nested

问题 Given two related Django models A and B in a OneToMany relationship: models.py class A(models.Model): name = models.CharField(max_length=5) class B(models.Model): name = models.CharField(max_length=5) a = models.ForeignKey(A) And given (potentially non-optimal) Tastypie resources: api.py class AResource(ModelResource): bs = fields.ToManyField( 'projectname.api.BResource', 'bs', full = True) class Meta: queryset = A.objects.all() class BResource(ModelResource): a = fields.ToOneField( AResource

问题 I have the following snippet of code that I have been banging my head on the wall trying to make it work. I have searched everywhere for a solution, but none of the ones that I have found seem to work. It seems that I have an issue with my mapping for the xml.Unmarshal command as it pertains to nested fields. The code below works for retrieving the first value which is called unit , and is on the top level of the xml code. The other two fields come up as zero, and they are nested two level

问题 I'm working out an algorithm to get permutations like 123 132 213 231 312 321 I'm doing it using nested foreach loops. for (..) { for(..) { for(..) { echo $i . $j . $k . "<br />"; } } } Problem is those # of nested loops are optimized for 3-spot permutations. How can I could I dynamically set the number of nested for loops to generate 4-letter or 5-letter permutations? 回答1: Recursive method is the way to go. But you can also use eval function like: $loop = iteration('i',10) . iteration('j',10

问题 I have inherited a project recently that uses UI-Router to route between states in a management portal site. There are certain complexities to this portal that require our states to primarily be siblings, rather than related parent/child. This has created an issue getting breadcrumbs to work using ncyBreadcrumb. Before I ditch ncy and develop something of my own, I am wondering if there is a way to resolve my issues. The classic ui-router example is the contact list. You may have an index

问题 I have default layout _Layout.cshtml for the most pages. However for some group of pages I would like to have slightly modified default layout. I know I could just copy that file a modified it a bit, but it would mean to duplicate the code and maintain two layout with 99% of same code. I would like to inherit the layout from the default like this: LayoutInherited.cshtml: Layout = "~/Views/Shared/_Layout.cshtml"; ViewBag.BodyContentClassSpecial = ""; @section header{ <style> #body-content {

问题 I have below scenario for my XML. <content> <para>text-1 <emphasis type="bold">text-2</emphasis> text-3</para> </content> I want to parse it like below <content> <p>text-1 <b>text-2</b> text-3</p> </content> I have created my XSLT as below <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="2.0"> <xsl:output method="xml" encoding="ISO-8859-1" indent="no"/> <xsl:template name="para"> <p> <xsl:value-of select="text()" disable-output-escaping="yes"/> <xsl:for-each select=

问题 In Haskell, I want to find how many pairs a,b there are for a given number n, given n = (a^2) * (a^3) . I must give the numbers and it should return the pairs. For example: Main> count 24 0 Main> count 72 1 Main> count 256 2 Main> count 4096 3 Main> count 46656 4 So far I have only done a program that for a number n, finds the sum of all possible combinations for n = (a^2) * (a^3) . For example, for n=2 , (1^2+1^3)+(1^2+2^3)+(2^2+2^3)+(2^2+1^3) . Any suggestions? I am required to implement

问题 I have searched everywhere and I cannot figure out how to create this output using a nested for loop in java: "a ab abc abcd" continued until z this is what I have tried String alphabet = "abcdefghijklmnopqrstuvwxyz"; for(int i = 0; i <= 25; i++) { for(char j = (char)(alphabet.charAt(i)); j<=i; j++) { System.out.print(j); } System.out.println(); } Please help me! 回答1: Here is the answer: for (int x = 'a'; x<='z'; x++) { for (int i = 'a'; i<=x; i++) { System.out.print((char)i); } System.out

问题 Ive look over many threads and cannot seem to put together a solution to my problem. What i would like to do is use two lists to create one output. set Client_ID=BJCH,BORG,FGMS,SVIN,JEFF,NWIL set PartNo=1,2,9,10,12,20 for %%A in (%Client_ID%) do ( for %%B in (%PartNo%) do ( echo %%A %%B ) ) But the output I get is: BJCH 1 BJCH 2 BJCH 9 BJCH 10 BJCH 12 BJCH 20 BORG 1 BORG 2 BORG 9 BORG 10 BORG 12 BORG 20 FGMS 1 FGMS 2 FGMS 9 etc........ What i need is BJCH 1 BORG 2 FGMS 9 SVIN 10 JEFF 12 NWIL

问题 How do I detect the number of threads in OpenMp before the parallel region starts? If I use nested parallelism the environment variable OMP_NUM_THREADS looks like 4,64 . get_nested_num_threads(); #pragma omp parallel { // starting 4 threads #pragma omp parallel { // starting 64 threads for each of the 4 } } This answer leads to my implementation of querying OMP_NUM_THREADS with the following code: #include <string.h> #include <stdlib.h> int get_nested_num_threads(){ char delimiter[] = ",";