indexing

问题 I getting error PHP Notice: Undefined index: price in /home/***/public_html/catalog/view/theme/default/template/checkout/cart.tpl on line 57 What do I have to look up to correct this error. Thank you 54 <div> 55 <?php foreach ($product['option'] as $option) { ?> 56 <?php $option_table[$option['name']] = $option['value']; ?> **57 <?php $option_table_price[$option['price']] = $option['price']; ?>** 58 <?php if($option['name'][0] != 's') { ?> 59 - <small><?php echo $option['name']; ?>: <?php

问题 I getting error PHP Notice: Undefined index: price in /home/***/public_html/catalog/view/theme/default/template/checkout/cart.tpl on line 57 What do I have to look up to correct this error. Thank you 54 <div> 55 <?php foreach ($product['option'] as $option) { ?> 56 <?php $option_table[$option['name']] = $option['value']; ?> **57 <?php $option_table_price[$option['price']] = $option['price']; ?>** 58 <?php if($option['name'][0] != 's') { ?> 59 - <small><?php echo $option['name']; ?>: <?php

问题 This question already has answers here : Closed 7 years ago . Possible Duplicate: Finding first and last index of some value in a list in Python Hi I was wondering if someone could help me with Python. I am trying to create a code that returns the last index of the last occurrence of an item in a list in a recursive way. So in a list [1,2,3,4,5,2] the last it should return 4 . It only takes in 2 variables which are the list and the item that it is searching for. If it does not find any

问题 After asking this question, it received a comment about how you could do something like this: >>> def a(n): print(n) return a >>> b = a(3)(4)(5) 3 4 5 Is it possible to use this or similar concepts to make it possible to index lists like my_list(n) instead of my_list[n] ? 回答1: You'd have to use a custom class, and give it a __call__ special method to make it callable. A subclass of list would do nicely here: class CallableList(list): def __call__(self, item): return self[item] You cannot use

问题 Suppose I have a 5-d matrix C. I use the following code to get a min matrix C3 (each element of C3 represents the minimum of dimension 1,2,3): [C1, I1] = min(C,[],1); [C2, I2] = min(C1, [], 2); [C3, I3] = min(C2, [], 3); The question is how to get the index of the minimum in terms of each dimension? For example consider this simpler case: C = [1,2;3,4] The minimum here is 1, its index in dimension 1 is 1 (first row) and in dimension 2 also 1 (first column). I know that changing the sequence

问题 I want to be able to get the multiple index values of a certain string, for example; System.out.print("Enter an Integer:"); Scanner input = new Scanner(System.in); String primeNumber = input.nextLine(); System.out.printf("\n%s",primeNumber.indexOf('2')); when an input of 2589729872 is entered, I get a result of 0. I want to obtain 0,5 and 9. How would I go about this? 回答1: Scanner input = new Scanner(System.in); String primeNumber = input.nextLine(); int index = primeNumber.indexOf('2');

问题 I have a problem with my new site. (www.example.com) Basically, when I look at my google analytics page, it considers mysite/index.html and mysite/ to be two different pages. This is problematic mainly for SEO reasons. Is there a way to append the two or make the root automatically redirect to mysite/index.html? I figured you probably can do this with either a 301 redirect or by modifying the .htaccess file. My host is iPage by the way. Thanks 回答1: You are able to accomplish this on an

问题 This is an indirect indexing problem. It can be solved with a list comprehension. The question is whether, or, how to solve it within numpy, When data.shape is (T,N) and c.shape is (T,K) and each element of c is an int between 0 and N-1 inclusive, that is, each element of c is intended to refer to a column number from data . The goal is to obtain out where out.shape = (T,K) And for each i in 0..(T-1) the row out[i] = [ data[i, c[i,0]] , ... , data[i, c[i,K-1]] ] Concrete example: data = np

问题 I have two multiindexed dataframes, one with two levels and one with three. The first two levels match in both dataframes. I would like to find all values from the first dataframe where the first two index levels match in the second dataframe. The second data frame does not have a third level. The closest answer I have found is this: How to slice one MultiIndex DataFrame with the MultiIndex of another -- however the setup is slightly different and doesn't seem to translate to this case.

问题 I have two multiindexed dataframes, one with two levels and one with three. The first two levels match in both dataframes. I would like to find all values from the first dataframe where the first two index levels match in the second dataframe. The second data frame does not have a third level. The closest answer I have found is this: How to slice one MultiIndex DataFrame with the MultiIndex of another -- however the setup is slightly different and doesn't seem to translate to this case.