*
*>* > It's different because evaluated only once, either at method compilation
*>* or at first execution (lazy initialization).
*
{ localVar1. instVar1. 'asd'->123 }
is great.. and would suffice for many use cases, it does evaluate at method
execution. But bound execution at later point that BlockClosure gives is
interesting.
>>
What you seek is something like
- Dolphin ##( ) construction
- or VW [] once trick from Travis Grigg based on using the #become: power
(search once upon a time or something like that on his blog)
I was thinking of this very subject recently and have a draft proposition
not really ready (must think of it twice).
>>
Other stuff I will eagerly wait for..
Well, I am not aware of Dolphin syntax as much, but in VA it is for evaluate
once at method compilation.
VW I have not known any ecquivalent... so Travis's is news ...
To the current point: {...} is good.. and usable.. but this also gives a
possibility to clean up:
BlockClosure>>asArray
| stmts anArray |
stmts := self decompile statements.
anArray := Array new: stmts size.
stmts doWithIndex: [ :eaNode :indx|
anArray at: indx put: (Compiler evaluate: eaNode ).
].
^anArray
or something more cleaner.. would allow late bound executions... and hold
for all other use cases..
-Skrish
On Thu, Jul 22, 2010 at 5:39 PM, Sudhakar Krishnamachari <
[email protected]> wrote:
> Would this be of interest in general... I have always wanted a more capable
> literal array than what we have now..
>
> #( 123 23 'das' )
> whynot:
> #( 'ac'->23 2->'casd' myVar1) ... evaluates to a collection..
>
> so I just tried this out with a BlockClosure:
>
> asArray
>
> | stmts anArray |
>
> stmts := self decompile statements.
> anArray := Array new: stmts size.
> stmts doWithIndex: [ :eaNode :indx| | start end value|
> start := (eaNode asString indexOf: ${)+1.
> end := (eaNode asString lastIndexOf: $})-1.
> value := Compiler evaluate: (eaNode asString copyFrom: start to:
> end) for: self receiver logged: false.
> anArray at: indx put: value].
> ^anArray
>
> So we could do:
> ['abc'->123. 'def'->456. 'efg'->789. 'hij'->123. 'klm'->456.] asArray.
> [self checkThisUsingKeywordMethod: 'abc' with:'efg'. localVar1.
> instanceVar1 ] asArray
>
>
> to yield arrays.. not neat, I would much rather prefer the literals do
> their job their way...
> but works.. for the narrow set I have tried so far..
>
> Any comments..
> -Skrish
>
>
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