dmd

问题 I won't go very deep into the issue (the codebase is already thousands of lines and quite complex), so I'll try to miniminise the... "window" to what I've spotted. Here's the routine triggering the "Segmentation Fault" : extern (C) { void* Statements_new() { return cast(void*)(new Statements()); } void Statements_add(Statements s, Statement st) { //writeln("In here"); if (s is null) writeln("StatemenTS are null"); else writeln("not null : "~ typeid(s).name); if (st is null) writeln("statement

问题 I've tried to statically link with sqlite3 without success. I'm using the 'etc.c.sqlite3' header, and the sqlite3 amalgamation. To create the .lib file I've tried both VC++ and MinGW-gcc, both of these compile the source file successfully - but they both generate COFF object format (optlink, which DMD uses, works with OMF). After reading tons of posts on 'digitalmars.D', I've tried several different solutions. objconv: tried to convert lib file created with GCC, resulted in undefined symbols

问题 Here is a simple generator in C#. IEnumerable<int> Foo() { int a = 1, b = 1; while(true) { yield return b; int temp = a + b; a = b; b = temp; } } How do I write a similar generator in Digital Mars D? (The question is about the yield return statement) Thanks! Update. That's interesting. Since I'm just generating a mathematical sequence, using recurrence may be a good option. auto fib = recurrence!("a[n-1] + a[n-2]")(1, 1); foreach (e; take(fib, 10)) // <- prints first ten numbers from the

问题 What are the Pros/Cons of the different D Compilers? How is the performance and the standard compliance/D2 support? How well are debuggers supported? How good are the Error messages and is the IDE integration? How good is the 64 bit support? My thought so far: DMD Mature and well maintained Only one platform, 64 bit support is not good Not FOSS GDC Supports various platforms Has very mature optimizations, so it's fast? Out of date runtime? GCC so a good debugger support? LDC Supports various

问题 Should be rather simple but it's not. Here's my code : string cases() { string ret = ""; string[] methods; methods = [__traits(derivedMembers,mixin("Math"))]; foreach (string s; methods) ret ~= "case \"" ~ s ~ "\": return Math."~s~"(params);"; methods = [__traits(derivedMembers,mixin("OtherClass"))]; foreach (string s; methods) ret ~= "case \"" ~ s ~ "\": return OtherClass."~s~"(params);"; return ret; } string execute(string what, string[] params) { switch (what) { mixin(cases()); default:

问题 The D language compiler DMD outputs its coverage analysis in a file containing the original source as | inout(Ix)[] prefix() inout | { 2037| assert(!keys.empty); 2037| final switch (keys.length) | { 000000000| case 1: 000000000| return keys.at!0[]; 2037| case 2: | import std.algorithm.searching : commonPrefix; 2037| return commonPrefix(keys.at!0[], keys.at!1[]); | } | } that is, the original source where each line has been prefixed by a 10-character column containing the execution count (if

问题 Iv been trying to figure this one out forever, and its starting to annoy me. I understand the D runtime library. What it is, what it does. I also understand that you can compile a D app without it. Like what XoMB does. Well, XoMB defines its own runtime, but there are cases where you dont need to write your own, if you dont need it. I understand that the DigitalMars D compiler (dmd) which is what im using, does alot of things behind the scenes for the runtime, like emiting references to

问题 My code: import gtk.MainWindow; import gtk.Main; void main(string[] args) { Main.init(args); auto win=new MainWindow("Hello World"); win.setDefaultSize(200,100); win.showAll(); Main.run(); } When I try to compile with DMD (or gdc), I get the errors: dmd ./test.d -L-L/usr/local/include/d/gtkd-2/lib test.o:(.data+0x10): undefined reference to `_D3gtk10MainWindow12__ModuleInfoZ' test.o:(.data+0x18): undefined reference to `_D3gtk4Main12__ModuleInfoZ' test.o: In function `_Dmain': ./test.d:(.text

问题 I'm having trouble instantiating a RedBlackTree container with chars, but it works with ints: import std.stdio; import std.container; void main() { auto r1 = redBlackTree!(int)(); // works auto r2 = redBlackTree!(char)(); // error instantiating } I'm using DMD32 D Compiler v2.060. Any thoughts? Thanks. 回答1: you need to use a type that is comparable (i.e. can use the < operator or provide your own comparator as the second template parameter char (and wchar) is only useful for use in arrays due

问题 import std.stdio; void main(){ int n; while(readf("%d", &n)){ if(n == 11) break; writeln(n); } } The first iteration works, and it prints n , but after that readf() never returns. The documentation has only a single line explaining readf() : uint readf(A...)(in char[] for­mat, A args); For­mat­ted read one line from stdin. Am I do something wrong? or is there something wrong with readf() ? I just need to read numbers from the standard input. using: DMD 2.054 64-bit 回答1: I believe it's because