structure

问题 I wish to expand a structure ( bac ) with a number of fields from another structure ( BT ). The names of these fields are contained in the cell array ( adds ) as strings. this is what i have now (and obviously doesn't do the job, explaining this post): for i=1:numel(adds) eval(genvarname('bac.',adds{i})) = eval(strcat('BT.',adds{i})); end I also tried using sprintf , which did not seem to work for me. I feel confident one of you knows how to do it, since I feel it should be rather easy. 回答1:

问题 I wish to expand a structure ( bac ) with a number of fields from another structure ( BT ). The names of these fields are contained in the cell array ( adds ) as strings. this is what i have now (and obviously doesn't do the job, explaining this post): for i=1:numel(adds) eval(genvarname('bac.',adds{i})) = eval(strcat('BT.',adds{i})); end I also tried using sprintf , which did not seem to work for me. I feel confident one of you knows how to do it, since I feel it should be rather easy. 回答1:

问题 I'm writing a module that needs to send an xml string to a 3rd party once an order is placed. The xml is in a particular format that I need to keep it in. I was going to have the xml template stored somewhere so I could read it in and replace the required tags with my data in my observer. My question is, where is the best place to store that xml file? Can I simply create a new folder in my module for "extras" and have it in there? Or is that bad practice? Thanks 回答1: Most XML files for

问题 I have two ways to arrange the fields in a structure struct foo { float a; double b; float c; double d; short e; long f; short g; long h; char i; int j; char k; int l; }; struct foo { double b; double d; long f; long h; float a; float c; int j; int l; short e; short g; char i; char k; }; Which one should be practiced and why? 回答1: The best way to arrange members of a structure is to put them in increasing order, by their size. Doing this, you reduce the padding, required for data alignment.

问题 We have COM Server (as dll, we have only dll file), that implements two COM interfaces. One of interfaces allows us to get messages (as structure) from some device. Depending on message we need to process corresponding structure. Every structure is pointer to a structure VARIANT . This structure is of type byte array (VT_ARRAY | VT_UI1) . All structures contains structure Header and some other information. Structure Header contains field MsgId . Depending on MsgId we need to process other

问题 In Scapy, I want to compare a number of header fields between any two packets a and b . This list of fields is predefined, say: fieldsToCompare = ['tos', 'id', 'len', 'proto'] #IP header Normally I would do it individually: if a[IP].tos == b[IP].tos: ... do stuff... Is there any way to access those packet fields from a list of strings including what each one of them is called? Like: for field in fieldsToCompare: if a[IP].field == b[IP].field: ... do stuff... 回答1: You can use getattr(). These

问题 I have a list of service that each have a number of fields that are structured like this Service1* ServiceID* NetID* Country* price* xxx* xxx* 10 fields in total* Service2* ServiceID* NetID* Country* price* xxx* xxx* 10 fields in total* I have arranged currently where each service is its own document for a total of 1,180. However when a user visits my site and wants to select a service, the server would fetch all 1180. With just 100users firebase would reading 100k docs. I was thinking of

问题 In a project I am working on I am structuring my code as follows MyLib = { AField:0, ASubNamespace:{ AnotherField:"value", AClass:function(param) { this.classField = param; this.classFunction = function(){ // stuff } } }, AnotherClass:function(param) { this.classField = param; this.classFunction = function(){ // stuff } } } and so on like that to do stuff like: var anInstance = new MyLib.ASubNamespace.AClass("A parameter."); Is this the right way to go about achieving namespacing? Are there

问题 I am running a program with 3 structures and what I am doing to read/write in the binary file is the following: struct Medico { int Id_Doctor; int Estado; char Nombre[60]; char Clave_Acceso[20]; char Especialidad[40]; struct Medico *next; }; typedef struct Medico *Medicazos; typedef struct Medico Meds; Medicazos Nuevo; FILE *Archivaldo; char especialida[40], password[20]; char nombre_doc[60]; int estado_doc, id_doc; Archivaldo=fopen("md.dat", "rb"); fclose(Archivaldo); if((Archivaldo=fopen(

问题 I am running a program with 3 structures and what I am doing to read/write in the binary file is the following: struct Medico { int Id_Doctor; int Estado; char Nombre[60]; char Clave_Acceso[20]; char Especialidad[40]; struct Medico *next; }; typedef struct Medico *Medicazos; typedef struct Medico Meds; Medicazos Nuevo; FILE *Archivaldo; char especialida[40], password[20]; char nombre_doc[60]; int estado_doc, id_doc; Archivaldo=fopen("md.dat", "rb"); fclose(Archivaldo); if((Archivaldo=fopen(