dynamic-arrays

RsProxyList.Open objDBCommand,,1,1 dim recCount:recCount = RsProxyList.RecordCount Dim output(recCount,2) I get an error because recCount is of wrong type. I have tried to convert it to Int but that does not work either. The following works fine: RsProxyList.Open objDBCommand,,1,1 dim recCount:recCount = RsProxyList.RecordCount Dim output(3,2) How do I convert recCount to get this array declaration to work? Lankymart You need to first declare your Array as dynamic then use ReDim to set the first dimension dynamically, like this; Dim output() 'Declare a "Dynamic Array" ReDim output(recCount, 2)

gcc 4.9 now has support for n3696 (Runtime-sized arrays with automatic storage duration) . n3662 says: In N3497 Runtime-sized arrays with automatic storage duration, Jens Maurer proposes arrays with runtime bound. These arrays are to std::dynarray as normal fixed-size arrays are to std::array. In this mailing list , Jonathan Wakely says: We should add a C++14 status table to the manual but in the meantime here's a quick summary of the library status. ... These ones are missing: N3672 A proposal to add a utility class to represent optional objects N3655 TransformationTraits Redux N3662 C++

I have the following structures in Delphi 2009: type IndiReportIndi = record IndiName: string; NameNum: integer; ReportIndiName: string; end; var XRefList: array of IndiReportIndi; where XRefList is a dynamic array. I want to save XRefList to a FileStream. How do I do that AND include all the IndiName and ReportIndiName strings so that they will all be retrievable again when I later load from that FileStream? Use: http://code.google.com/p/kblib/ type IndiReportIndi = record IndiName: string; NameNum: integer; ReportIndiName: string; end; TXRefList = array of IndiReportIndi; var XRefList:

Are there any C++ (or C) libs that have NumPy-like arrays with support for slicing, vectorized operations, adding and subtracting contents element-by-element, etc.? nojhan Here are several free software that may suit your needs. The GNU Scientific Library is a GPL software written in C. Thus, it has a C-like allocation and way of programming (pointers, etc.). With the GSLwrap , you can have a C++ way of programming, while still using the GSL. GSL has a BLAS implementation, but you can use ATLAS instead of the default CBLAS, if you want even more performances. The boost/uBLAS library is a BSL

This question already has an answer here: cout << with char* argument prints string, not pointer value 6 answers I'm working on a string class that employs pointers and I'm just having some difficulty in understanding how my print function works here. Specifically, why does cout << pString output the string and not the memory address of the dynamic array that it's pointing to? My understanding was that the variable pString was a pointer. class MyString { public: MyString(const char *inString); void print(); private: char *pString; }; MyString::MyString(const char *inString) { pString = new

In Python : def select(x): y = [] for e in x: if e!=0: y.append(e) return y that works as: x = [1,0,2,0,0,3] select(x) [1,2,3] to be translated into Fortran : function select(x,n) result(y) implicit none integer:: x(n),n,i,j,y(?) j = 0 do i=1,n if (x(i)/=0) then j = j+1 y(j) = x(i) endif enddo end function The questions are in Fortran: how to declare y(?) ? how to declare predefined values for x how to avoid dimension info n for 1 if it is defined as y(n) the output will be: x = (/1,0,2,0,0,3/) print *,select(x,6) 1,2,3,0,0,0 which is not desired! !------------------------------- Comments: 1-

What is the fastest way to add a new item to an existing array? Dim arr As Integer() = {1, 2, 3} Dim newItem As Integer = 4 (I already know that when working with dynamic list of items you should rather use a List , ArrayList or similar IEnumerables . But what to do if you're stuck to legacy code that uses arrays?) What I've tried so far: ' A) converting to List, add item and convert back Dim list As List(Of Integer)(arr) list.Add(newItem) arr = list.ToArray() ' --> duration for adding 100.000 items: 33270 msec ' B) redim array and add item ReDim Preserve arr(arr.Length) arr(arr.Length - 1) =