Le 16 janv. 07 à 19:37, David Chisnall a écrit :
On 16 Jan 2007, at 00:53, Quentin Mathé wrote:
ok. At some point, I will surely move it into EtoileFoundation.
Shiny. Nicolas and I were talking the other day about having a
macros.h file somewhere that could be used for all Étoilé
applications. He had some for quickly creating dictionaries and I
had some for iterating over collections (a FOREACH macro
semantically equivalent to the new for statement in Objective-C 2).
I have been thinking about having such foreach macro recently but
haven't done anything yet.
My reasons in favor of foreach would be:
- it is badly easy to forget setting or resetting initially to nil
the variable used to store the current iterator value
- it is boring to copy/paste this boilerplate code over and over
- it is painfull to refactor a method that contains more than one
iteration
This following blog entry <http://mjtsai.com/blog/2006/07/15/cocoa-
foreach-macro/> discuss some interesting improvements like imp
caching and optional type checking.
For dictionnaries or arrays, I was considering using JSON or a simple
plist string to set up a new collection.
Something like [NSDictionary dictionaryWithString: @"{ key =
value; ... }"] and a shorcut could be [NSDictionary dict: @"{ key =
value; ... }"]
But in the end a macro is probably better since it defers less checks
to runtime. It's surely even shorter too.
My initial idea might be still interesting with something like
[NSPropertyListSerialization propertyListWithString: "a complex plist
string"] that would return an object tree made of array and/or
dictionary. Renaming [NSPropertyListSerialization
propertyListWithString: "a complex plist string"] to [ETCollection
collectionWithPListString:] may feel more intuitive. ETCollection
would be some kind of generic collection abstraction.
Otherwise I think it could be quite nice to duplicate some NSString
methods but with shorter names. For example [NSString concat: @"bla"]
would be identical to [NSString stringByAppendingString: @"bla"]
Quentin.
--
Quentin Mathé
[EMAIL PROTECTED]
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