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Add missing block referred to in comment

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Christopher Dusovic 2018-03-25 17:46:45 -07:00
parent 71389bd423
commit 2e7ecbae8a
1 changed files with 4 additions and 1 deletions
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@ -731,7 +731,10 @@ if ([myClass conformsToProtocol:@protocol(CarUtilities)]) {
/////////////////////////////////////// ///////////////////////////////////////
// Blocks are statements of code, just like a function, that are able to be used as data. // Blocks are statements of code, just like a function, that are able to be used as data.
// Below is a simple block with an integer argument that returns the argument plus 4. // Below is a simple block with an integer argument that returns the argument plus 4.
int (^addUp)(int n); // Declare a variable to store the block. ^(int n) {
return n + 4;
}
int (^addUp)(int n); // Declare a variable to store a block.
void (^noParameterBlockVar)(void); // Example variable declaration of block with no arguments. void (^noParameterBlockVar)(void); // Example variable declaration of block with no arguments.
// Blocks have access to variables in the same scope. But the variables are readonly and the // Blocks have access to variables in the same scope. But the variables are readonly and the
// value passed to the block is the value of the variable when the block is created. // value passed to the block is the value of the variable when the block is created.