search for: l240

Hi, (sorry for the wall of text; the issue here appears to be rather complicated) I'm seeing a somewhat strange case where checking whether an S4 object inherits from a parent class defined from another package with 'inherits' fails if that object is materialized through a call to 'load'. That's a mouthful, so I've put together a relatively small reproducible example

...https://github.com/wch/r-source/blob/trunk/src/library/methods/R/SClasses.R#L255 > > Note that we reach this code path as the S3 class cache has not been > populated yet; ie, this code returns NULL: > > https://github.com/wch/r-source/blob/trunk/src/library/methods/R/SClasses.R#L238-L240 > > So, the class hierarchy is looked up using this code: > > if(isTRUE(nzchar(package))) { > whereP <- .requirePackage(package) > value <- get0(cname, whereP, inherits = inherits) > } > > However, because the '.__C__SubMatrix' object i...

...entually gets us here: https://github.com/wch/r-source/blob/trunk/src/library/methods/R/SClasses.R#L255 Note that we reach this code path as the S3 class cache has not been populated yet; ie, this code returns NULL: https://github.com/wch/r-source/blob/trunk/src/library/methods/R/SClasses.R#L238-L240 So, the class hierarchy is looked up using this code: if(isTRUE(nzchar(package))) { whereP <- .requirePackage(package) value <- get0(cname, whereP, inherits = inherits) } However, because the '.__C__SubMatrix' object is only made available in the package's...

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...k/src/library/methods/R/SClasses.R#L255 >>> >>> Note that we reach this code path as the S3 class cache >>> has not been populated yet; ie, this code returns NULL: >>> >>> https://github.com/wch/r-source/blob/trunk/src/library/methods/R/SClasses.R#L238-L240 >>> >>> So, the class hierarchy is looked up using this code: >>> >>> if(isTRUE(nzchar(package))) { whereP <- >>> .requirePackage(package) value <- get0(cname, whereP, >>> inherits = inherits) } >>> >>> However, becaus...

...k/src/library/methods/R/SClasses.R#L255 >> >> Note that we reach this code path as the S3 class cache >> has not been populated yet; ie, this code returns NULL: >> >> https://github.com/wch/r-source/blob/trunk/src/library/methods/R/SClasses.R#L238-L240 >> >> So, the class hierarchy is looked up using this code: >> >> if(isTRUE(nzchar(package))) { whereP <- >> .requirePackage(package) value <- get0(cname, whereP, >> inherits = inherits) } >> >> However, becaus...

...ods/R/SClasses.R#L255 >>>> >>>> Note that we reach this code path as the S3 class cache >>>> has not been populated yet; ie, this code returns NULL: >>>> >>>> https://github.com/wch/r-source/blob/trunk/src/library/methods/R/SClasses.R#L238-L240 >>>> >>>> So, the class hierarchy is looked up using this code: >>>> >>>> if(isTRUE(nzchar(package))) { whereP <- >>>> .requirePackage(package) value <- get0(cname, whereP, >>>> inherits = inherits) } >>>> &gt...

Hi, I''ve got a newbie question--sorry if this is covered elsewhere, I parsed through the archives for awhile and didn''t see it. I''d like to listen for whenever a file is renamed (e.g. foo.txt -> foo.old) and then magically change it back. This sounds odd, but I''m working with a stubborn application and this will actually make things work nice. So, if I do: