ios - counter inside enumerateObjectsUsingBlock -

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i need iterate through nsarray calculate metrics (total height). here's code:

__block cgfloat height = someinitialvalue;  [messages enumerateobjectsusingblock:^(id obj, nsuinteger idx, bool *stop) {     if (condition1)         height += somevalue;      if (condition2)         height += somevalue; }];

each iteration starts height = someinitialvalue. want continually increase height. possible calculate total height block-enumeration or have use fast enumeration?

you increasing height in code here. height marked __block identifier means can set within block.

the nsuinteger idx block parameter counter loop (in case need that).

there seems no reason use block enumeration in case.


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