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List comprehension on a nested list?
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Here is how to convert nested for loop to nested list comprehension:
Here is how nested list comprehension works:
l a b c d e f
↓ ↓ ↓ ↓ ↓ ↓ ↓
In [1]: l = [ [ [ [ [ [ 1 ] ] ] ] ] ]
In [2]: for a in l...
Bold & Non-Bold Text In A Single UILabel?
...et nonBoldRange = targetString.range(of: formatter.string(from: date))
// Convert Range<Int> into NSRange
let nonBoldNSRange: NSRange? = nonBoldRange == nil ?
nil :
NSMakeRange(targetString.distance(from: targetString.startIndex, to: nonBoldRange!.lowerBound),
targetSt...
How do I upload a file with metadata using a REST web service?
...erver side, retrieve the file normally, and retrieve the json as a string. Convert the string to an object, which is usually one line of code no matter what programming language you use.
(Yes, it works great. Doing it in one of my apps.)
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Standard way to embed version into python package?
...version__ = '.'.join(__version_info__)
(And it would be fairly simple to convert auto-incrementing portions of version numbers to a string using str().)
Of course, from what I've seen, people tend to use something like the previously-mentioned version when using __version_info__, and as such stor...
Is the Javascript date object always one day off?
...ne.". If I do new Date('2012-01-01 GMT') it still applies an offset as it converts it to the user's local date time.
– AaronLS
Jan 28 '13 at 21:08
7
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What's the difference between compiled and interpreted language?
...s that I still have. In a compiled implementation, the original program is converted into native machine instructions. How come? I thought C, for instance, after compilation would produce assembly code, which again anyway needs to be assembled by a native assembler into the underlying machine's mach...
Is there a performance impact when calling ToList()?
...u should not use ToList() unless work you are doing cannot be done without converting collection to List. For example if you just want to iterate through the collection you don't need to perform ToList
If you are performing queries against a data source for example a Database using LINQ to SQL then...
Validate decimal numbers in JavaScript - IsNumeric()
...ial rule that says NaN is never equal to NaN, and so a value that can't be converted to a number (and only values that cannot be converted to numbers) will result in false.
The check on the length is for a special case involving empty strings. Also note that it falls down on your 0x89f test, but t...
How to change a django QueryDict to Python Dict?
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This is what I've ended up using:
def qdict_to_dict(qdict):
"""Convert a Django QueryDict to a Python dict.
Single-value fields are put in directly, and for multi-value fields, a list
of all values is stored at the field's key.
"""
return {k: v[0] if len(v) == 1 else v ...
How to split a string in Haskell?
... Data.List.Split> l
["1","2","3","4"]
Prelude Data.List.Split> let { convert :: [String] -> [Integer]; convert = map read }
Prelude Data.List.Split> let l2 = convert l
Prelude Data.List.Split> :t l2
l2 :: [Integer]
Prelude Data.List.Split> l2
[1,2,3,4]
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