structure

I am aware that in C99 you can initialize members of the structure using member name as follows : struct myStruct { int i; char c; float f; }; So following is valid : struct myStruct m = {.f = 10.11, .i = 5, .c = 'a'}; Also it is said that uninitialised members will be set to 0 . So struct myStruct m = {.f = 10.11, .c = 'a'}; here i will be set to 0 But, for the following : struct myStruct m = {.f = 10.11, .c = 'a', 6}; i is still initialized to 0. What is the reason if we do such compound initialization. This is covered in the draft C99 standard section 6.7.8 Initialization , basically if the

I'm working with Intel SGX which has predefined structures. I need to send these structures over a network connection which is operated by using boost::asio . The structure that needs to be send has the following format: typedef struct _ra_samp_request_header_t{ uint8_t type; /* set to one of ra_msg_type_t*/ uint32_t size; /*size of request body*/ uint8_t align[3]; uint8_t body[]; } ra_samp_request_header_t; For the sending and receiving, the methods async_write and async_async_read_some are used boost::asio::async_write(socket_, boost::asio::buffer(data_, max_length), boost::bind(&Session:

sqlContext总的一个过程如下图所示： SQL语句经过SqlParse解析成 Unresolved LogicalPlan； 使用 analyzer结合数据数据字典（catalog）进行绑定，生成 resolved LogicalPlan； 使用 optimizer对 resolved LogicalPlan进行优化，生成 optimized LogicalPlan； 使用 SparkPlan将 LogicalPlan转换成 PhysicalPlan； 使用 prepareForExecution()将 PhysicalPlan转换成可执行物理计划； 使用 execute()执行 可执行物理计划； 生成SchemaRDD。 SQL语句经过HiveQl.parseSql解析成Unresolved LogicalPlan，在这个解析过程中对hiveql语句使用getAst()获取AST树，然后再进行解析； 使用analyzer结合数据hive源数据Metastore（新的catalog）进行绑定，生成resolved LogicalPlan； 使用optimizer对resolved LogicalPlan进行优化，生成optimized LogicalPlan，优化前使用了ExtractPythonUdfs(catalog.PreInsertionCasts(catalog

This question already has an answer here: Can a c++ class include itself as an member? 4 answers I read about structure in c++ that it can not contain instance of itself. Can anybody help me to understand why it can not contain instance of itself? Because to create the instance of it, you will need to create the variable, which is itself an instance of it - which will invoke the constructor. This will result in infinite recursive call to the constructor. Assume class A has an instance variable named a : Invoking the constructor of A will cause the initialization of a , which is itself an A .

My structure definition is, typedef struct { int taxid; int geneid; char goid[20]; char evidence[4]; char qualifier[20]; char goterm[50]; char pubmed; char category[20]; } gene2go; I have tab-seperated text file called `"gene2go.txt". Each line of this file contains taxID , geneID , goID , evidence , qualifier , goterm , pubmed and category information. Each line of the file will be kept in a structure. When the program is run, it will first read the content of the input file into an array of type gene2go, I used a function called readInfo . The program will also take the following input