[Haskell-cafe] Parsec : parse either an interger or a double?
Dear list, Sorry for asking you another parsec question. I have a text file that is the output of a C/C++ program, involving time references in double format. Now, the program seems to truncate the output if possible, so a file that is one second long will produce this file: File type = ooTextFile Object class = TextGrid xmin = 0 xmax = 1 and a file that is 1.1 seconds long will be this: File type = ooTextFile Object class = TextGrid xmin = 0 xmax = 1.1 ... Now, how do I handle this case in parsec? I have tried this: start - try (float haskellDef) | fmap ( / 1.0 ) $ integer haskelldef and similar solutions, but I cant get it to accept the 0. /Fredrik -- Life is like a trumpet - if you don't put anything into it, you don't get anything out of it. ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] Parsec : parse either an interger or a double?
Sorry for answering my own question : end - try (float haskelldef) | (fmap fromInteger $ integer haskelldef ) appears to work nicelly. Sorry about that. /Fredrik On Sun, Jul 7, 2013 at 1:57 PM, Fredrik Karlsson dargo...@gmail.com wrote: Dear list, Sorry for asking you another parsec question. I have a text file that is the output of a C/C++ program, involving time references in double format. Now, the program seems to truncate the output if possible, so a file that is one second long will produce this file: File type = ooTextFile Object class = TextGrid xmin = 0 xmax = 1 and a file that is 1.1 seconds long will be this: File type = ooTextFile Object class = TextGrid xmin = 0 xmax = 1.1 ... Now, how do I handle this case in parsec? I have tried this: start - try (float haskellDef) | fmap ( / 1.0 ) $ integer haskelldef and similar solutions, but I cant get it to accept the 0. /Fredrik -- Life is like a trumpet - if you don't put anything into it, you don't get anything out of it. -- Life is like a trumpet - if you don't put anything into it, you don't get anything out of it. ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] Catch multiple exceptions using 'Control.Exception'
On 13-07-06 12:12 PM, Nikita Karetnikov wrote: Is there an open sum type or a closed existential type? OCaml has open sum types. I haven't really seen closed existential types. (I have seen some approximations, but each lacks one last bit.) ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
[Haskell-cafe] Linux users needed for OpenGL extensions survey
Hi, I'm doing a survey to find out how well various OpenGL extensions are supported, to know where to focus efforts on Haskell game software. If you run Linux on your desktop and want to help, here's how: 1.) Save the information like this: $ glxinfo SOMENAME.glxinfo ... where SOMENAME is your name, or nickname, or the computer's name, whatever you like. If you don't have glxinfo, you might need to install mesa-utils on Ubuntu, or mesa-demos on Arch. 2.) Ensure the file contains information about OpenGL extensions supported by your graphics card. 3.) Attach it to me *off list*. If you have questions, please ask me *off list*. If there's interest, I'll make the survey results available. Thanks! ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
