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Is it good practice to NULL a pointer after deleting it?
...t consider this mask to actually be a solution--it is, but not a very good one since it doesn't get to the root of the problem.) But not setting it to NULL masks the far (FAR!) more common problems of accessing the data after it has been deleted.
– Adrian McCarthy
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Breaking out of nested loops [duplicate]
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Without the comments, this will be hard for anyone coming along later to understand.
– Eric Walker
Aug 28 '15 at 21:54
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Return first N key:value pairs from dict
...s a list"
return list(islice(iterable, n))
See it working online: ideone
Update for Python 3.6
n_items = take(n, d.items())
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How to access the ith column of a NumPy multidimensional array?
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And if you want to access more than one column at a time you could do:
>>> test = np.arange(9).reshape((3,3))
>>> test
array([[0, 1, 2],
[3, 4, 5],
[6, 7, 8]])
>>> test[:,[0,2]]
array([[0, 2],
[3, 5],
[6, ...
POST unchecked HTML checkboxes
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Am I the only one who thinks that the underlying design of the checkbox element is terrible? They're a binary control, they should send binary values.
– alexw
Apr 21 '16 at 16:53
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What is an optional value in Swift?
...ny type:
var name: String? = "Bertie"
Optionals (along with Generics) are one of the most difficult Swift concepts to understand. Because of how they are written and used, it's easy to get a wrong idea of what they are. Compare the optional above to creating a normal String:
var name: String = "Ber...
How to grab substring before a specified character jQuery or JavaScript
...ss,] = addy.split(','); This is helpful for cases when you want more than one value, such as: let [callerIdName, callerId] = callerIdString.split('<'); (original callerIdString format is MCMULLIN,PARKER <+1XXXXXXXXXX>)
– parker_codes
Aug 31 '18 at 22...
In C#, how to instantiate a passed generic type inside a method?
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The first one will assign null rather than create an instance for reference types.
– Joel Coehoorn
Mar 18 '09 at 16:27
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Disable back button in android
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@Javanator the second one wouldn't work for me (for API level 16 for example), but the first one works like a charm
– noloman
Jul 9 '13 at 14:27
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What is JSON and why would I use it?
...ork",
"state": "NY",
"postalCode": 10021
},
"phoneNumbers": [
"212 555-1234",
"646 555-4567"
]
}
JSON in JavaScript
JSON (in Javascript) is a string!
People often assume all Javascript objects are JSON and that JSON is a Javascript object. Th...