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    <p>This is a good place to apply the remove/erase idiom:</p> <pre><code>accDetails.erase( std::remove_if( accDetails.begin(), accDetails.end(), [username](AccDetails const &amp;a) { return username == a.username; }), accDetails.end()); </code></pre> <p>As a bonus, this is likely to be a little bit faster than what you were doing (or maybe quite a bit faster, if your vector is large). Erasing each item individually ends up as O(N<sup>2</sup>), but this will be O(N), which can be pretty significant when/if N gets large.</p> <p>If you can't use C++11, the lambda won't work, so you'll need to encode that comparison separately:</p> <pre><code>class by_username { std::string u; public: by_username(std::string const &amp;u) : u(u) {} bool operator()(AccDetails const &amp;a) { return u == a.username; } }; accDetails.erase( std::remove_if(accDetails.begin(), accDetails.end(), by_username(username)), accDetails.end()); </code></pre> <p>Alternatively, you can overload <code>operator==</code> for your <code>AccDetails</code> class, and handle the comparison there. For example:</p> <pre><code>#include &lt;vector&gt; #include &lt;iostream&gt; #include &lt;algorithm&gt; #include &lt;string&gt; #include &lt;iterator&gt; class AccDetail { std::string name; int other_stuff; public: AccDetail(std::string const &amp;a, int b) : name(a), other_stuff(b) {} bool operator==(std::string const &amp;b) { return name == b; } friend std::ostream &amp;operator&lt;&lt;(std::ostream &amp;os, AccDetail const &amp;a) { return os &lt;&lt; a.name &lt;&lt; ", " &lt;&lt; a.other_stuff; } }; int main(){ std::vector&lt;AccDetail&gt; ad = { {"Jerry", 1}, { "Joe", 2 }, { "Bill", 3 } }; std::cout &lt;&lt; "Before Erase:\n"; std::copy(ad.begin(), ad.end(), std::ostream_iterator&lt;AccDetail&gt;(std::cout, "\n")); ad.erase( std::remove(ad.begin(), ad.end(), "Joe"), ad.end()); std::cout &lt;&lt; "\nAfter Erasing Joe:\n"; std::copy(ad.begin(), ad.end(), std::ostream_iterator&lt;AccDetail&gt;(std::cout, "\n")); } </code></pre>
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    1. USJerry Coffin
    1. USJerry Coffin
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    1. COI'm getting *expected primary expression* error at this line `[username]...`. So do i need to write a operator() in my struct?
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      1. USJoel Seah
    2. CO@JoelSeah: See edited answer.
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