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How important is the order of columns in indexes?
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See how restricting on A first, as your first column eliminates more results than restricting on your second column first? It's easier if you picture how the index must be traversed across, column 1, then column 2, etc...you see that lopping off most of the results in the fist pass makes the 2nd ...
Rebase feature branch onto another feature branch
...Branch2:
git rebase Branch1
Which would leave you with the desired result in Branch2:
a -- b -- c <-- Master
\
d -- e <-- Branch1
\
d -- e -- f' -- g' <-- Branch2
You can delete Branch1.
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What's the scope of the “using” declaration in C++?
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using namespace std; // only applies to the function's scope
vector<int> myVector;
}
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HTML img tag: title attribute vs. alt attribute?
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I'd go for both. Title will show a nice tooltip in all browsers and alt will give a description when browsing in a browser with no images.
That said, I'd love to see some stats of how many "surfers" out there going to a "store" to browse merchandise actually have ima...
Multiple GitHub Accounts & SSH Config
... that connections to github used the correct profile. Previously they defaulted to the first public key.
For Could not open a connection to your authentication agent when using ssh-add,check:
https://stackoverflow.com/a/17695338/1760313
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iOS 7 parallax effect in my view controller
...WithKeyPath:@"center.y"
type:UIInterpolatingMotionEffectTypeTiltAlongVerticalAxis];
verticalMotionEffect.minimumRelativeValue = @(-10);
verticalMotionEffect.maximumRelativeValue = @(10);
// Set horizontal effect
UIInterpolatingMotionEffect *horizontalMotionEffect =
[[UIInterpolatin...
rotating axis labels in R
...u mean, but try setting las=1. Here's an example:
require(grDevices)
tN <- table(Ni <- stats::rpois(100, lambda=5))
r <- barplot(tN, col=rainbow(20), las=1)
That represents the style of axis labels. (0=parallel, 1=all horizontal, 2=all perpendicular to axis, 3=all vertical)
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How do I attach events to dynamic HTML elements with jQuery? [duplicate]
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Not work when <a> element have href address that set to http://????
– Mostafa
Jul 4 '16 at 15:50
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Opposite of String.Split with separators (.net)
...(array.Length > 0)
{
builder.Append(array[0]);
}
for (var i = 1; i < array.Length; ++i)
{
builder.Append(separator);
builder.Append(array[i]);
}
string joined = builder.ToString(); // "a b c"
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Difference between File.separator and slash in paths
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Although using File.separator to reference a file name is overkill (for those who imagine far off lands, I imagine their JVM implementation would replace a / with a : just like the windows jvm replaces it with a \).
However, ...