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What are the complexity guarantees of the standard containers?
...; Make an empty vector. O(1)
vector<T> v(n); Make a vector with N elements. O(n)
vector<T> v(n, value); Make a vector with N elements, initialized to value. O(n)
vector<T> v(begin, end); ...
How to change font size on part of the page in LaTeX?
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103
\begingroup
\fontsize{10pt}{12pt}\selectfont
\begin{verbatim}
% how to set f...
How can I create a correlation matrix in R?
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104
An example,
d &lt- data.frame(x1=rnorm(10),
x2=rnorm(10),
...
add column to mysql table if it does not exist
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omp parallel vs. omp parallel for
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edited Jul 3 '18 at 8:44
Grv10India
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answered Sep 30 '09 at...
iPad browser WIDTH & HEIGHT standard
...sults of running jquery's $(window).width() and $(window).height() on iPad 1 browser.
When page has no meta viewport tag:
Portrait: 980x1208
Landscape: 980x661
When page has either of these two meta tags:
<meta name="viewport" content="initial-scale=1,user-scalable=no,maximum-scale=1,width=...
What is a Context Free Grammar?
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112
A context free grammar is a grammar which satisfies certain properties. In computer science, g...
String.Join method that ignores empty strings?
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174
VB.NET
String.Join(",", myArray.Where(Function(s) Not String.IsNullOrEmpty(s)))
C#
String.J...
Python `if x is not None` or `if not x is None`?
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1029
There's no performance difference, as they compile to the same bytecode:
Python 2.6.2 (r262:...
Conditional Replace Pandas
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182
.ix indexer works okay for pandas version prior to 0.20.0, but since pandas 0.20.0, the .ix in...