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Mark Values::at return type as const #608

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merged 3 commits into from
Nov 30, 2020
Merged

Mark Values::at return type as const #608

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32070b0
Make Values::at return as const
varunagrawal Nov 19, 2020
5749565
FIx indentation for Values-inl.h
varunagrawal Nov 19, 2020
f8eece4
Revert "FIx indentation for Values-inl.h"
varunagrawal Nov 30, 2020
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15 changes: 7 additions & 8 deletions gtsam/nonlinear/Values-inl.h
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Original file line number Diff line number Diff line change
Expand Up @@ -338,19 +338,18 @@ namespace gtsam {
} // internal

/* ************************************************************************* */
template<typename ValueType>
ValueType Values::at(Key j) const {
template <typename ValueType>
const ValueType Values::at(Key j) const {
// Find the item
KeyValueMap::const_iterator item = values_.find(j);

// Throw exception if it does not exist
if(item == values_.end())
throw ValuesKeyDoesNotExist("at", j);
if (item == values_.end()) throw ValuesKeyDoesNotExist("at", j);

// Check the type and throw exception if incorrect
// h() split in two lines to avoid internal compiler error (MSVC2017)
auto h = internal::handle<ValueType>();
return h(j,item->second);
// Check the type and throw exception if incorrect
// h() split in two lines to avoid internal compiler error (MSVC2017)
auto h = internal::handle<ValueType>();
return h(j, item->second);
}

/* ************************************************************************* */
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4 changes: 2 additions & 2 deletions gtsam/nonlinear/Values.h
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Expand Up @@ -187,8 +187,8 @@ namespace gtsam {
* Dynamic matrices/vectors can be retrieved as fixed-size, but not vice-versa.
* @return The stored value
*/
template<typename ValueType>
ValueType at(Key j) const;
template <typename ValueType>
const ValueType at(Key j) const;

/// version for double
double atDouble(size_t key) const { return at<double>(key);}
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