } } Here is my Node class: class termNode implements Comparable { private int exp; private double coeff; private termNode next; public termNode(double coefficient, int exponent) { coeff = coefficient; exp = exponent; next = null; } public termNode(termNode inTermNode) { coeff = inTermNode.coeff; exp = inTermNode.exp; } public void setData(double coefficient, int exponent) { coefficient = coeff; exponent = exp; } public double getCoeff() { return coeff; } public int getExp() { return exp; } public void setNext(termNode link) { next = link; } public termNode getNext() { return next; } public String toString() { if (exp == 0) { return(coeff + " "); } else if (exp == 1) { return(coeff + "x"); } else { return(coeff + "x^" + exp); } } public int compareTo(Object other) { if(exp ==((termNode) other).exp) return 0; else if(exp < ((termNode) other).exp) return -1; else return 1; } } And here is my Test class to run the program. import java.util.Scanner; class PolyTest{ public static void main(String [] args) { Scanner kb = new Scanner(System.in); Polynomial r; Polynomial p = new Polynomial(); System.out.println("Enter first polynomial."); p.readPolynomial(kb); Polynomial q = new Polynomial(); System.out.println(); System.out.println("Enter second polynomial."); q.readPolynomial(kb); r = Polynomial.add(p,q); System.out.println(); System.out.print("The sum of "); p.display(); System.out.print(" and "); q.display(); System.out.print(" is "); r.display(); } }

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  • python lists error

    - by mekasperasky
    #defining the magic constants p=0xb7e15163 q=0x9e3779b9 pt=list() pt1=list() ct=list() pt2=list() #pt[0]=0pt1[0]=ct[0]=pt1[1]=ct[1]=0 s=[] l=[] b=8 key=[0,0,0,0,0,0,0,0,0] w=8 t=16 def enc(c,d): for i in range(1,r): A=A+s[0] B=B+s[1] A=A^B A=str(A) B=str(B) A=A[len(B):]+A[:len(B)] B=B^A A=str(A) B=str(B) B=B[len(A):]+B[:len(B)] A=A+s[2*i] B=B+s[2*i+1] ct.append(A) ct.append(B) def denc(): for i in range(r,1): A=ct[0] B=ct[1] B=B-s[2*i+1] B=B[len(c):] + B[:len(c)] B=B^A A=A-s[2*i] A=A[:len(B)]+c[len(B):] A=A^B pt1[1]=B-S[1] pt1[0]=A-S[0] def setup(k): u=w/8 for i in range(b-1,0): l.append(l[i/u:8]+l[8:i/u]+k[i]) s.append(p) for i in range(1,t-1): s.append(s[i-1] + q) i=j=0 A=B=0 for i in range(0,3*t): A=s.append(s[i]+A+B) B=s.append(s[:3]+s[3:]) #B=l.append((l[j]+A+B)) ll=len(str(A))+len(str(B)) B=l.append(l[:ll]+l[ll:]) i=(i+1)%t j=(j+1)%t def pri(g): for k in range(0,w): print g & 0xFF #for i in range(0,b): #key[i]=ct[0]%(255-j) pt1=[raw_input()] pt1=[raw_input()] setup(key) enc(pt1,ct) denc(ct,pt2) print("key") print(key) print("plaintext") printword(pt1[0]),printword(pt1[1]) printword(ct[0]),printword(ct[1]) the list l is always going out of index though it should not . I am not able to take the length of the string A even though it is a string .Once i convert it to string i am not able to add it in s[j]+A+B. How to get around such errors and make the code more hygenic .. This is an rc5 cipher.

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  • Apache POI HWPF Nested Lists?

    - by Mahadevan
    Hi, I used the following code to read list structures from a word file using hwpf. My question is how to read a list structure that is nested ie a list within a list within a list and so on. if (p instanceof ListEntry) { ListEntry entry = (ListEntry) p; outText = entry.text(); outText = "<li>" + outText + "</li>"; // verifca prima e ultimo if (i > 1) { pPrev = range.getParagraph(i - 1); if (!(pPrev instanceof ListEntry)) outText = "<ul>" + outText; } if (i < nParagrafi - 1) { pNext = range.getParagraph(i + 1); if (!(pNext instanceof ListEntry)) outText = outText + "</ul>"; } if (i == nParagrafi - 1) { outText = outText + "</ul>"; }

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  • Dynamically inserted input elements not showing up in ActionResult's FormCollection parameter

    - by roosteronacid
    I am adding input elements to a view, dynamically, using JavaScript. But I am unable to find those inputs in my ActionResult's FormCollection parameter...: public ActionResult Del(FormCollection fc) I am able to find static input elements in the View. And using FireBug in Mozilla FireFox, I can see that the inputs are inside of the form element, in the DOM, and are not floating around somewhere random. How can I access these inputs?

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  • Variable naming for arrays/lists/collections - C#

    - by David Neale
    What should I call a variable instantiated with some type of array? Is it okay to simply use a pluralised form of the type being held? IList<Person> people = new List<Person>(); or should I append something like 'List' to the name? IList<Person> personList = new List<Person>(); Is it generally acceptable to have loops like this? foreach(string item in items) { //Do something }

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  • Cleaner/more effective way to use modulus and creating columned lists

    - by WmasterJ
    I currently have a list (<ul>) of people that I have divided up into two columns. But after finishing the code for it I keept wondering if there is a more effective or clean way to do the same thing. echo "<table class='area_list'><tr>"; // Loop users within areas, divided up in 2 columns $count = count($areaArray); for($i=0 ; $i<$count ; $i++) { // get the modulus value + ceil for uneven numbers $rowCalc = ($i+1) % ceil($count/2); if ($rowCalc == 1) echo "<td><ul>"; // OUTPUT the actual list item echo "<li>{$users[$uid]->profile_lastname}</li>"; if ($rowCalc == 0 && $i!=0) echo "</ul></td>"; } echo "</table>"; Any ideas of how to make this cleaner or do it in another way?

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  • join condition depends on the parameter

    - by sunglim
    Hi. I'm a sql newbie, I use mssql2005 I like to do join Action depnding on input parameter. CREATE PROCEDURE SelectPeriodicLargeCategoryData @CATEGORY_LEVEL CHAR(1), @CATEGORY_CODE VARCHAR(9) AS ... JOIN CATEGORY_AD_SYS CAS WITH(NOLOCK) ON CA.CATEGORY_ID = [[[[[ HERE ]]]] above the sql. if @CATEGORY_LEVEL = 'L' then I like to join on CAS.LCATEGORY else if @CATEGORY_LEVEL = 'M' then I like to join on CAS.MCATEGORY else if @CATEGORY_LEVEL = 'S' then I like to join on CAS.SCATEGORY ... how can I do this?

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  • dictionary of lists of dictionaries in python

    - by Andy
    I'm a perl scripter working in python and need to know a way to do the following perl in python. $Hash{$key1}[$index_value]{$key2} = $value; I have seen the stackoverflow question here: List of dictionaries, in a dictionary - in Python I still don't understand what self.rules is doing or if it works for my solution. My data will be coming from files, and will I will be using regexes to capture to temporary variables until ready to store in the data structure. If you need to ask, the order related to the $index_value is important and would like to be maintained as an integer. Any suggestions are appreciated or if you think I need to rethink data structures with Python that would be helpful.

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  • Visual studio 2008 - Find in files : lists everything twice

    - by Aheho
    In VS2008, I have a web-site project. When I use find in files and search for a string, the find results window will list every occurence twice. What could be causing this? [EDIT] Below is the screen capture from VS. I was searching for the work CommissionBucketProductID within my website project. Notice that each line is returned twice. [EDIT2] In response to your questions. I am only searching within the project, not the whole solution. I currently don't have these files under VSS, although they were in the past.

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  • Python Sets vs Lists

    - by mvid
    In Python, which data structure is more efficient/speedy? Assuming that order is not important to me and I would be checking for duplicates anyway, is a Python set slower than a Python list?

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  • jQuery Connected Sortable Lists, Save Order to MySQL

    - by user300999
    Hello Hoping that using something like this demo it is possible to drag items within and between two columns, and update their order either live or with a "save" button to MySQL. Point being that you can make changes and return to the page later to view or update your ordering. http://pilotmade.com/draggable2.html Doing it for just one column is fine, but when I try to pass the order of both columns, the issue seems to be passing multiple serialized arrays with jQuery to a PHP/MySQL update script. Any insight would be much appreciated.

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  • In python: how to apply itertools.product to elements of a list of lists

    - by Guilherme Rocha
    I have a list of arrays and I would like to get the cartesian product of the elements in the arrays. I will use an example to make this more concrete... itertools.product seems to do the trick but I am stuck in a little detail. arrays = [(-1,+1), (-2,+2), (-3,+3)]; If I do cp = list(itertools.product(arrays)); I get cp = cp0 = [((-1, 1),), ((-2, 2),), ((-3, 3),)] But what I want to get is cp1 = [(-1,-2,-3), (-1,-2,+3), (-1,+2,-3), (-1,+2,+3), ..., (+1,+2,-3), (+1,+2,+3)]. I have tried a few different things: cp = list(itertools.product(itertools.islice(arrays, len(arrays)))); cp = list(itertools.product(iter(arrays, len(arrays)))); They all gave me cp0 instead of cp1. Any ideas? Thanks in advance.

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  • System.Diagnostics.Process to run processes, send parameters and get output

    - by Lily
    Hi, I am trying to call a process using System.Diagnostics.Process, send it a parameter, just for the sake of trying it out i am sending "-h" which should generate a list of help options and I need the output. So far I have tried, ProcessStartInfo startInfo = new ProcessStartInfo("C:\\agfl\\agfl.exe"); startInfo.WindowStyle = ProcessWindowStyle.Normal; startInfo.CreateNoWindow = false; startInfo.Arguments = "-h"; Process.Start(startInfo); Any help please? Thanks :)

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  • Unpacking Argument Lists and Instantiating WTForms objects from web.py

    - by Morris Cornell-Morgan
    After a bit of searching, I've found that it's possible to instantiate a WTForms object in web.py using the following code: form = my_form(**web.input()) web.input() returns a "dictionary-like" web.storage object, but without the double asterisks WTForms will raise an exception: TypeError: formdata should be a multidict-type wrapper that supports the 'getlist' method From the Python documentation I understand that the two asterisks are used to unpack a dictionary of named arguments. That said, I'm still a bit confused about exactly what is going on. What makes the web.storage object returned by web.input() "dictionary-like" enough that it can be unpacked by ** but not "dictionary-like" enough that it can be passed as-is to the WTForms constructor? I know that this is an extremely basic question, but any advice to help a novice programmer would be greatly appreciated!

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