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How to find index of list item in Swift?
... // 2
find(arr, "d") // nil
Update for Swift 2.0:
The old find function is not supported any more with Swift 2.0!
With Swift 2.0, Array gains the ability to find the index of an element using a function defined in an extension of CollectionType (which Array implements):...
Bitwise operation and usage
...bit at a time.
AND is 1 only if both of its inputs are 1, otherwise it's 0.
OR is 1 if one or both of its inputs are 1, otherwise it's 0.
XOR is 1 only if exactly one of its inputs are 1, otherwise it's 0.
NOT is 1 only if its input is 0, otherwise it's 0.
These can often be best shown as truth ...
How to get the type of a variable in MATLAB?
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answered Feb 23 '09 at 17:36
Daniel LeCheminantDaniel LeCheminant
47.3k1515 gold badges115115 silver badges113113 bronze badges
...
Center image horizontally within a div
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edited Jan 20 '18 at 23:10
TylerH
18.1k1212 gold badges6161 silver badges8080 bronze badges
...
How to convert an integer to a string in any base?
...tring.digits + string.ascii_letters
def int2base(x, base):
if x < 0:
sign = -1
elif x == 0:
return digs[0]
else:
sign = 1
x *= sign
digits = []
while x:
digits.append(digs[int(x % base)])
x = int(x / base)
if sign < 0:
...
wkhtmltopdf: cannot connect to X server
...
206
or try this (from http://drupal.org/node/870058)
Download wkhtmltopdf. Or better install it w...
Fast Linux File Count for a large number of files
...in a particular directory when there are a very large number of files ( > 100,000).
18 Answers
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Reverse Range in Swift
...:to:by:) is similar but excludes the last value
for i in stride(from:5,to:0,by:-1) { print(i) } // 5 4 3 2 1
Update For latest Swift 2
First of all, protocol extensions change how reverse is used:
for i in (1...5).reverse() { print(i) } // 5 4 3 2 1
Stride has been reworked in Xcode 7 Beta 6. ...
Case preserving substitute in Vim
...toMark Lodato
37.4k55 gold badges3737 silver badges3030 bronze badges
16
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Why aren't ◎ܫ◎ and ☺ valid JavaScript variable names?
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answered Sep 17 '11 at 0:15
Michael MadsenMichael Madsen
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...