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#### Overview <a id="range.drop.while.overview">[[range.drop.while.overview]]</a>
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Given a unary predicate `pred` and a `view` `r`, `drop_while_view`
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produces a `view` of the range \[`ranges::find_if_not(r, pred)`,
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`ranges::end(r)`).
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The name `views::drop_while` denotes a range adaptor object
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[[range.adaptor.object]]. Given subexpressions `E` and `F`, the
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expression `views::drop_while(E, F)` is expression-equivalent to
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`drop_while_view{E, F}`.
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[*Example 1*:
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``` cpp
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constexpr auto source = " \t \t \t hello there";
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auto is_invisible = [](const auto x) { return x == ' ' || x == '\t'; };
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auto skip_ws = drop_while_view{source, is_invisible};
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for (auto c : skip_ws) {
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cout << c; // prints hello there with no leading space
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}
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```
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— *end example*]
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