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Understanding the Event Loop
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1: If we are talking about a single-threaded application, then what processes setTimeouts while JS engine accepts more requests and executes them? Isn't that single thread will continue working on other requests? Then who is going to keep working on setTimeout wh...
Autoresizing masks programmatically vs Interface Builder / xib / nib
...e margins OR'ed together on one line like the example above. Just hard to read.
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Lock, mutex, semaphore… what's the difference?
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A lock allows only one thread to enter the part that's locked and the lock is not shared with any other processes.
A mutex is the same as a lock but it can be system wide (shared by multiple processes).
A semaphore does the same as a mutex but allo...
C#: how to get first char of a string?
...0] and MyString.ToCharArray()[0] is that the former treats the string as a read-only array, while ToCharArray() creates a new array. The former will be quicker (along with easier) for almost anything where it will work, but ToCharArray can be necessary if you have a method that needs to accept an ar...
The split() method in Java does not work on a dot (.) [duplicate]
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It works fine. Did you read the documentation? The string is converted to a regular expression.
. is the special character matching all input characters.
As with any regular expression special character, you escape with a \. You need an additio...
Sort JavaScript object by key
...eturning an assignment), but this one works for me and is easier for me to read: Object.keys(dict).sort().reduce((r, k) => Object.assign(r, { [k]: dict[k] }), {});
– aks.
Jun 22 '17 at 22:48
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How do I remove a key from a JavaScript object? [duplicate]
...ect["Cow"];
// Example 3
delete thisIsObject.Cow;
If you're interested, read Understanding Delete for an in-depth explanation.
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Adding event listeners to dynamically added elements using jQuery [duplicate]
...ssible so it doesn't "bubble" up further then it needs to. I recommend you read up on event bubbling to get a better understanding.
– Jack
Jan 2 '19 at 20:26
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In Firebase, is there a way to get the number of children of a node without loading all the node dat
...parent.child('upvotes_count').set(event.data.numChildren());
});
You can read the Documentation to know how to Get Started with Cloud Functions.
Also, another example of counting posts is here:
https://github.com/firebase/functions-samples/blob/master/child-count/functions/index.js
Update Januar...
What do numbers using 0x notation mean?
...00--1999 would represent the negative numbers. My question was about human-readable notation, though knowing how computers do it might help someone else, so thanks :)
– Luc
Mar 7 at 10:07
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