http://d.puremagic.com/issues/show_bug.cgi?id=8729
[email protected] changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |[email protected] --- Comment #1 from [email protected] 2012-09-26 13:48:08 PDT --- (In reply to comment #0) > This code > > import std.conv; > import std.stdio; > > void main() > { > auto str = "123 456.7 false"; > > auto i = parse!int(str); > auto d = parse!double(str); > auto b = parse!bool(str); > > assert(i == 123); > assert(d == 456.7); > assert(b == false); > } > > results in this exception when you run it > > std.conv.ConvException@std/conv.d(2654): Can't parse string: bool should be > case-insensive 'true' or 'false' > ---------------- > ./q(bool std.conv.parse!(bool, immutable(char)[]).parse(ref > immutable(char)[])+0x183) [0x43867b] > ./q(_Dmain+0x42) [0x430ec2] > ./q(extern (C) int rt.dmain2.main(int, char**).void runMain()+0x1c) [0x43b240] > ./q(extern (C) int rt.dmain2.main(int, char**).void tryExec(scope void > delegate())+0x2a) [0x43abba] > ./q(extern (C) int rt.dmain2.main(int, char**).void runAll()+0x3b) [0x43b287] > ./q(extern (C) int rt.dmain2.main(int, char**).void tryExec(scope void > delegate())+0x2a) [0x43abba] > ./q(main+0xd1) [0x43ab45] > /usr/lib/libc.so.6(__libc_start_main+0xf5) [0x7fd238fc1725] > ---------------- > > If you change it to > > import std.conv; > import std.stdio; > > void main() > { > auto str = "false 123 456.7"; > > auto b = parse!bool(str); > auto i = parse!int(str); > auto d = parse!double(str); > > assert(i == 123); > assert(d == 456.7); > assert(b == false); > } > > you get > > std.conv.ConvException@std/conv.d(1771): Unexpected ' ' when converting from > type string to type int > ---------------- > ./q(int std.conv.parse!(int, immutable(char)[]).parse(ref > immutable(char)[])+0x1b8) [0x431984] > ./q(_Dmain+0x33) [0x430eb3] > ./q(extern (C) int rt.dmain2.main(int, char**).void runMain()+0x1c) [0x43b240] > ./q(extern (C) int rt.dmain2.main(int, char**).void tryExec(scope void > delegate())+0x2a) [0x43abba] > ./q(extern (C) int rt.dmain2.main(int, char**).void runAll()+0x3b) [0x43b287] > ./q(extern (C) int rt.dmain2.main(int, char**).void tryExec(scope void > delegate())+0x2a) [0x43abba] > ./q(main+0xd1) [0x43ab45] > /usr/lib/libc.so.6(__libc_start_main+0xf5) [0x7f1286cc0725] > ---------------- > > Just parsing out bool when it's first and then parsing _nothing_ else works, > but it seems like parsing it under any other circumstances fails (from what I > can tell anyway). Sounds like the implementation is looking for a literal "true" or "false", and is forgetting to skip leading ws. This works: import std.conv; import std.stdio; void main() { auto str = "123 456.7 false"; auto i = parse!int(str); auto d = parse!double(str); str = str[1..$]; //manually skip ws. auto b = parse!bool(str); assert(i == 123); assert(d == 456.7); assert(b == false); } I can look into it for next week, unless somebody else solves it by then. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
