c++ - Elegant way for "if(T t = ...) { } else return t;"? -

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is there better way "idiom"?

if(state s = loadsomething()) { } else return s;

in other words, want something, may return error (with message) or success state, , if there error want return it. can become repetitive, want shorten it. example

if(state s = loadfoobar(&loadpointer, &results)) { } else return s; if(state s = loadbaz(&loadpointer, &results)) { } else return s; if(state s = loadbuz(&loadpointer, &results)) { } else return s;

this must not use exceptions favor otherwise (unsuitable build). write little class booleannegator<state> stores value, , negates boolean evaluation. want avoid doing ad-hoc, , prefer boost/standard solution.

you do: 

for (state s = loadsomething(); !s; ) return s;

but not sure if more elegant, , less readable...


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