structure

问题 I tried to structure my last sizeable MVC project following a best practice approach, but didn't quite understand what I was doing. It has a Data, Business and Web (MVC) project, but the controllers contain most of the code, the Data layer uses NHibernate and has a few repositories responsible for too many things, and the Business layer is a dumping ground for anything that doesn't belong in the other two projects. It works, but I feel it could have been setup better - the main things I'm

问题 It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center. Closed 8 years ago . Can you give some example or a link to a topic. 回答1: A predicate is a C++ function returning a boolean or an object having a bool operator() member. A unary predicate takes one argument, a binary takes two, and

问题 I started populating an en yaml file in Rails and I can already tell it will get messy and out of hand before too long. Is there a convention to keeping this file organized? So far I have this structure: language: resource: pages: # index, show, new, edit page html elements: # h1, title activerecord: attributes: model: property: Now I have the following things that I want to fit into this structure but I'm unsure how to: Navigation Button text (save changes, create account, etc) Error

问题 A function call returning a structure is an rvalue expression, but what about its members? This piece of code works well with my g++ compiler, but gcc gives a error saying "lvalue required as left operand of assignment": struct A { int v; }; struct A fun() { struct A tmp; return tmp; } int main() { fun().v = 1; } gcc treats fun().v as rvalue, and I can understand that. But g++ doesn't think the assignment expression is wrong. Does that mean fun1().v is lvalue in C++? Now the problem is, I

问题 If I have a source.c file with a struct: struct a { int i; struct b { int j; } }; How can this struct be used in another file (i.e. func.c )? Should I create a new header file, declare the struct there and include that header in func.c ? Or should I define the whole struct in a header file and include that in both source.c and func.c ? How can the struct be declared extern in both files? Should I typedef it? If so, how? 回答1: if this structure is to be used by some other file func.c how to do

问题 I see a lot of Vue.js projects using this structure: ├── main.js ├── api │ └── index.js │ └── services #containing files with api-calls │ ├── global.js │ ├── cart.js │ └── messages.js ├── components │ ├── Home.vue │ ├── Cart.vue │ ├── Messages.vue │ └── ... └── store ├── store.js ├── actions.js #actions to update vuex stores ├── types.js └── modules ├── global.js ├── cart.js └── ... (An example with this structure is 'Jackblog'.) So, for example, Cart.vue wants to update the inCart data in

问题 I see a lot of Vue.js projects using this structure: ├── main.js ├── api │ └── index.js │ └── services #containing files with api-calls │ ├── global.js │ ├── cart.js │ └── messages.js ├── components │ ├── Home.vue │ ├── Cart.vue │ ├── Messages.vue │ └── ... └── store ├── store.js ├── actions.js #actions to update vuex stores ├── types.js └── modules ├── global.js ├── cart.js └── ... (An example with this structure is 'Jackblog'.) So, for example, Cart.vue wants to update the inCart data in

问题 I've been struggling with this for days and I can't figure out why it doesn't work. I'm trying to read numbers from file with numbers written like this: 0 2012 1 1 2000.000000 0 2012 1 1 3000.000000 1 2012 1 1 4500.000000 my structure: struct element{ int id; int sign; int year; int month; double amount; struct element *next; }; struct queue{ struct element *head; struct element *tail; struct element *head2; struct element *temp; struct element *temph; int size; }; (head2, temp and temph are

问题 Using the given routines (how to load Matlab .mat files with scipy), I could not access deeper nested structures to recover them into dictionaries To present the problem I run into in more detail, I give the following toy example: load scipy.io as spio a = {'b':{'c':{'d': 3}}} # my dictionary: a['b']['c']['d'] = 3 spio.savemat('xy.mat',a) Now I want to read the mat-File back into python. I tried the following: vig=spio.loadmat('xy.mat',squeeze_me=True) If I now want to access the fields I get

问题 In my project I need to know what a zlib header looks like. I've heard it's rather simple but I cannot find any description of the zlib header. For example, does it contain a magic number? 回答1: Link to RFC 0 1 +---+---+ |CMF|FLG| +---+---+ CMF (Compression Method and flags) This byte is divided into a 4-bit compression method and a 4- bit information field depending on the compression method. bits 0 to 3 CM Compression method bits 4 to 7 CINFO Compression info CM (Compression method) This