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What is the optimal Jewish toenail cutting algorithm?
...es per foot*, so there are only 5! = 120 unrestricted sequences.
Python example:
#seq is only valid when consecutive elements in the list differ by at least two.
def isValid(seq):
for i in range(len(seq)-1):
a = seq[i]
b = seq[i+1]
if abs(a-b) == 1:
return ...
Define a lambda expression that raises an Exception
How can I write a lambda expression that's equivalent to:
6 Answers
6
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What is a None value?
...
Martijn's answer explains what None is in Python, and correctly states that the book is misleading. Since Python programmers as a rule would never say
Assigning a value of None to a variable is one way to reset it to
its original, empty...
Checking if a double (or float) is NaN in C++
...tation for your compiler, of course...
– dmckee --- ex-moderator kitten
Feb 20 '09 at 19:21
39
-1...
Are 2^n and n*2^n in the same time complexity?
Resources I've found on time complexity are unclear about when it is okay to ignore terms in a time complexity equation, specifically with non-polynomial examples.
...
Why does C++11 not support designated initializer lists as C99? [closed]
...ructors. If it makes sense to initialize just one member then that can be expressed in the program by implementing an appropriate constructor. This is the sort of abstraction C++ promotes.
On the other hand the designated initializers feature is more about exposing and making members easy to access...
How can I access and process nested objects, arrays or JSON?
I have a nested data structure containing objects and arrays. How can I extract the information, i.e. access a specific or multiple values (or keys)?
...
How to convert string representation of list to a list?
...
>>> import ast
>>> x = u'[ "A","B","C" , " D"]'
>>> x = ast.literal_eval(x)
>>> x
['A', 'B', 'C', ' D']
>>> x = [n.strip() for n in x]
>>> x
['A', 'B', 'C', 'D']
ast.literal_eval:
With ast.literal_eval,...
How to get first character of string?
...
What you want is charAt.
var x = 'some string';
alert(x.charAt(0)); // alerts 's'
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Ternary operator is twice as slow as an if-else block?
...
To answer this question, we'll examine the assembly code produced by the X86 and X64 JITs for each of these cases.
X86, if/then
32: foreach (int i in array)
0000007c 33 D2 xor edx,edx
0000007e 83 7E 04 00 ...