#744: map on an array delivered by terminal app via scripting bridge gives an
immutable error
----------------------------+-----------------------------------------------
Reporter: jazz...@… | Owner: lsansone...@…
Type: defect | Status: reopened
Priority: major | Milestone: MacRuby 0.7
Component: MacRuby | Resolution:
Keywords: |
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Changes (by jazz...@…):
* status: closed => reopened
* resolution: invalid =>
Comment:
Hi Thibault,
I'm sorry, but I cannot agree! Your Obj-C example is a replacement for
map! and not for map which should return a new Array and is not allowed to
modify the original array!
In the following example map works even with an immutable NSArray
{{{
a = NSArray.arrayWithArray [1,2,3]
p a
p a.map { |e| e + 10 }
p a # a should be unchanged
}}}
and gives correctly
{{{
[1, 2, 3]
[11, 12, 13]
[1, 2, 3]
}}}
If I define my own Array#map my breaking example is working too, see this:
{{{
framework 'ScriptingBridge'
class NSArray # why does Array not work here?
def my_map &block
res = []
self.each { |e| res << block.call(e) }
res
end
end
term = SBApplication.applicationWithBundleIdentifier('com.apple.terminal')
p term.windows
p term.windows.class.ancestors
p [term.windows.first].map { |w| w.name }
p NSArray.arrayWithArray(term.windows).map { |w| w.name }
p term.windows.my_map { |w| w.name }
}}}
And last but not least here is my working Obj-C example (although I don't
like Obj-C very much, but hey, that's my first example with blocks)
{{{
#import <Foundation/Foundation.h>
#import <ScriptingBridge/ScriptingBridge.h>
int main (int argc, const char * argv[]) {
NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
SBApplication *app = [SBApplication
applicationWithBundleIdentifier:@"com.apple.terminal"];
SBElementArray *windows = [app windows];
//NSLog(@"%@", [windows class]);
NSLog(@"%@", windows);
NSMutableArray *result = [NSMutableArray arrayWithCapacity:
[windows count]];
[windows enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL
*stop) {
//NSLog(@"%@", [obj name]);
[result addObject:[obj name]];
}];
NSLog(@"%@", result);
[pool drain];
return 0;
}
}}}
BTW, the original example is still working with my version of MacRuby 0.5!
--
Ticket URL: <http://www.macruby.org/trac/ticket/744#comment:2>
MacRuby <http://macruby.org/>
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