The index operators:
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const_reference operator[](size_type pos) const; reference operator[](size_type pos); |
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The behavior of this non-compliant example is undefined because the index i used to reference bs may be outside the range of bs, causing a write-out-of-bounds error.
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| Wiki Markup |
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This compliant solution uses the {{basic_string at()}} method, which behaves in a similar fashion to the index {{operator\[\]}} but throws an {{out_of_range}} exception if {{pos >= size()}}. |
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