chaining

I'm having trouble understanding a basic concept of error handling with chaining promises. In order to learn the rules, I have written a simple example, guessing what the result will be. But unfortunatly it doesn't behave as I though it will. I have read multiple articles about the subject but perhaps can't I get details because of my poor english language. Anyway, here is my code : var promiseStart = $q.when("start"); var promise1 = promiseStart.then(function() { return Serviceforpromise1.get(); }); var promise2 = promise1.then(function(data1) { return Serviceforpromise2.get(data1); }

This question already has an answer here: Proper/elegant way of implementing C++ exception chaining? 4 answers How to simulate inner exception in C++ 6 answers I just finished work on a C++-program where I've implemented my own exceptions (although derived from std::exception). The practice I've applied when one exception causes a chain reaction, propagating the error upwards and giving rise to other exceptions, is to concatenate the error message at each appropriate step across the modules (read classes). I.e. the old exception itself is dropped and a new exception is created, but with a

I couldn't find anything on this subject on Google, so I think I should ask it here: Is it possible to chain functions with Python, like jQuery does? ['my', 'list'].foo1(arg1, arg2).foo2(arg1, arg2).foo3(arg1, arg2) #etc... I am losing a lot of space and readability when I write this code: foo3(foo2(foo1(['my', 'list'], arg1, arg2), arg1, arg2), arg1, arg2) #etc... There seems to exist some illusive library for creating such functions, but I can't seem to see why this has to be so complicated-looking... Thanks! Here's an expansion of Simon's ListMutator suggestion: class ListMutator(object):

I'd like to know how I could I thorw a "final" Exception , containing a detail message with all the detail messages of a number of chained exceptions. For example suppose a code like this: try { try { try { try { //Some error here } catch (Exception e) { throw new Exception("FIRST EXCEPTION", e); } } catch (Exception e) { throw new Exception("SECOND EXCEPTION", e); } } catch (Exception e) { throw new Exception("THIRD EXCEPTION", e); } } catch (Exception e) { String allMessages = //all the messages throw new Exception(allMessages, e); } I'm not interested in the full stackTrace , but only in

Normally, PowerShell commands can be chained with semicolons. The following opens 2 notepads: PS> notepad; notepad You can also chain a more complex statement: PS> Add-Type -AssemblyName System.IO.Compression; ` > $src = "C:\aFolder"; $zip="C:\my.zip"; ` > [io.compression.zipfile]::CreateFromDirectory($src, $zip) Chained PowerShell commands can also be called from a CMD command-line: C:\> powershell notepad; notepad This post describes a method to create a .Net 4.0 PowerShell prompt, even if .Net 2.0 is the active framework on your OS. You create a .cmd script, and run that. Now you're in a

Is it possible to remove xml attributes from XSLT AND work with the resulting transform? In other words, I have the following XML: <?xml version="1.0" encoding="iso-8859-1"?> <?xml-stylesheet type="text/xsl" href="XML_TEST.xslt"?> <report xmlns="abc123"> <book> <page id="22"> </page> <page id="23"> </page> </book> </report> I know that I can use the following XSLT to strip the attributes: <xsl:template match ="@*" > <xsl:attribute name ="{local-name()}" > <xsl:value-of select ="." /> </xsl:attribute> <xsl:apply-templates/> </xsl:template> <xsl:template match ="*" > <xsl:element name ="{local