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Better error message

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Also show types when nix cannot compare values of different types.
This is also more consistent since types are already shown when comparing values of the same not comparable type.
This commit is contained in:
Fabian Schmitthenner 2015-11-28 01:24:10 +00:00 committed by Eelco Dolstra
parent 0eb200e569
commit 39d1da7b51
1 changed files with 1 additions and 1 deletions
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2
src/libexpr/primops.cc
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@ -248,7 +248,7 @@ struct CompareValues
bool operator () (const Value * v1, const Value * v2) const bool operator () (const Value * v1, const Value * v2) const
{ {
if (v1->type != v2->type) if (v1->type != v2->type)
throw EvalError("cannot compare values of different types"); throw EvalError(format("cannot compare %1% with %2%") % showType(*v1) % showType(*v2));
switch (v1->type) { switch (v1->type) {
case tInt: case tInt:
return v1->integer < v2->integer; return v1->integer < v2->integer;