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What's the difference between lapply and do.call?
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127
There is a function called Map that may be similar to map in other languages:
lapply returns ...
Redirect all output to file [duplicate]
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1213
That part is written to stderr, use 2> to redirect it. For example:
foo > stdout.txt 2&...
Python - Create list with numbers between 2 values?
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Use range. In Python 2.x it returns a list so all you need is:
>>> range(11, 17)
[11, 12, 13, 14, 15, 16]
In Python 3.x range is a iterator. So, you need to convert it to a list:
>>> list(range(11, 17))
[11, 12, 13, 14, 15, ...
Apache Prefork vs Worker MPM
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120
Prefork and worker are two type of MPM apache provides. Both have their merits and demerits.
B...
What are the GCC default include directories?
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answered Jul 12 '11 at 15:01
Ihor KaharlichenkoIhor Kaharlichenko
4,80611 gold badge2323 silver badges2929 bronze badges
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How to find list intersection?
...y about duplicates then you can use set intersection:
>>> a = [1,2,3,4,5]
>>> b = [1,3,5,6]
>>> list(set(a) & set(b))
[1, 3, 5]
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How to calculate the number of occurrence of a given character in each row of a column of strings?
...a")
q.data
# number string number.of.a
#1 1 greatgreat 2
#2 2 magic 1
#3 3 not 0
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Why prefer two's complement over sign-and-magnitude for signed numbers?
...ve numbers. Check out the article on Wikipedia.
Say you have two numbers, 2 and -1. In your "intuitive" way of representing numbers, they would be 0010 and 1001, respectively (I'm sticking to 4 bits for size). In the two's complement way, they are 0010 and 1111. Now, let's say I want to add them.
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Accessing class variables from a list comprehension in the class definition
... comprehension within the class definition? The following works in Python 2 but fails in Python 3:
5 Answers
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Is “double hashing” a password less secure than just hashing it once?
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270
Hashing a password once is insecure
No, multiple hashes are not less secure; they are an esse...