import std.math;
+ import std.typecons;
  /*
- 
-     Given a string text, replace all spaces in it with underscores, 
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+ Given a string text, replace all spaces in it with underscores, 
-     and if a string has more than 2 consecutive spaces, 
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+ and if a string has more than 2 consecutive spaces, 
-     then replace all consecutive spaces with - 
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+ then replace all consecutive spaces with - 
-     
-     >>> fix_spaces(" Example")
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+ >>> fix_spaces(" Example")
-     "Example"
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+ "Example"
-     >>> fix_spaces(" Example 1")
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+ >>> fix_spaces(" Example 1")
-     "Example_1"
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+ "Example_1"
-     >>> fix_spaces(" Example 2")
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+ >>> fix_spaces(" Example 2")
-     "_Example_2"
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+ "_Example_2"
-     >>> fix_spaces(" Example 3")
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+ >>> fix_spaces(" Example 3")
-     "_Example-3"
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+ "_Example-3"
-     
  */
  string fix_spaces(string text)