How to write this objective-c block in swift syntax?
I recently switched from working with Objective-C to Swift and now I am facing the following objective-c block.
I cannot figure out how to write it in Swift (1.2) syntax.
This is how the block is defined in objective-c:
formatter = ^(CGFloat value){
// do something with value
return "stringrepresentation";
};
Could someone be kind and show me the correct syntax?
ADDITIONAL Info: the "formatter" value needs to be of type ValueFormatter
How to achieve this?
ios objective-c swift objective-c-blocks
edited Jan 3 at 8:01
Martijn Pieters♦
722k14125262335
asked Dec 8 '14 at 21:59
Philipp JahodaPhilipp Jahoda
37.9k17124150
add a comment |
I recently switched from working with Objective-C to Swift and now I am facing the following objective-c block.
I cannot figure out how to write it in Swift (1.2) syntax.
This is how the block is defined in objective-c:
formatter = ^(CGFloat value){
// do something with value
return "stringrepresentation";
};
Could someone be kind and show me the correct syntax?
ADDITIONAL Info: the "formatter" value needs to be of type ValueFormatter
How to achieve this?
ios objective-c swift objective-c-blocks
edited Jan 3 at 8:01
Martijn Pieters♦
722k14125262335
asked Dec 8 '14 at 21:59
Philipp JahodaPhilipp Jahoda
37.9k17124150
add a comment |
I recently switched from working with Objective-C to Swift and now I am facing the following objective-c block.
I cannot figure out how to write it in Swift (1.2) syntax.
This is how the block is defined in objective-c:
formatter = ^(CGFloat value){
// do something with value
return "stringrepresentation";
};
Could someone be kind and show me the correct syntax?
ADDITIONAL Info: the "formatter" value needs to be of type ValueFormatter
How to achieve this?
ios objective-c swift objective-c-blocks
edited Jan 3 at 8:01
Martijn Pieters♦
722k14125262335
asked Dec 8 '14 at 21:59
Philipp JahodaPhilipp Jahoda
37.9k17124150
I recently switched from working with Objective-C to Swift and now I am facing the following objective-c block.
I cannot figure out how to write it in Swift (1.2) syntax.
This is how the block is defined in objective-c:
formatter = ^(CGFloat value){
// do something with value
return "stringrepresentation";
};
Could someone be kind and show me the correct syntax?
ADDITIONAL Info: the "formatter" value needs to be of type ValueFormatter
How to achieve this?
ios objective-c swift objective-c-blocks
ios objective-c swift objective-c-blocks
edited Jan 3 at 8:01
Martijn Pieters♦
722k14125262335
asked Dec 8 '14 at 21:59
Philipp JahodaPhilipp Jahoda
37.9k17124150
edited Jan 3 at 8:01
Martijn Pieters♦
722k14125262335
asked Dec 8 '14 at 21:59
Philipp JahodaPhilipp Jahoda
37.9k17124150
edited Jan 3 at 8:01
Martijn Pieters♦
722k14125262335
edited Jan 3 at 8:01
Martijn Pieters♦
722k14125262335
edited Jan 3 at 8:01
Martijn Pieters♦
722k14125262335
722k14125262335
asked Dec 8 '14 at 21:59
Philipp JahodaPhilipp Jahoda
37.9k17124150
asked Dec 8 '14 at 21:59
Philipp JahodaPhilipp Jahoda
37.9k17124150
asked Dec 8 '14 at 21:59
Philipp JahodaPhilipp Jahoda
37.9k17124150
37.9k17124150
add a comment |
add a comment |
3 Answers
3
active
oldest
votes
Look at closures.
{(/*Parameters*/) -> /*ReturnType*/ in
// Statements
}
So this block would be:
{(value : CGFloat) -> String in
// Do cool stuff
retun "aString"
}
answered Dec 8 '14 at 22:03
Rob SandersRob Sanders
3,33221735
add a comment |
That would look like this:
let formatter = { (value: CGFloat) -> String in
// do something with value
return "the formatted thing"
}
The type of formatter will be (CGFloat) -> String.
answered Dec 8 '14 at 22:04
dpassagedpassage
4,75832150
add a comment |
SWIFT 2
Block Declarations
var myCallBack:((Bool)->Void)? = nil
Block sending back
self.myCallBack!(true)
Block Receiving back
myCallBack = { (isSuccess: Bool)-> () in
//perform action you want to
}
answered Jul 18 '16 at 10:10
Maninderjit SinghManinderjit Singh
9361722
add a comment |
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3 Answers
3
active
oldest
votes
3 Answers
3
active
oldest
votes
active
oldest
votes
active
oldest
votes
Look at closures.
{(/*Parameters*/) -> /*ReturnType*/ in
// Statements
}
So this block would be:
{(value : CGFloat) -> String in
// Do cool stuff
retun "aString"
}
answered Dec 8 '14 at 22:03
Rob SandersRob Sanders
3,33221735
add a comment |
Look at closures.
{(/*Parameters*/) -> /*ReturnType*/ in
// Statements
}
So this block would be:
{(value : CGFloat) -> String in
// Do cool stuff
retun "aString"
}
answered Dec 8 '14 at 22:03
Rob SandersRob Sanders
3,33221735
add a comment |
Look at closures.
{(/*Parameters*/) -> /*ReturnType*/ in
// Statements
}
So this block would be:
{(value : CGFloat) -> String in
// Do cool stuff
retun "aString"
}
answered Dec 8 '14 at 22:03
Rob SandersRob Sanders
3,33221735
Look at closures.
{(/*Parameters*/) -> /*ReturnType*/ in
// Statements
}
So this block would be:
{(value : CGFloat) -> String in
// Do cool stuff
retun "aString"
}
answered Dec 8 '14 at 22:03
Rob SandersRob Sanders
3,33221735
answered Dec 8 '14 at 22:03
Rob SandersRob Sanders
3,33221735
answered Dec 8 '14 at 22:03
Rob SandersRob Sanders
3,33221735
answered Dec 8 '14 at 22:03
Rob SandersRob Sanders
3,33221735
3,33221735
add a comment |
add a comment |
That would look like this:
let formatter = { (value: CGFloat) -> String in
// do something with value
return "the formatted thing"
}
The type of formatter will be (CGFloat) -> String.
answered Dec 8 '14 at 22:04
dpassagedpassage
4,75832150
add a comment |
That would look like this:
let formatter = { (value: CGFloat) -> String in
// do something with value
return "the formatted thing"
}
The type of formatter will be (CGFloat) -> String.
answered Dec 8 '14 at 22:04
dpassagedpassage
4,75832150
add a comment |
That would look like this:
let formatter = { (value: CGFloat) -> String in
// do something with value
return "the formatted thing"
}
The type of formatter will be (CGFloat) -> String.
answered Dec 8 '14 at 22:04
dpassagedpassage
4,75832150
That would look like this:
let formatter = { (value: CGFloat) -> String in
// do something with value
return "the formatted thing"
}
The type of formatter will be (CGFloat) -> String.
answered Dec 8 '14 at 22:04
dpassagedpassage
4,75832150
answered Dec 8 '14 at 22:04
dpassagedpassage
4,75832150
answered Dec 8 '14 at 22:04
dpassagedpassage
4,75832150
answered Dec 8 '14 at 22:04
dpassagedpassage
4,75832150
4,75832150
add a comment |
add a comment |
SWIFT 2
Block Declarations
var myCallBack:((Bool)->Void)? = nil
Block sending back
self.myCallBack!(true)
Block Receiving back
myCallBack = { (isSuccess: Bool)-> () in
//perform action you want to
}
answered Jul 18 '16 at 10:10
Maninderjit SinghManinderjit Singh
9361722
add a comment |
SWIFT 2
Block Declarations
var myCallBack:((Bool)->Void)? = nil
Block sending back
self.myCallBack!(true)
Block Receiving back
myCallBack = { (isSuccess: Bool)-> () in
//perform action you want to
}
answered Jul 18 '16 at 10:10
Maninderjit SinghManinderjit Singh
9361722
add a comment |
SWIFT 2
Block Declarations
var myCallBack:((Bool)->Void)? = nil
Block sending back
self.myCallBack!(true)
Block Receiving back
myCallBack = { (isSuccess: Bool)-> () in
//perform action you want to
}
answered Jul 18 '16 at 10:10
Maninderjit SinghManinderjit Singh
9361722
SWIFT 2
Block Declarations
var myCallBack:((Bool)->Void)? = nil
Block sending back
self.myCallBack!(true)
Block Receiving back
myCallBack = { (isSuccess: Bool)-> () in
//perform action you want to
}
answered Jul 18 '16 at 10:10
Maninderjit SinghManinderjit Singh
9361722
answered Jul 18 '16 at 10:10
Maninderjit SinghManinderjit Singh
9361722
answered Jul 18 '16 at 10:10
Maninderjit SinghManinderjit Singh
9361722
answered Jul 18 '16 at 10:10
Maninderjit SinghManinderjit Singh
9361722
9361722
add a comment |
add a comment |
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