Search Results

Search found 3602 results on 145 pages for 'jagged arrays'.

Page 66/145 | < Previous Page | 62 63 64 65 66 67 68 69 70 71 72 73  | Next Page >

  • How detect length of a numpy array with only one element?

    - by mishaF
    I am reading in a file using numpy.genfromtxt which brings in columns of both strings and numeric values. One thing I need to do is detect the length of the input. This is all fine provided there are more than one value read into each array. But...if there is only one element in the resulting array, the logic fails. I can recreate an example here: import numpy as np a = np.array(2.3) len(a) returns an error saying: TypeError: len() of unsized object however, If a has 2 or more elements, len() behaves as one would expect. import numpy as np a = np.array([2.3,3.6]) len(a) returns 2 My concern here is, if I use some strange exception handling, I can't distinguish between a being empty and a having length = 1.

    Read the article

  • Help me to break array

    - by Wazzy
    Please Help me getting only emails from this array Mentioning array not in code tags is intentional-Sorry for that array(16) { [0]=> string(273) ""guid":"","contactId":"44","contactName":"_, atri","email":"[email protected]","emaillink":"http:\/\/mrd.mail.yahoo.com\/compose?To=atri_megrez%40yahoo.com","isConnection":false,"connection":"","displayImg":null,"msgrID":"atri_megrez","msgrStatus":"","isMsgrBuddy":122}," [1]=> string(260) ""guid":"","contactId":"100","contactName":"afrin","email":"[email protected]","emaillink":"http:\/\/mrd.mail.yahoo.com\/compose?To=fida_cuty123%40yahoo.com","isConnection":false,"connection":"","displayImg":null,"msgrID":"","msgrStatus":"","isMsgrBuddy":false}," [2]=> string(258) ""guid":"","contactId":"101","contactName":"afrin","email":"[email protected]","emaillink":"http:\/\/mrd.mail.yahoo.com\/compose?To=waliyani%40yahoo.com","isConnection":false,"connection":"","displayImg":null,"msgrID":"","msgrStatus":"","isMsgrBuddy":false}," }

    Read the article

  • Remove duplicates in a String [] list f#

    - by Jose Maria de la Torre
    I need some noob help... I have a String[] list (a list that each element is a Array of strings) I wish to remove all duplicates in the list. But to see if they are duplicates I need to see the fist element in the array. what I have tried is let NotDuplicated = Duplicated.[0] |> Seq.distinct let NotDuplicated = Duplicated |> Seq.distinctBy id but nothing is working... can you guys please help me.. thanks!!

    Read the article

  • php transform array into multidim array

    - by fverswijver
    So I'm working on a website with Doctrine as ORM and I get the following array back as a result: Array ( [0] => Array ( [c_cat_id] => 1 [c_title] => Programas e projetos [p_menu] => PBA BR 163 [p_page_id] => 1 ) [1] => Array ( [c_cat_id] => 1 [c_title] => Programas e projetos [p_menu] => Outros projetos [p_page_id] => 3 ) ) Is it possible to transform this array (in PHP) to something like this: Array ( [0] => Array ( [c_cat_id] => 1 [c_title] => Programas e projetos [pages] => Array ([p_page_id] => 1 [p_menu] => PBA BR 163, [p_page_id] => 3 [p_menu] => Outros projetos)) Thanks for your help, always eager to learn new ways of doing things and that's why I love StackOverflow ;)

    Read the article

  • Parsing array data

    - by Sam
    I am trying to parse this array data that way generated from JQuery and JSON. Array ( [d] = Array ( [0] = Array ( [order] = 1 ) [1] => Array ( [order] => 2 ) [2] => Array ( [order] => 3 ) [3] => Array ( [order] => 4 ) [4] => Array ( [order] => 5 ) ) ) I am trying to save the above date into a mysql table, but cannot seem to parse the data properly to be inserted into the database. Can anyone help?

    Read the article

  • php Checking if value exists in array of array

    - by Mark
    I have an array within an array. $a = array ( 0 => array ( 'value' => 'America', ), 1 => array ( 'value' => 'England', ), ) How do I check if 'America' exists in the array? The America array could be any key, and there could be any number of subarrays, so a generalized solution please. Looking on the php manual I see in_array, but that only works for the top layer. so something like in_array("America", $a) would not work. Thanks.

    Read the article

  • How to get Ponter/Reference semantics in Scala.

    - by Lukasz Lew
    In C++ I would just take a pointer (or reference) to arr[idx]. In Scala I find myself creating this class to emulate a pointer semantic. class SetTo (val arr : Array[Double], val idx : Int) { def apply (d : Double) { arr(idx) = d } } Isn't there a simpler way? Doesn't Array class have a method to return some kind of reference to a particular field?

    Read the article

  • VB 2008 - Index was outside the bounds of the array

    - by Jan
    Hey guys I'm having a problem while reading a config.cfg file of my program. I can read the 23. char of the file but I can't read the 24. char (last char in file). This is the code: Dim CFGReader2 As System.IO.StreamReader CFGReader2 = _ My.Computer.FileSystem.OpenTextFileReader(CurDir() & "\Config.cfg") Dim Server(2) As String Server(0) = CFGReader2.ReadToEnd.Chars(23)//This part works If Server(0) = 0 Then Server(1) = CFGReader2.ReadToEnd.Chars(24)//This part results in "Index was outside the bounds of the array". ElseIf Server(0) = 1 Then Server(2) = CFGReader2.ReadToEnd.Chars(24)//This part results in "Index was outside the bounds of the array". Server(1) = 10 + Server(2) ElseIf Server(0) = 2 Then Server(2) = CFGReader2.ReadToEnd.Chars(24)//This part results in "Index was outside the bounds of the array". Server(1) = 20 + Server(2) ElseIf Server(0) = 3 Then Server(2) = CFGReader2.ReadToEnd.Chars(24)//This part results in "Index was outside the bounds of the array". Server(1) = 30 + Server(2) End If And this is the file: Language = 2 Server = 11 Thanks for the answer! Frosty

    Read the article

  • Echo a multidimensional array in PHP

    - by Jennifer
    I have a multidimensional array and I'm trying to find out how to simply "echo" the elements of the array. The depth of the array is not known, so it could be deeply nested. In the case of the array below, the right order to echo would be: This is a parent comment This is a child comment This is the 2nd child comment This is another parent comment This is the array I was talking about: Array ( [0] => Array ( [comment_id] => 1 [comment_content] => This is a parent comment [child] => Array ( [0] => Array ( [comment_id] => 3 [comment_content] => This is a child comment [child] => Array ( [0] => Array ( [comment_id] => 4 [comment_content] => This is the 2nd child comment [child] => Array ( ) ) ) ) ) ) [1] => Array ( [comment_id] => 2 [comment_content] => This is another parent comment [child] => Array ( ) ) )

    Read the article

  • Array "tree" creation from db table

    - by Tural Teyyuboglu
    Trying to create array tree for db driven navigation. Getting following errur: array_key_exists() expects exactly 2 parameters, 1 given on line if (!array_key_exists($tree[$parent]['children'][$id])) Function looks like that $tree = array(); $sql = "SELECT id, parent, name FROM menu WHERE parent ... etc.... "; $results = mysql_query($sql) or die(mysql_error()); while(list($id, $parent, $name) = mysql_fetch_assoc($results)) { $tree[$id] = array('name' => $name, 'children' => array(), 'parent' => $parent); if (!array_key_exists($tree[$parent]['children'][$id])) { $tree[$parent]['children'][$id] = $id; } } Db structure How can I fix that? Whats wrong in this function?

    Read the article

  • NSTableView doesn't populate with array objects until a new object is added via the controller

    - by Luke
    I have an NSTableView and an array controller set up as shown here, using cocoa bindings: https://developer.apple.com/library/mac/documentation/Cocoa/Conceptual/TableView/PopulatingViewTablesWithBindings/PopulatingView-TablesWithBindings.html#//apple_ref/doc/uid/10000026i-CH13-SW3 In my app delegate during applicationDidFinishLaunching I have the following snippet in here, initialising the array and filling it with objects array = [[NSMutableArray alloc] init]; SomeObject* foo = [[Object alloc] init]; foo.text = @"sup"; [array addObject:foo]; //Repeat this a few times However, when I build the app and run it I end up with an empty table. However, if I bind a button to the array controller's add: input and click it during runtime (this adds a new object to the array and table) then the table will show the new object first, with the objects added during applicationDidFinishLaunching following it. Why does this happen? And is there a way to make my table populate without having to add an element first?

    Read the article

  • Changes to data inside class not being shown when accessed from outside class.

    - by Hypatia
    I have two classes, Car and Person. Car has as one of its members an instance of Person, driver. I want to move a car, while keeping track of its location, and also move the driver inside the car and get its location. However, while this works from inside the class (I have printed out the values as they are calculated), when I try to access the data from main, there's nothing there. I.e. the array position[] ends up empty. I am wondering if there is something wrong with the way I have set up the classes -- could it be a problem of the scope of the object? I have tried simplifying the code so that I only give what is necessary. Hopefully that covers everything that you would need to see. The constructer Car() fills the offset array of driver with nonzero values. class Car{ public: Container(float=0,float=0,float=0); ~Container(); void move(float); void getPosition(float[]); void getDriverPosition(float[]); private: float position[3]; Person driver; float heading; float velocity; }; class Person{ public: Person(float=0,float=0,float=0); ~Person(); void setOffset(float=0,float=0,float=0); void setPosition(float=0,float=0,float=0); void getOffset(float[]); void getPosition(float[]); private: float position[3]; float offset[3]; }; Some of the functions: void Car::move(float time){ float distance = velocity*time; location[0] += distance*cos(PI/2 - heading); location[1] += distance*sin(PI/2 - heading); float driverLocation [3]; float offset[3]; driver->getOffset(offset); for (int i = 0; i < 3; i++){ driverLocation[i] = offset[i] + location[i]; } } void Car::getDriverPosition(float p[]){ driver.getPosition(p); } void Person::getPosition(float p[]){ for (int i = 0; i < 3; i++){ p[i] = position[i]; } } void Person::getOffset(float o[]){ for (int i = 0; i < 3; i++){ o[i] = offset[i]; } } In Main: Car * car = new Car(); car->move(); float p[3]; car->getDriverPosition(p); When I print driverLocation[] inside the move() function, I have actual nonzero values. When I print p[] inside main, all I get are zeros.

    Read the article

  • Determining whether one array contains the contents of another array in ruby

    - by Andrew Grimm
    In ruby, how do I test that one array not only has the elements of another array, but contain them in that particular order? correct_combination = [1, 2, 3, 4, 5] [1, 5, 8, 2, 3, 4, 5].function_name(correct_combination) # => false [8, 10, 1, 2, 3, 4, 5, 9].function_name(correct_combination) # => true I tried using include, but that is used to test whether [1,2,3].include?(2) is true or not.

    Read the article

  • How do I generate an array from a string representation of that array?

    - by question_about_the_problem
    I want to generate the array $result_array. There is no error at the page, but not works! that not works ! //BOF: Result Array $result_array = ''; $result_array .= '"messages" => "' . $errors .'",'; $result_array .= '"this_addr_type" => "' . (int)$_REQUEST['edit'] .'",'; if (ACCOUNT_GENDER == 'true') { $result_array .= '"gender_male" => "' . $male .'",'; $result_array .= '"gender_female" => "' . $female .'",'; } $result_array .= '"firstname" => "' . $entry['entry_firstname'] .'",'; $result_array .= '"lastname" => "' . $entry['entry_lastname'] .'",'; if (ACCOUNT_COMPANY == 'true') { $result_array .= '"company" => "' . $entry['entry_company'] .'",'; } $result_array .= '"street_address" => "' . $entry['entry_street_address'] .'",'; if (ACCOUNT_SUBURB == 'true') { $result_array .= '"suburb" => "' . $entry['entry_suburb'] .'",'; } $result_array .= '"postcode" => "' . $entry['entry_postcode'] .'",'; $result_array .= '"city" => "' . $entry['entry_city'] .'",'; if (ACCOUNT_STATE == 'true') { $result_array .= '"state" => "' . $entry['entry_state'] .'",'; } $result_array .= '"country" => "' . $entry['entry_country_id'] .'"'; //EOF: Result Array $_RESULT = array($result_array); that works $_RESULT = array( "this_addr_type" => (int)$_REQUEST['edit'], "gender_male" => $male, "gender_female" => $female, "firstname" => $entry["entry_firstname"], "lastname" => $entry["entry_lastname"], "company" => $entry["entry_company"], "street_address" => $entry["entry_street_address"], "suburb" => $entry["entry_suburb"], "postcode" => $entry["entry_postcode"], "city" => $entry["entry_city"], "state" => $entry["entry_state"], "country" => $entry["entry_country_id"] );

    Read the article

  • Inserting and removing a string into/from an array

    - by alex
    Hello all! I have an array and variable. If the variable does not exist in the array it has to be added, otherwise it has to be removed. Why the following code does not work? $ar = ["a","b","c"]; $vr = "b"; foreach ($ar as $i => $value) { if ($value == $vr) { unset ($ar[$i]); } else { $ar[] = $vr; $ar = array_unique($ar); } } Thanks.

    Read the article

  • Why does C++ behave this way?

    - by eSKay
    #include<stdio.h> int b = 0; class A { public: int a;}; class B: public A { int c; int d; public: B(){ b++; a = b; printf("B:%d\n",b); } }; int main() { A* a = new B[10]; B* b = new B[10]; printf("\n%d", a->a); a++; printf("\n%d", a->a); // prints junk value printf("\n\n%d", b->a); b++; printf("\n%d", b->a); return 0; } The second printf prints a junk value. It should figure that it is pointing to an object of type B and increment by the sizof(B). Why does that not happen?

    Read the article

  • Calling a method with an array value in PHP

    - by Saif Bechan
    I have a class like this class someclass{ public function somemethod(){} } Now I have an array: $somearray['someclass'] = new someclass(); $somearray['somemethod'] = 'somemethod'; How can I fire them, I tried the following: $somearray['someclass']->$somearray['somemethod'](); usign this I get the following error: Fatal error: Method name must be a string in ...................... Anyone have an idea on how to do this?

    Read the article

  • Summary statistics in visual basic

    - by ben
    Below I am trying to write a script the goal of which is to calculate some summary statistics for a few different columns of numbers. I have gotten some help on it up to the "Need help below" mark. But beyond that I am flabergasted as to how to calculate the simple stats (sum, mean, standard deviation, coefficient of variation). I know VB has scripts for these stats, which I have included in my code, but I guess I need to do some extra declaring or something. Advice much appreciated. Thanks. Sub TOAinput() Const n As Integer = 648 Dim stratum(n), hybrid(n), acres(n), hhsz(n), offinc(n) Dim s1 As Integer Dim s2 As Integer Dim i As Integer For i = 1 To n stratum(i) = Worksheets("hhid level").Cells(i + 1, 2).Value Next i s1 = 0 s2 = 0 For i = 1 To n If stratum(i) = 1 Then s1 = s1 + 1 Else: s2 = s2 + 1 End If Next i Dim acres1(), hhsz1(), offinc1(), acres2(), hhsz2(), offinc2() ReDim acres1(s1), hhsz1(s1), offinc1(s1), acres2(s2), hhsz2(s2), offinc2(s2) 'data infiles: acres, hh size, off-farm income, For i = 1 To n acres(i) = Worksheets("hhid level").Cells(i + 1, 4).Value hhsz(i) = Worksheets("hhid level").Cells(i + 1, 5).Value offinc(i) = Worksheets("hhid level").Cells(i + 1, 6).Value Next i s1 = 0 s2 = 0 For i = 1 To n If stratum(i) = 1 Then s1 = s1 + 1 acres1(s1) = acres(i) hhsz1(s1) = hhsz(i) offinc1(s1) = offinc(i) Else: s2 = s2 + 1 acres2(s2) = acres(i) hhsz2(s2) = hhsz(i) offinc2(s2) = offinc(i) End If Next i '**************************** 'Need help below '**************************** Dim sumac1, sumac2, mhhsz1, mhhsz2, cvhhsz1, cvhhsz2 sumac1 = Sum(acres1) sumac2 = Sum(acres2) mhhsz1 = Average(hhsz1) mhhsz2 = Average(hhsz2) cvhhsz1 = StDev(hhsz1) / Average(hhsz1) cvhhsz2 = StDev(hhsz2) / Average(hhsz2) End Sub

    Read the article

  • A question about matrix manipulation

    - by appi
    Given a 1*N matrix or an array, how do I find the first 4 elements which have the same value and then store the index for those elements? PS: I'm just curious. What if we want to find the first 4 elements whose value differences are within a certain range, say below 2? For example, M=[10,15,14.5,9,15.1,8.5,15.5,9.5], the elements I'm looking for will be 15,14.5,15.1,15.5 and the indices will be 2,3,5,7.

    Read the article

  • Iterating Through a jQuery Object Array

    - by DeltaFox
    I know this has been asked and answered a couple times already, but I'm still confused about how to reference the current object when iterating over a jQuery array. For example, the following code gives me the error "TypeError: genH3Array[i].next is not a function". What is the right way to reference the current array object? var genH3Array = $('#Generation_II').parent(); genH3Array.push($('#Generation_III').parent());; genH3Array.push($('#Generation_IV').parent()) $.each(genH3Array, function(i, value) { if(genH3Array[i].next().attr("align") == "center") { genH3Array[i].next().next().next().insertBefore(heading.next()) } genH3Array[i].next().next().insertBefore(heading.next()) genH3Array[i].next().insertBefore(heading.next()) })

    Read the article

  • typedef fixed length array

    - by Rajorshi
    Hi, I have to define a 24-bit data type.I am using char[3] to represent the type. Can I typedef char[3] to type24? I tried it in a code sample. I put typedef char[3] type42; in my header file. The compiler did not complain about it. But when I defined a function void foo(type24 val) {} in my C file, it did complain. I would like to be able to define functions like type24_to_int32(type24 val) instead of type24_to_int32(char value[3]).

    Read the article

  • Constant time change first k elements of an array in C++?

    - by Johny 96
    Let's suppose I have an array: bool eleme[1000000] = {false}; and at some point in my code I change some of the first of the n elements of this array to true. Afterwards I want to be sure that all elements of the array are false. So I do: for (int i =0; i < n; ++i) eleme[i] = false; which costs T(n). Is there a way to do this in constant time? E.g. something like make_false(eleme, n);

    Read the article

  • How do you detach an array of strings from shared memory? C

    - by Tim
    I have: int array_id; char* records[10]; // get the shared segment if ((array_id = shmget(IPC_PRIVATE, 1, 0666)) == -1) { perror("Array Creating"); } // attach records[0] = (char*) shmat(array_id, (void*)0, 0); if ((int) *records == -1) { perror("Array Attachment"); } which works fine, but when i try and detach i get an "invalid argument" error. // detach int error; if( (error = shmdt((void*) records[0])) == -1) { perror(array detachment); } any ideas? thank you

    Read the article

  • How to save output from the shell?

    - by user2971553
    I want to save this in a file form the shell: Type the number of steps N 10 Type the initial values ti and ai 0 1 23.000000 24.000000 46.000000 576.000000 69.000000 13824.000000 92.000000 331776.000000 115.000000 7962624.000000 138.000000 191102976.000000 161.000000 4586471424.000000 184.000000 110075314176.000000 207.000000 2641807540224.000000 230.000000 63403380965376.000000 253.000000 1521681143169024.000000 how to do it? it does not work by just typing: >./a.out>lalalla.txt

    Read the article

< Previous Page | 62 63 64 65 66 67 68 69 70 71 72 73  | Next Page >