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What is the logic behind the “using” keyword in C++?
...1, the using keyword when used for type alias is identical to typedef.
7.1.3.2
A typedef-name can also be introduced by an alias-declaration. The
identifier following the using keyword becomes a typedef-name and the
optional attribute-specifier-seq following the identifier appertains
to that typede...
What function is to replace a substring from a string in C?
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edited Jul 10 '18 at 13:15
Gaurang Tandon
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an...
Eclipse Workspaces: What for and why?
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43
I'll provide you with my vision of somebody who feels very uncomfortable in the Java world, whic...
How do I erase an element from std::vector by index?
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737
To delete a single element, you could do:
std::vector<int> vec;
vec.push_back(6);
vec.p...
Best way to convert string to bytes in Python 3?
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3 Answers
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Why does C++ rand() seem to generate only numbers of the same order of magnitude?
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There are only 3% of numbers between 1 and 230 which are NOT between 225 and 230. So, this sounds pretty normal :)
Because 225 / 230 = 2-5 = 1/32 = 0.03125 = 3.125%
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Get the first element of each tuple in a list in Python [duplicate]
... for x in rows]
Below is a demonstration:
>>> rows = [(1, 2), (3, 4), (5, 6)]
>>> [x[0] for x in rows]
[1, 3, 5]
>>>
Alternately, you could use unpacking instead of x[0]:
res_list = [x for x,_ in rows]
Below is a demonstration:
>>> lst = [(1, 2), (3, 4)...
quick random row selection in Postgres
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edited Nov 13 '15 at 4:28
Antony Hatchkins
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Unix's 'ls' sort by name
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131
My ls sorts by name by default. What are you seeing?
man ls states:
List information about th...