folly::gen::detail::SplitTo< TargetContainer, Delimiter, Targets > Class Template Reference

#include <String-inl.h>

Public Member Functions
	SplitTo (Delimiter delimiter)
TargetContainer	operator() (StringPiece line) const

Private Attributes
Delimiter	delimiter_

Detailed Description

template<class TargetContainer, class Delimiter, class... Targets>
class folly::gen::detail::SplitTo< TargetContainer, Delimiter, Targets >

ParseToTuple - For splitting a record and immediatlely converting it to a target tuple type. Primary used through the 'eachToTuple' helper, like so:

auto config = split("1:a 2:b", ' ') | eachToTuple<int, string>() | as<vector<tuple<int, string>>>();

Definition at line 377 of file String-inl.h.

Constructor & Destructor Documentation

template<class TargetContainer , class Delimiter , class... Targets>

folly::gen::detail::SplitTo< TargetContainer, Delimiter, Targets >::SplitTo ( Delimiter  delimiter )

inlineexplicit

Definition at line 381 of file String-inl.h.

: delimiter_(delimiter) {}

Member Function Documentation

template<class TargetContainer , class Delimiter , class... Targets>

TargetContainer folly::gen::detail::SplitTo< TargetContainer, Delimiter, Targets >::operator() ( StringPiece  line ) const

inline

Definition at line 383 of file String-inl.h.

References FOLLY_POP_WARNING, i, and folly::gen::split().

                                                     {
    int i = 0;
    StringPiece fields[sizeof...(Targets)];
    // HACK(tjackson): Used for referencing fields[] corresponding to variadic
    // template parameters.
    auto eatField = [&]() -> StringPiece& { return fields[i++]; };
    if (!split(
            delimiter_,
            line,
            detail::passthrough<StringPiece&, Targets>(eatField())...)) {
      throw std::runtime_error("field count mismatch");
    }
    i = 0;
    return TargetContainer(To<Targets>()(eatField())...);
  }

Member Data Documentation

template<class TargetContainer , class Delimiter , class... Targets>

Delimiter folly::gen::detail::SplitTo< TargetContainer, Delimiter, Targets >::delimiter_

private

Definition at line 378 of file String-inl.h.

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The documentation for this class was generated from the following file:

• proxygen/folly/folly/gen/String-inl.h