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In objective C should i group 10 different protocols in a single header file or every protocol should be placed in it's class header file
There's no right or wrong answer to this. My personal preference is generally one protocol per header. However, if there are two or more protocols that go logically go together and will usually be imported together, you might put them in the same header file. If your protocols form an API for a framework, that is another reason to put them together so classes that use the framework API can just do one import. But I would recommend not using a generic name like protocol.h, try to think up something more descriptive of what the protocols are actually for e.g. all the protocols and class interfaces for Cocoa are logically imported (nested imports are used) in one header called Cocoa.h. On the second part, I find it generally better to keep protocols and class interfaces in separate heade

Categories : IOS

How Can I Save my Header File in the standard gallery of header files (or whatever it's called)?
Create a library, add the directory of the library and the header file to "path". the header file do not have to have a ".h" extension. This is the vecotr file for stl: #ifndef __SGI_STL_VECTOR #define __SGI_STL_VECTOR #include <stl_range_errors.h> #include <stl_algobase.h> #include <stl_alloc.h> #include <stl_construct.h> #include <stl_uninitialized.h> #include <stl_vector.h> #include <stl_bvector.h> #endif /* __SGI_STL_VECTOR */ you can just create a header file named as "prime" and #include <primes>

Categories : C++

Unix:merge multiple CSV files with same header by keeping the header of the first file
awk 'FNR==1 && NR!=1{next;}{print}' *.csv tested on solaris unix: > cat file1.csv Id,city,name ,location 1,NA,JACK,CA > > cat file2.csv ID,city,name,location 2,NY,JERRY,NY > > nawk 'FNR==1 && NR!=1{next;}{print}' *.csv Id,city,name ,location 1,NA,JACK,CA 2,NY,JERRY,NY >

Categories : Unix

How to use a function from a header file without including the header in C?
But this would fail for most of the cases where the header has been pre-compiled into object files This sentence makes no sense. A header can be used to compile an object file, but they never get compiled into object files; they are always used externally.

Categories : C

Include template implementation cpp file in header file and link confusion
It is normal that you do not get any error. Because your definition and implementation are regarded as one file. Better and usual C++ style is; Header file (myClass.h): You should not include the implementation file (compiler will find it if there is any for you). Implementation (myClass.cpp): #include myClass.h Main program (main.cpp) This will also need #include myClass.h If you implement using this usual style you are expected to get a linkage error only because you shouldn't have separated the definition and implementation of template functions/classes. Author might be referring to this.

Categories : C++

Spring Batch - Validate Header Lines in input csv file and skip the file if it invalidates
Looking code of FlatFileItemReader file stop condition is managed; with private field boolean noInput with private function readLine() used in protected doRead() IMHO the best solution is to throw a runtime exception from your skippedLineCallback and manage error as reader exhaustion condition. Foe example writing your delegate in this way class SkippableItemReader<T> implements ItemStreamReader<T> { private ItemStreamReader<T> flatFileItemReader; private boolean headerError = false; void open(ExecutionContext executionContext) throws ItemStreamException { try { flatFileItemReader.open(executionContext); } catch(MyCustomExceptionHeaderErrorException e) { headerError = true; } } public T read() { if(headerError) return nu

Categories : Spring

How to link main function with header file and create it's dll file?
I'll say more about the DLL further down, but for a start, here is the layout of the source files you'll need to do that. You'll need three files: main.c kmp.h kmp.c. Code structure: File main.c #include <stdio.h> #include "kmp.h" // this will make the kmp() function known to main() int main(int argc, const char *argv[]) { char target[200]; ... same code as you aready have } File kmp.h // prototype to make kmp() function known to external programs (via #include) extern int kmp(char *target, int tsize, char *pattern, int psize); File kmp.c #include <stdio.h> #include <stdlib.h> #include <string.h> // declare kmp prototype as DLL-export _declspec(dllexport) int kmp(char *target, int tsize, char *pattern, int psize); // prototype for inte

Categories : C

PHP, is it acceptable to include a php file not at top of the file to get around the limitations of the header() function?
You can include files wherever you want. The problem is OUTPUT. If you're going to be doing header() calls, you cannot have performed ANY output prior to the call. If your includes are simply spitting out output, and are not just defining functions/vars for later use, then you'll have to have to modify the includes to NOT do that output, or at least buffer/defer the output until later. e.g. <?php include('some_file_that_causes_output_when_loaded.php'); header('This header will not work'); will fail no matter what, because your include did output, and kills the header call. But if you mod the include, so you have something more like: <?php include('file_that_just_defines_functions.php'); header('This header will work'); function_from_include_that_causes_output(); will work jus

Categories : PHP

If no functions included in a header file are used, does the compiler still compile this file?
Use of pre-processor directive #include for a header file with no parseable code will not increase the size of the compiled binary. Typically a header file will only usually include declarations - not definitions. So the inclusion of a C header file will not normally increase the size of the binary anyway. For example - in a header file this statement int maxlines; would create the definition of a variable which would be stored in the compiled binary file. The inclusion of the definition would increase the size of the binary. Function declarations and pre-processor tokens such as int parseFiles(const char *file); and #include MAX_LINES 80 however will not increase the program size. One effect of keeping the #include statement will be to increase the time taken to compile slightly.

Categories : C

Shell script: copying columns by header in a csv file to another csv file
Just figure out the name associated with each column and use that mapping to manipulate the columns. If you're trying to do this in awk, you can use associative arrays to store the column names and the rows those correspond to. If you're using ksh93 or bash, you can use associative arrays to store the column names and the rows those correspond to. If you're using perl or python or ruby or ... you can... Or push the columns into an array to map the numbers to column numbers. Either way, then you have a list of column headers, which can further be manipulated however you need to.

Categories : Shell

Vim c++ generate source file based on header file
Use the xptemplate plugin. Examples: http://www.derekwyatt.org/wp-content/uploads/2009/08/my.cpp.xpt.vim http://www.derekwyatt.org/vim/working-with-vim-and-cpp/cpp-snippets

Categories : C++

Where to find the header file and lib file corresponding to Microsoft DLL (say WTTLog.DLL)?
You're wrong on quite a few points. You're assuming that every DLL has a header file. In reality, there may be 0, 1 or more than 1. You're assuming that 64 bits DLL's have different headers. This is obviously untrue, just think of <windows.h>. You're assuming that DLL versions are in exact sync with headers. Again, think of <windows.h>. You're assuming that function names in a DLL are mangled, in particular re. 32/64 bits. Just think of LoadLibrary(L"MessageBoxW") - that is the mangled name, and "W" only means Unicode. Not 64 bits. You're assuming that every DLL has a .lib file. Equally untrue. Why would a COM component DLL need one?

Categories : C++

g++: Is there a way to warn if header file is not included in file?
Not exactly answering the question, but using forward declarations and keeping includes in headers minimal might help in avoiding such problems. If you only use forward declarations in your hpp files, they would be independent from each other, and you will be forced to include specific .hpp files into each .cpp unit being compiled.

Categories : C++

Divide header from a file and convert that to columns with sequence number including file number in Unix
Although your question is a little lacking in details, I think this might at least approach what you are wanting: filename=allresponses_11.txt filenum=$(echo ${filename} | tr -dc 0-9) echo "seq_num file_num hname" for h in $(head -1 ${filename}) do echo "${filenum} ${h}" done | cat -n

Categories : Unix

Including a C++ header file in a c# file
Unfortunately no, that isn't possible as the C# compiler doesn't understand what to do with .h files. Even it if did, it still illegal to have un-scoped variables declarations (constant or otherwise) in .NET. You'll have to convert the file either by hand, or as mentioned in the comment by Joachim Pileborg, build a utility to auto-convert it to C# code for you.

Categories : C#

Should I Add Something To The Header File?
I don't know about that error, but Your second reference to indexPath on this line can't be right: NSString *selectedPhotos = [tagImages[indexPath.section] objectAtIndex:indexPath]; The objectAtIndex parameter needs an integer. You probably meant: NSString *selectedPhotos = [tagImages[indexPath.section] objectAtIndex:indexPath.item]; or, to be more consistent (either use objectAtIndex or use the [] syntax, but using both is a little curious): NSString *selectedPhotos = tagImages[indexPath.section][indexPath.item]; You haven't shown the declaration of tagImages, nor it's initialization, but I assume it is tagImages an array of an array of strings? If so, the above correction should fix it. If not, you should tell us how tabImages is populated/structured. If selectedPhotos is a NS

Categories : Objective C

php: not getting file what does header() do?
You can use the PHP's readfile (http://php.net/manual/en/function.readfile.php) to force a file download, if that's what you are trying to do. There is an example on that page shows you how to download an image. The PHP header function sends a raw HTTP header to the client. The location header is usually used to redirect the client to a new page in PHP.

Categories : PHP

Remove Header From File
What you're looking for is what I call a "lop" operation, which is kind of like a truncate, but at the front of the file. I posted a question about it some time back. Unfortunately, there is no such thing available.

Categories : C++

Making a header.php file
You definitely can! On your main page (Lets say index.php), on the top you can put in <html> <?php include 'header.php'; ?> </html> (Or whatever your header file is called.). Put that HTML in header.php you want to include.

Categories : PHP

some problems with c and c++ header file
Create a seperate header --> S.h, include function()'s of both A.c and B.c in it.. and include it wherever you want to.. or For a list of C standard C headers (stdio, stdlib, assert, ...), prepend a c and remove the .h. For example stdio.h becomes cstdio. For other headers, use extern "C" { #include "other_header.h" }

Categories : C++

Identify file header using php
If you set the format parameter to 1, it'll make an associative array of the headers: $headers = get_headers($url, 1); $content_type = $headers['Content-Type']; See the documentation of get_headers for more information.

Categories : PHP

How to remap a c header file
Alter the include path to use a directory controlled by you before it uses the directory holding "foo.h" In the directory controlled by you make a symlink called "foo.h" which points to "my_foo.h" as the target

Categories : C

Matlab: C++ header file for dll
The only function that you can call is GetTPIErrorDescription_VB. All the others use C++ classes that you cannot access. So I suggest that you do the following: Remove all the other functions from the header file. Remove the #include and the using lines. Remove the #ifdef and replace TRACKERERRORSDLL_VB with __stdcall. Either include windows.h or add some #define statements for the Win32 types. Possibly deal with the bool type depending on whether or not MATLAB knows how to deal with it. If MATLAB won't recognise it, replace bool with int. At that point the call to loadlibrary should work and then you just need to write the code that calls calllib. The resulting header file might look like something this: #define LPSTR char* __declspec(dllimport) bool __stdcall GetTPIErrorDescriptio

Categories : C++

Interpretation of header file
In the C preprocessor, ## is the token concatenation operator. So lcname##_ can be read as "create a new token by putting _ at the end of lcname". I presume that the quoted preprocessor code is defining a preprocessor macro LAPACK_GLOBAL which is intended to be used as follows: #define LAPACK_something LAPACK_GLOBAL(something, SOMETHING) after which any use of LAPACK_something will be substituted by one of the following: something something_ SOMETHING depending on the environment.

Categories : C++

c++ Header file and include
Simple Rule: Include the header file only in those files which need it. If your source or header file does not use any constructs defined/declared in the header file then there is no need to include that header. Doing so only brings unnecessary code in to those translation units thereby corrupting the namespace and possibly increasing the compilation time.

Categories : C++

C++ Header File Interaction
In the header file,you can declare all class fields and functions,that you will implement in the cpp file. You should'nt declare the variables that you will use inside your class functions(because there are like temp variables),But you can declare(and should) const varables,that you will use in your progamm. You should'nt use extern,extern its for variables that you dont define them,and the compiler doesnt bother you about that,because when its extern,that means that the variable is defined somewhere else in your progamm. extern is also used for functions that you want to treat your c++ code,as it were in C. like: extern "C" { //code. } or extern "C" int func(int a); In conclusion- delcare const variables in .h file,and the classes.else - in cpp(unless its inline). in your case: c

Categories : C++

Why could a header file be including itself?
Yes, if you are trying to win the International Obfuscated C Code Contest. Here's a nice example (the source file is called isaak.c): main(){} #define P define #P U ifdef #P main Si #U y #undef y #include "isaak.c" Pb #else char*K="4499999;8 9+jW*':'TZhD m:*h.4-j'9(z7Q>r*:G#FS]mATIdMZY^HaKFZZ JyJw:X49@eJj1,Z'\c^jGU@IXTF@9P2i:gAZx0pD*W3\<ZZs1:.~Z8U:P<\:ZOI0GBPZ7",*H ,S[5202],*B="oA9BA6iN`]`Ph>5F4::M6A69@6I{g[Za__]NPV``aV177E4C5CG;4C<BEJG; ?LGlSZ[Y_!oYi@uXPzLFyPOYP][]`RTaQo86564CAHCG4ES",*F,N;int Bk,V;Y #endif #P C K/16-2 (){char*H;F O=-263;for(H="$+---+|||";*++H;)*(F O=(*H+5&129)+1)= *H;F #P W sprintf( O= -132;}I/**/r(){if((N= *IO/**/O%(21 O -5)+81 O 16)==107)N+= #undef I *K++&15;*F++=N;return*K;} #undef O #P I K #P O + #U N exit(N){F=WH=S,"%5060d")+385;while(Br(),

Categories : C

php download file: header()
Your current code does not output a file, it just sends headers. in order for your script to work add the following code after your fclose statement. $data = file_get_contents($file); echo $data;

Categories : PHP

C header file macro
Macros like these are largely added for compatibility with different C compilers. You'll find this in code from the 1980s and 1990s for compilers that were either K&R compliant (predated ANSI C), or lacked various features. You'd have to read the macro definitions to be absolutely sure, but there are some common patterns with this kind of thing. The macros break into a few types: Linkage conventions By defining ML_EXTERN, the API can support different calling conventions (e.g., stdcall, fastcall, etc.), or different kinds of external linkage (e.g., Microsoft's dllexport). This provides compiler compatibility and cross-platform compatibility while not substantially affecting code readability. Consistent type sizes The number of bits in types like int, short, and long are platfor

Categories : C

What is the right way to add header file?
random is introduced in C++11 so add this to your g++ option: --std=c++0x or --std=gnu++0x The option is probably in your makefile.

Categories : C++

C++ header file output
Your get functions, such as getSymbol, require one argument of type String. void StockMarket::writeStockInfo() { cout << "Stock Information for"<< setw(4) << getSymbol() << ":" << endl; } You are making a call to getSymbol() which has no provided arguments. This is why IBMStock.writeStockInfo() is not displaying any results. However, this ignores another issue. In your get function implementation you are simply returning the argument you are passing in... This doesn't make much sense. What you should do is utilize the 'this' pointer. String StockMarket::getSymbol() { return this->symbol; } I think what you are after is the member variable string called Symbol which belongs to the StockMarket object. Also, a C++ side note. It is best practic

Categories : C++

time.h functions do not see the header file
Enable the declarations by defining feature test macro -D_POSIX_C_SOURCE=200809L at compilation time or before including the header: #define _POSIX_C_SOURCE 200809L #include <time.h> See here for more information on feature test macro _POSIX_C_SOURCE.

Categories : IOS

Renaming Download File Using Header in PHP
My PHP is a bit rusty but I can think of one thing with your code, no content length header. Update your code to this and see if that works: if (isset($_REQUEST['download'])) { { $download_id = $_REQUEST['download']; // ... $filename = $result->TrackPath; $outputfilename = $result->ArtisteName . ' ft. ' . $result->FeaturedArtistes . ' - ' . $result->TrackName . '.mp3'; if (file_exists($filename)) { header("Content-Type: audio/mpeg"); header("Content-Disposition: attachment; filename="" . basename($outputfilename) . "";" ); header("Content-Transfer-Encoding: binary"); header('Content-Length: ' . filesize($filename)); ob_clean(); flush(); readfile($filename); exit; } } } Note that we use flush()

Categories : PHP

Cannot get QString data from another header file
You are likely trying to access mainwindow::log i.e the log that is a member of mainwindow. You probably call rLogin on this function. However you are getting empty values because you are creating a new object which has default values. login *log = new login; This line is part of the problem I assume. We wont know more before you show us how you call rLogin, but you want to check from the same object that you call it on.

Categories : C++

Is it possible to use the class defined in another cpp file rather than any header?
It's not possible [or at least not a good idea] to do this without "moving" the class declaration to a header-file that is used by both the library and your application. Of course, it's technically possible to add the class declaration to your .cpp file (or some header-file), but this is not very reliable, because someone may change the class in the library code, and then you have an incompatible class declaration, which is "undefined behaviour" - meaning your code will often do something OTHER than what you wanted it to do. Of course, the fact that the class is not in a header seems to imply that it's "for internal use only".

Categories : C++

Use a struct in a header file [ C - Linux ]
x.data is a structure and not an array. Use x.data.data_val[0] if that is what you are trying to access. However, you have not allocated any memory for data_val. I believe you are trying to assign a number to data_len and will need to allocate the memory to hold data_len values in data_val.

Categories : C

Vector header file in AVR-Studio
While most people think that C++ is quite overkill for small 8 bits MCU, you can still use C++ with these devices. See this discussion. AFAIK, there is no native support for the standard C++ library in AVR Studio 6, even partial support. However, there are some STL ports available on the internet. I used some time ago this one, with some difficulties for compilation. It provides a quite complete support of basic containers (I used vector and map). Do not expect to have much more. As a side note, I never managed to be completely satisfied with the result: too much memory consumption for not so much gain. I ended in using C on small projects and used bigger 32 bits MCU for my larger projects.

Categories : C++

Rails: Upload CSV file without header
You could just load the CSV file into an array of arrays and remove the first row: data = CSV.read("path/to/file.csv") data = data[1..-1] However this will store the data as an array of values only. When you use headers: true it uses a hash where the keys are the column header names.

Categories : Ruby On Rails

enum declaration in header file
An enum is a type, you should put in in the .h. extern keyword is for variables. Edit: Sorry, I had badly read your code. Here the problem is that you will try to use the enum without having it defined. Think that when a compiler compiles something, it takes every .c file separately, and then "copies" the content of the include into the c file. So here you will have b.c which includes b.h but since the declaration of your type is in a.c, the compiler has no way of knowing it, hence throwing an error when trying to compile b.c. To solve it, just declare your type at the top of b.h and include it in both files, or create a "myenum.h" file which you include in the .h / .c files that require it.

Categories : C

Include new header file in C4droid
From the guide: Note that different compilation systems and programmer communities have different conventions for where to put header files. The book assumes that a header file is in the same directory/folder as the .cpp files and uses "plain" #include "std_lib_facilities.h". If that doesn't work, try #include "../std_lib_facilities.h" (one level up) and #include "../../std_lib_facilities.h" (two levels up).

Categories : Android



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