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How to remove Firefox's dotted outline on BUTTONS as well as links?
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Yea it works for me too! Now how can it be done for selects ?
– 7wp
Feb 3 '10 at 19:54
16
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How to declare array of zeros in python (or an array of a certain size) [duplicate]
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Just for completeness: To declare a multidimensional list of zeros in python you have to use a list comprehension like this:
buckets = [[0 for col in range(5)] for row in range(10)]
to avoid reference sharing between the rows.
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Cross-browser custom styling for file upload button [duplicate]
... use the <label> tag around a hidden file upload button. This allows for even more freedom in styling than the styling allowed via webkit's built-in styling[1].
The label tag was made for the exact purpose of directing any click events on it to the child inputs[2], so using that, you won't re...
Semi-transparent color layer over background-image?
...lute;
top: 0;
left: 0;
width: 100%;
height: 100%;
}
HTML for this:
<div class="background">
<div class="layer">
</div>
</div>
Of course you need to define a width and height to the .background class, if there are no other elements inside of it
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Replace all 0 values to NA
...ll object in R
which is unique and, I guess, can be seen as the most uninformative and empty object.1 Then it becomes not so surprising that
data.frame(x = c(1, NULL, 2))
# x
# 1 1
# 2 2
That is, R does not reserve any space for this null object.2 Meanwhile, looking at ?'NA' we see that
N...
Tetris-ing an array
...n prefix. Since it is associative and commutative the order doesn't matter for the result.
This is the same as for other binary operations like for example addition or greatest common divisor.
share
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omp parallel vs. omp parallel for
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I don't think there is any difference, one is a shortcut for the other. Although your exact implementation might deal with them differently.
The combined parallel worksharing constructs are a shortcut for
specifying a parallel construct containing one worksharing construct
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Gem::LoadError for mysql2 gem, but it's already in Gemfile
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It worked for me when I specified a mysql2 gem version before the newest one (0.4.0).
For some reason there is a problem with Rails 4.2.4 and that gem 0.4.0. So, to solve the problem I just specified the previous gem released: 0.3.20...
How can I truncate a datetime in SQL Server?
...her additional votes, even several years later, and so I need to update it for modern versions of Sql Server. For Sql Server 2008 and later, it's simple:
cast(getDate() As Date)
Note that the last three paragraphs near the bottom still apply, and you often need to take a step back and find a way ...
C# Sort and OrderBy comparison
...t COUNT = 1000000;
Stopwatch watch = Stopwatch.StartNew();
for (int i = 0; i < COUNT; i++)
{
Sort(persons);
}
watch.Stop();
Console.WriteLine("Sort: {0}ms", watch.ElapsedMilliseconds);
watch = Stopwatch.StartNew();
for (...