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问题 I was going through all the other threads about undefined reference and I was unable to figure out why this piece of codes is not working. I am basically trying to run a function from a module into a subroutine in the main program. But I keep getting an error Main: program main use m1 implicit none integer, dimension(:,:), allocatable :: A,AFun integer :: n,i,j print *, "enter value for n" read *, n do i=1,n do j=1,n A(i,j)=i**2-j**3 end do end do print *, "Matrix A: " call prMat(A,n) call

问题 This question already has answers here : PHP alternative to session_is_registered (4 answers) Closed 4 years ago . How to correct the programme Error will display Call to undefined function session_is_registered() in /home/rajesh/public_html/lib/common.php on line 40 this is the 40th line if(!session_is_registered("u_type")) { session_register("u_type"); } if(trim($_REQUEST['u_type']) != "") { $_SESSION['u_type'] = trim($_REQUEST['u_type']); } another error configures.php am upload the file

问题 I am using the code show below for a search and it is working. But when I try it to display another page with other results it says that “the index is undefined". I'm using again in this file but it does not solve anything. Can anyone tell me why is this happening? The error is: Notice: Undefined index: pesquisa in J:\xampp\htdocs\pesquisa3.php on line 32 The code is: <?php session_start(); if (!(isset($_SESSION['login']) && $_SESSION['login'] != '')) { header ("Location: login.php"); } ?>

问题 I have a Rails 4 application. I have a search function with a select field. Now I'm getting this error: NoMethodeError: undefined method 'map' for "5":String: select * from users inner join user_texts on users.id = user_id where text_id = ? Here's view: <% form_tag user_path do <% select_tag :text_id, Option_from_collection_for_select(text.all, :id, :name, params[:text_id]), include_blank: true %> <%= button_to '#', class: 'btn btn-default' do %> <% t(:find) %> <% end %> Here's controller:

问题 Here is the window : so now, when I scroll down (the children appear in the same fashion as displayed above, all way long), I see what I want: but I just fail to access it. Why? Here the code, in a function that lies in a js folder: function update_match(slot, match, s) { $("#match" + slot + " i").text(match); console.log(window); console.log(window.saves1); // undefined console.log(window.external.saves1); // undefined (slot == 1) ? window.saves1.item = s : window.saves2.item = s; } The

问题 I'm a beginner in PHP. And i'm working on project with this directories hierarchy : model , control , view and helper folders are in my project folder Now i'm trying to write a file init.php and require_once it in each of control and model files, here's my init.php <?php $current_dir = basename(getcwd()); $model_dir = "model"; $helper_dir = "helper"; function require_helper(){ $handle = opendir("../{$helper_dir}"); while($file = readdir($handle)){ if($file != "." && $file != ".."){ require

问题 I know to check for the existence of a cookie before I try to use it, but in this case If I set a cookie and then try to use it immediately afterwards without checking, the code works, however I get an "undefined index" warning in my php.log. The code below determines if the device is a computer or mobile and sets a cookie. It then checks the cookie value and if a mobile it redirects to a page. (If not, it will output a page and then show the content within a frame). <?php // Determine if

问题 So when I launch the app I get the fatal exception main saying that there is no empty constructor. Then when I add the empty constructor it gives me that "The constructor SQLiteOpenHelper() is undefined" error. This is my first app ever so I have no clue what to do. Here's the code: package com.example.lightalarmclock; import android.app.Activity; import android.content.Context; import android.content.Intent; import android.content.SharedPreferences; import android.database.sqlite

问题 Dan's answer to this question: Is There Anything Like a Templatized Case-Statement takes a DefaultType template parameter. Is it possible to pass something there which will force a compile time fail? For example, given this templatized function: template <typename T, typename R = enable_if_t<is_integral<T>::value, int>> R foo(T bar) {return static_cast<R>(bar);} This code will compile fine: foo(13) But this code will fail: foo(13.0) . The reason that foo(13.0) will fail at compile time is

问题 I am developing a test suite for an AngularJS app, and have hit a strange problem while writing one of the test scripts which I can't seem to work out. The test is: it('should navigate to the Charts page', function() { console.log("Start Charts page test"); browser.waitForAngularEnabled(false); browser.wait(EC.elementToBeClickable(chartsMenuBtn), 5000).then( browser.actions(). mouseMove(chartsMenuBtn). chartsMenuBtn.click(). browser.wait(EC.urlIs(site + '/#/charts'), 5000). perform() ); })