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Issue 4959 - std.conv.parse error "no digits seen" on string starting with zero
Summary: std.conv.parse error "no digits seen" on string starting with zero
Status: RESOLVED FIXED
Alias: None
Product: D
Classification: Unclassified
Component: phobos (show other issues)
Version: D2
Hardware: Other All
: P2 normal
Assignee: No Owner
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Reported: 2010-09-30 06:24 UTC by Lars T. Kyllingstad
Modified: 2010-09-30 06:44 UTC (History)
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Description Lars T. Kyllingstad 2010-09-30 06:24:18 UTC 
Test case:

  auto s = "0 ";
  auto f = parse!double(s);  // std.conv.ConvError: no digits seen

The problem is that when the string starts with '0', parse() skips that char to check if the next one is 'x' (to determine whether it's a hex number).  When it is not a hex number, like in the example above, the zero is simply discarded.
Comment 1 Lars T. Kyllingstad 2010-09-30 06:44:00 UTC 
http://www.dsource.org/projects/phobos/changeset/2074