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How to detect if multiple keys are pressed at once using JavaScript?
...eep track of multiple keys. The array can then be used to check for one or more keys at once.
Just to explain, let's say you press A and B, each fires a keydown event that sets map[e.keyCode] to the value of e.type == keydown, which evaluates to either true or false. Now both map[65] and map[66] are...
How do you represent a graph in Haskell?
...hat makes my brain hurt (because I haven't done much of it yet). I've done more of my substantial programming in Mercury than Haskell so far, and Mercury is strict so knot-tying doesn't help.
Usually when I've run into this before I've just resorted to additional indirection, as you're suggesting; ...
Entity Framework 6 Code first Default value
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Rails: Is there a rails trick to adding commas to large numbers?
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Create an array with same element repeated multiple times
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It's much more efficient to allocate all of the entries up front, with arr = new Array(len);, then assign to them by index in the loop, i.e. arr[i] = value;. That way you only pay O(n) rather than having to keep reallocating the array...
Is it a good practice to use try-except-else in Python?
...rns information that may be stale. The try-except-else style will produce more reliable code in these cases.
"It my understanding that exceptions are not errors, they should only
be used for exceptional conditions"
In some other languages, that rule reflects their cultural norms as reflecte...
What is a “web service” in plain English?
...ther programs can understand the output.
The full definition is obviously more complex but you asked for plain English.
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How do I translate an ISO 8601 datetime string into a Python datetime object? [duplicate]
... - it is only intended as the inverse operation of datetime.isoformat(). A more full-featured ISO 8601 parser, dateutil.parser.isoparse is available in the third-party package dateutil. So yeah, even for Python 3.7 we are back to the dateutil package.
– Voicu
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What is the difference between int, Int16, Int32 and Int64?
... his answer:
int and Int32 are indeed synonymous; int will be a little more
familiar looking, Int32 makes the 32-bitness more explicit to those
reading your code. I would be inclined to use int where I just need
'an integer', Int32 where the size is important (cryptographic code,
structu...
How do I install and use curl on Windows?
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