categories

问题 We have an exclusive category X and others regular categories Y . What I would like: When someone orders anything from category X , other category items cannot be added to cart and should display a warning category Y products should not be mixed with X . How could I achieve that? I got this code from other post, but its outdated and not satisfactory: <?php // Enforce single parent category items in cart at a time based on first item in cart function get_product_top_level_category ( $product

问题 I'd like to override a method in an Objective C class that I don't have the source to. I've looked into it, and it appears that Categories should allow me to do this, but I'd like to use the result of the old method in my new method, using super to get the old methods result. Whenever I try this though, my method gets called, but "super" is nil... Any idea why? I'm doing iPhone development with the XCode 2.2 SDK. I'm definitely working with an instance of a class, and the method of the class

问题 I have a pandas Series which presently looks like this: 14 [Yellow, Pizza, Restaurants] ... 160920 [Automotive, Auto Parts & Supplies] 160921 [Lighting Fixtures & Equipment, Home Services] 160922 [Food, Pizza, Candy Stores] 160923 [Hair Removal, Nail Salons, Beauty & Spas] 160924 [Hair Removal, Nail Salons, Beauty & Spas] And I want to radically reshape it into a dataframe that looks something like this... Yellow Automotive Pizza 14 1 0 1 … 160920 0 1 0 160921 0 0 0 160922 0 0 1 160923 0 0 0

问题 Database Table: Image I tried this approach to map the category table to EF core: protected override void OnModelCreating(ModelBuilder modelBuilder) { modelBuilder.Entity<Category>(entity => { entity .HasMany(e => e.Children) .WithOne(e => e.Parent) .HasForeignKey(e => e.ParentId); }); } Entity: [Table("Category"] public class Category : EntityBase { [DataType(DataType.Text), MaxLength(50)] public string Name { get; set; } public int? ParentId { get; set; } public int? Order { get; set; }

问题 Can some one explain to me the difference between categories and inheritance in Objective C? I've read the entry in Wikipedia and the discussion on categories there doesn't look any different to that of inheritance. I also looked at the discussion on the topic in the book "Open iPhone Development" and I still don't get it. 回答1: Sometimes, inheritance just seems like more trouble than it is worth. It is correctly used when you want to add something to an existing class that is a change in the

问题 is there any way to create category via magmi without adding any products to the category ? Also If any one have csv header to create category via magmi kindly share with me it will help me a lot.. Thanks in advance.. 回答1: Part 1: Magmi does not import categories only, it is able to create categories on the fly during item import that's a big difference. IE : magmi imports ITEMS and can auto create categories for ITEMS being imported. If you want to import categories, use another magento

问题 I'm successfully filtering all my WordPress posts (in a custom page template) by Likes (count) with a Custom Plugin (and meta_key) which also let me filter the most liked posts in a specific category with the following if (isset($_GET['category'])) { $args = array( 'meta_key' => '_recoed', 'meta_compare' => '>', 'meta_value' => '0', 'orderby' => 'meta_value_num', 'order' => 'DESC', 'category_name' => sanitize_text_field($_GET['category']), 'paged' => $paged ); } query_posts($args); get

问题 I installed (pip) django-categories today, and added a field in my model: categories = models.ManyToManyField('categories.Category', blank=True, null=True) before running syncdb . I have Categories in my admin, and I'm not seeing any file errors for treeTable or expand/collapse files, but I'm only seeing 1 level deep: In the source for the page, I can see the child rows, but they don't show in the admin. Nor does a expand/collapse toggle. The following doesn't seem to be true, either. I'm

问题 Consider this simple data set whose columns are cut by quantiles. kyle = pd.DataFrame({'foo':np.random.randint(0,100,100),'boo':np.random.randint(0,100,100)}) kyle.loc[:,'fooCut'] = pd.qcut(kyle.loc[:,'foo'], np.arange(0,1.1,.1)) kyle.loc[:,'booCut'] = pd.qcut(kyle.loc[:,'boo'], np.arange(0,1.1,.1)) Previous versions of Pandas handled the below as expected... pd.crosstab(kyle.fooCut,kyle.booCut) After updating to version '0.24.2', the above is throwing me a TypeError: Cannot cast array data

问题 Although the latest releases of Doxygen claim better handling of Objective-C categories, it still seems to choke on categories in my source code. I'm wondering if someone has gotten it to document categories properly. As an example, I have a category on NSString defined as: @interface NSString (CCFExtensions) with an interface file named NSString_CCFExtensions.h and implementation file NSString_CCFExtension.m Doxygen will reference the file with the superclass; but none of the category