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Creating an empty file in Ruby: “touch” equivalent?
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edited Mar 27 '13 at 23:04
answered Nov 11 '11 at 22:14
D...
PostgreSQL query to return results as a comma separated list
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209
SELECT string_agg(id::text, ',') FROM table
Requires PostgreSQL 9.0 but that's not a problem.
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How can I stop a Postgres script when it encounters an error?
...m Peter Eisentraut. Thank you, Peter!
http://petereisentraut.blogspot.com/2010/03/running-sql-scripts-with-psql.html
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Using PropertyInfo to find out the property type
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answered Sep 16 '10 at 5:28
Igor ZevakaIgor Zevaka
67.1k2626 gold badges104104 silver badges124124 bronze badges
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C++ Tuple vs Struct
...nchmark code and performance results collected using gcc-4.9.2 and clang-4.0.0:
std::vector<StructData> test_struct_data(const size_t N) {
std::vector<StructData> data(N);
std::transform(data.begin(), data.end(), data.begin(), [N](auto item) {
std::random_device rd;
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How does IPython's magic %paste work?
...is %cpaste
– yekta
Dec 28 '12 at 15:03
61
You actually can copy code to IPython directly: you may...
C/C++ NaN constant (literal)?
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answered May 22 '13 at 12:07
Mike SeymourMike Seymour
230k2424 gold badges396396 silver badges602602 bronze badges
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How to show Page Loading div until the page has finished loading?
...d the style class for the div and image to your CSS:
#loading {
width: 100%;
height: 100%;
top: 0;
left: 0;
position: fixed;
display: block;
opacity: 0.7;
background-color: #fff;
z-index: 99;
text-align: center;
}
#loading-image {
position: absolute;
top: 100px;
left: 240...
How do I use the new computeIfAbsent function?
...g a map and putting the values in it for the base cases, namely, fibonnaci(0) and fibonacci(1):
private static Map<Integer,Long> memo = new HashMap<>();
static {
memo.put(0,0L); //fibonacci(0)
memo.put(1,1L); //fibonacci(1)
}
And for the inductive step all we have to do is redef...
Skipping Iterations in Python
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Richie Bendall
2,68011 gold badge1515 silver badges2929 bronze badges
answered Feb 14 '09 at 19:50
AndréAndré
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