[lmi-commits] [lmi] master d421eff 3/4: Remove a pointless test

[Greg Chicares]

branch: master
commit d421effd770f670a262ae0ebc015c1d9228b11cc
Author: Gregory W. Chicares <address@hidden>
Commit: Gregory W. Chicares <address@hidden>

    Remove a pointless test
    
    Calling clear() on a std::stringstream without calling str() to empty it
    would be dangerous, so there's no point in demonstrating that speed can
    be gained in return.
---
 stream_cast_test.cpp | 21 ---------------------
 1 file changed, 21 deletions(-)

diff --git a/stream_cast_test.cpp b/stream_cast_test.cpp
index ac75576..21473db 100644
--- a/stream_cast_test.cpp
+++ b/stream_cast_test.cpp
@@ -95,25 +95,6 @@ To cast_3(From from, To = To())
     return result;
 }
 
-/// Like cast_3<>(), but without calling str().
-
-template<typename To, typename From>
-To cast_4(From from, To = To())
-{
-    static std::stringstream interpreter {imbued()};
-    interpreter.clear();
-    To result = To();
-    if
-        (  !(interpreter << from)
-        || !(interpreter >> result)
-        || !(interpreter >> std::ws).eof()
-        )
-        {
-        throw std::runtime_error("Oops!");
-        }
-    return result;
-}
-
 void assay_speed()
 {
     static double const e {2.718281828459045};
@@ -121,14 +102,12 @@ void assay_speed()
     auto f1 = [] {for(int n = 0; n < 1000; ++n) cast_1     <std::string>(e);};
     auto f2 = [] {for(int n = 0; n < 1000; ++n) cast_2     <std::string>(e);};
     auto f3 = [] {for(int n = 0; n < 1000; ++n) cast_3     <std::string>(e);};
-    auto f4 = [] {for(int n = 0; n < 1000; ++n) cast_4     <std::string>(e);};
     std::cout
         << "\n  Speed tests..."
         << "\n  stream_cast     : " << TimeAnAliquot(f0)
         << "\n  minimalistic    : " << TimeAnAliquot(f1)
         << "\n  static stream   : " << TimeAnAliquot(f2)
         << "\n  static facet too: " << TimeAnAliquot(f3)
-        << "\n  without str()   : " << TimeAnAliquot(f4)
         << std::endl
         ;
 }