Apparently they're seen as useful enough that C++11 got them, in its own C++ish way. You're probably already familiar with this new addition to C++, but just in case, C++ lambda functions can capture the state of their enclosing scope. The consensus seems to be that adding this feature to C++ was a big win for the language... something Perl's been doing for decades.
An introductory article on C++11's lambda closures.
One difficulty that C++'s "closures" have is that you can't really share a variable from an enclosing scope across several lambda functions if the variable's outer scope ends. This is because the way C++ implements them, the captured variables are either copies, or references. Copies can't really be shared. References can, but if the target falls out of scope the lambdas are left holding the bitter end of an unfastened rope.
But all is not lost; C++11 got shared reference counted pointers too.
Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
Read Where should I post X? if you're not absolutely sure you're posting in the right place.
Please read these before you post! —
Posts may use any of the Perl Monks Approved HTML tags:
Outside of code tags, you may need to use entities for some characters:
- a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
Link using PerlMonks shortcuts! What shortcuts can I use for linking?
See Writeup Formatting Tips and other pages linked from there for more info.
| & || & |
| < || < |
| > || > |
| [ || [ |
| ] || ] ||