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Callback after all asynchronous forEach callbacks are completed
...ou want:
Using a simple counter
function callback () { console.log('all done'); }
var itemsProcessed = 0;
[1, 2, 3].forEach((item, index, array) => {
asyncFunction(item, () => {
itemsProcessed++;
if(itemsProcessed === array.length) {
callback();
}
});
});
(thanks to...
Enum type constraints in C# [duplicate]
...e.
As I'm fond of pointing out, ALL features are unimplemented until someone designs, specs, implements, tests, documents and ships the feature. So far, no one has done that for this one. There's no particularly unusual reason why not; we have lots of other things to do, limited budgets, and this ...
Drop shadow for PNG image in CSS
...
filter: drop-shadow(5px 5px 5px #222222);
}
That worked great for me. One thing to note tho in IE you need the full color (#222222) three characters don't work.
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How to download and save a file from Internet using Java?
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Use apache commons-io, just one line code:
FileUtils.copyURLToFile(URL, File)
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What is “callback hell” and how and why does RX solve it?
Can someone give a clear definition together with a simple example that explains what is a "callback hell" for someone who does not know JavaScript and node.js ?
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Handle file download from ajax post
...the client to download it? I've read a number of similar threads here but none of them provide the answer I'm looking for.
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Using 'starts with' selector on individual class names
... Hmm...clever! I hadn't thought of using space in there. Can one use boolean operators in a jquery selector? Ideally, the above would be 'OR' to avoid the (rare and likely avoidable) case where there are more than one class staring with 'apple-'
– DA.
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Use RSA private key to generate public key?
I don't really understand this one:
9 Answers
9
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How to elegantly deal with timezones
I have a website that is hosted in a different timezone than the users using the application. In addition to this, users can have a specific timezone. I was wondering how other SO users and applications approach this? The most obvious part is that inside the DB, date/times are stored in UTC. When on...
How to check if a string is a valid date
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Here is a simple one liner:
DateTime.parse date rescue nil
I probably wouldn't recommend doing exactly this in every situation in real life as you force the caller to check for nil, eg. particularly when formatting. If you return a default...