January 2015 - Pharo-dev - lists.pharo.org

Maintainer of FFI-Package
by Nicolai Hess Sept. 12, 2015

Sept. 12, 2015

Who is the maintainer of the FFI-Package for Squeak and/or Pharo ? I especially interested in the FFI-Unix examples and the state on working FFI on linux for current squeak release (AFAIK it does not work with "squeak all in one" 4.5) regards Nicolai

3 6

ensure: and assignments RB Rule
by stepharo Sept. 8, 2015

Sept. 8, 2015

Hi guys I'm revisiting all the RB rule and I'm puzzled by this one. Checks assignment to a variable that is the first statement inside the value block that is also used in the unwind block. [| `@temps | `var := `@object. `@.statements] ensure: [`var `@messages: `@args] Does anybody have an idea? Stef

7 14

NAtiveBoost error
by Alain Rastoul Aug. 1, 2015

Aug. 1, 2015

Hi, I have a problem with a nativeboost call, but I don't see what I do wrong. library function prototype is: int zmq_getsockopt (void *socket, int option_name, void *option_value, size_t *option_len); my calling method in pharo is: zmq_getsockopt: socket option_name: option_name option_value: option_value option_len: option_len <primitive: #primitiveNativeCall module: #NativeBoostPlugin error: errorCode> ^self nbCall: #(int zmq_getsockopt (void *socket, int option_name, void * option_value, size_t* option_len) ) when I call it with ... optionValue := (NBExternalArray ofType: 'int') externalNew: 1. optionLen := (NBExternalArray ofType: 'size_t' ) externalNew: 1. [ optionValue at: 1 put: 0 . optionLen at: 1 put: (NBExternalType sizeOf: 'int') . rc := self zmq_getsockopt: socket option_name: option_name option_value: optionValue option_len: optionLen . value := optionValue at: 1 . ] ensure: [ optionValue free. optionLen free ]. ... I allways get an exception: "error during FFI call : nil" After stepping in NBFFICallout generation, I found something strange, the code generation seems not to be called because lastError stays at nil ? handleFailureIn: aContext nativeCode: aBlock lastError := self getErrorFrom: aContext lastError: NativeBoost lastError. >>getErrorFrom: aContext lastError: errorCode ... checks pragmas etc >>getErrorFrom: aContext lastError: errorCode ... lastError := aContext tempAt: method numTemps. => lastError = nil ??? shouldn't be ErrNoNativeCodeInMethod ? "install native code and retry the send" lastError = ErrNoNativeCodeInMethod ifTrue: [ ^ self generateCode: aBlock andRetry: aContext ]. never gets called ... "ok, we're out of options, signal an error here" ^ self signalError: lastError Could it be because I use this image on windows and unix ? Or because I had an exception at prototype parsing the first time because I forgot a ; at the end of the prototype ? Is my prototype correct or is it the origin of the error ? Is there a way to reset the lastError (aContext tempAt: method numTemps) ? I will try to reset it in debugger but may be there is a cleaner way ? would it be ok to change the test in handleFailure to (lastError = ErrNoNativeCodeInMethod) or:[ lastError isNil ] ? (I can open a bug in this case ) Any idea or comment is welcome Thanks in advance Alain

11 55

New methods for the String class
by Daniela Meneses July 31, 2015

July 31, 2015

Hi to all, As you may know I'm working on in some improvements for the String class. Until now I implemented some missing tests. Right now I'm looking forward to add new methods that could be useful based on Ruby API ( http://www.ruby-doc.org/core-2.1.0/String.html) These are a few of the methods that I'm planning to implement: - chomp(separator=$/) -> new_str - chop() -> new_str - ljust(integer, padstr='') ->new_str - next -> new_str - partition(sep) -> [head, sep, tail] Could you help to find out if these methods are already available for the String class? If you have any idea of new methods for the string class, will be really welcome. -- Cheers , Daniela Meneses

16 34

MongoTalk: new place on smalltalkhub
by FranÃ§ois Stephany July 23, 2015

July 23, 2015

Hi, I've just created a new team for MongoTalk on SmalltalkHub: http://www.smalltalkhub.com/#!/~MongoTalkTeam The old repo (http://www.smalltalkhub.com/#!/~francois/MongoTalk) will stay just in case some scripts rely on it but you should update to the new repo: http://www.smalltalkhub.com/#!/~MongoTalkTeam/mongotalk I've created a version 1.5.1 in the Metacello configuration to reflect the repo migration. Shout at me if I missed something! Cheers, Fa (Many thanks to Norbert for pushing the migration ;)

5 6

RBEnvironments allClasses/Traits/Meta ...
by Nicolai Hess June 27, 2015

June 27, 2015

Hi, some time ago Yuriy cleaned up the RBBrowserEnvironment methods for allClassesAndTraits(Do), classesDo, .... The fix was good and necessary (I think). But they had an impact on some SmallLint-rules (they arent applied on the class side) and the behavior for the different Environments changed (compared with Pharo3 (-> 14621 <https://pharo.fogbugz.com/default.asp?14621> Some RBBrowserEnvironments don't work well with Metaclasses)) As some SmallLint-rules need to iterate over the metaclasses as well and I don't want to revert Yuriys change, I 'll add another method that collect classes and metaclasses. So, I need some help, how to name this methods: all classes (Object, Integer, ....) -> allClasses, ok all classes and metaclasses (Object, Object class, Integer class ) -> ? allBehaviors? all classes and traits -> allClassesAndTraits, ok all classes and meta classes and traits and class traits -> ? no idea! all metaclasses and class traits -> allMeta(ClassesAndTraits) ? I don't know if we need this One problem with "allBehaviors" is, SystemNavigation uses allBehaviors to iterate over classes, metaclasses, traits and class traits, allthough a Trait is not a Behavior. (TClass isBehavior -> false) feedback is welcome nicolai

4 8

untypeable key combination
by Nicolai Hess June 2, 2015

June 2, 2015

We have a class KMUntypeableSingleKeyCombination this is used for key kombinations with tab arrow backspace .... This is useful for printing key kombinations like Ctrl+TAB "space" does not use the KMUntypeableSingleKeyCombination class, therefore a short cut like Character space shift asKeyCombination looks like " Shift + " shouldn't space use this class? And I find the name a little bit misleading, what is a untypeable key? The key is typeable, otherwise we couldn't use it. Renaming the class to KMUnprintableSingleKeyCombination isn't better, because we can print this keycombination. nicolai

7 20

ctrl+a is seen as ctrl+home windows
by Tudor Girba May 31, 2015

May 31, 2015

Hi, I am on Windows, using Pharo 3.0, and I am trying to get the keybindings to work in Rubric using Windows convention (so, Ctrl instead of Cmd as a modifier), It worked reasonably well, but the problem is that somehow Ctrl+a is mapped to Ctrl+Home. The problem is not specific to Rubric as I can detect the same behavior in the regular PluggableTextMorph. Does anyone have an idea of where the problem comes from? Doru -- www.tudorgirba.com "Every thing has its own flow"

5 11

How can I specify the bindings when evaluating an expression?
by stepharo May 9, 2015

May 9, 2015

I would like to be able to express Compiler new bindings: { a -> 3. b -> 4}; evaluate: 'a + b'; result and get 7 How can I do that? Stef

5 14

Athens BitBlt bug?
by Nicolai Hess May 8, 2015

May 8, 2015

Anyone knows what this BitBlt bug is or was? 12818 <https://pharo.fogbugz.com/default.asp?12818> Last row missing 13236 <https://pharo.fogbugz.com/default.asp?13236> Fix 1 extra height for Cairo surface Because with the fix in 13236, it is not (easily) possible to make a repeating (vertical) pattern paint with 1 pixel height: 14813 <https://pharo.fogbugz.com/default.asp?14813> Wrong size for Athens surface pattern paint from a Form nicolai

3 4