search for: stopiteration

Hi Kevin, To elaborate on Philip's point, depending on the state Pyston's runtime already is in, you may have the choice of using a hybrid of a "pending exception" word in your runtime thread structure, and an implicit alternate ("exceptional") return address for calls into functions that may throw. This lets you elide the check on the pending exception word after

...luating expression\ :\n") print(r) } tryCatch(accumulator(list(r), i), error = function(e) { cat("error calling combine function:\n") print(e) NULL }) \ i <- i + 1 }}, error = function(e) { if (!identical(conditionMessage(e), "StopIteration")) stop(simpleError(conditionMessage(e), expr))}) 10: doSEQ(obj, substitute(ex), parent.frame()) 11: foreach(chr = chrs, .packages = "GenomicFeaturesX", .verbose = TRUE) %do% { .gc <- duplicate(gcache, pre.load = NULL) on.exit(dispose(.gc)) cat("===",...

I am writing an indexer that will crawl our web site. Following the recommendation here: https://trac.xapian.org/wiki/FAQ/UniqueIds I'm using the URL as the unique ID for each document. I see how to get a document from the xapian database if I know its URL, but what I need is also to be able to find out the URL from the document. Does this mean I need to store the URL in a value in

This is related to the general question of efficiency of unwinds. I'm mulling over whether to use the Java-style or Python-style iterator protocol for my language. The Python style is to have a special exception (StopIteration) that is thrown when the end of the sequence is reached. The Java style is to have a separate "hasNext" method on the iterator object that says whether or not the sequence is finished. So the question is, what's the trade-off. In most languages that support exceptions, you tend to...

I'm using caret to assess classifier performance (and it's great!). However, I've found that my results differ between R2.* and R3.* - reported accuracies are reduced dramatically. I suspect that a code change to kernlab ksvm may be responsible (see version 5.16-24 here: http://cran.r-project.org/web/packages/caret/news.html). I get very different results between caret_5.15-61 +