The idea is to not do the processing if the JSON parsing fails.
From: Cryptic Swarm [mailto:[email protected]]
Sent: Friday, November 9, 2012 11:55
To: Domenic Denicola
Cc: [email protected]
Subject: Re: then
The following should work? Finally expects a block statement, so need to wrap
it in { }...
var info, processed;
try {
info = JSON.parse(json);
} catch (exception) {
console.log("Information JSON malformed.");
} finally { try {
processed = process(info);
} catch (exception) {
console.log("Error processing information.");
}}
On Fri, Nov 9, 2012 at 1:46 PM, Domenic Denicola
<[email protected]<mailto:[email protected]>> wrote:
The recent promise discussion prompted me to recall the following
musing/proposal from Kris Kowal:
https://github.com/kriskowal/q/wiki/On-Exceptions
In short, there's a common code pattern that you can do with promises that you
can't do with synchronous code. The proposal is for a language extension `then`
that would allow synchronous code like this:
var info, processed;
try {
info = JSON.parse(json);
} catch (exception) {
console.log("Information JSON malformed.");
} then {
processed = process(info);
} catch (exception) {
console.log("Error processing information.");
}
Since seeing this, I've run into a lot of situations where a `then` would come
in handy. I wanted to see if anyone else thought this was a great idea, and if
it has any chance as an ES7-level proposal.
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