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What is “entropy and information gain”?
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1051
I assume entropy was mentioned in the context of building decision trees.
To illustrate, ima...
Selecting data frame rows based on partial string match in a column
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150
I notice that you mention a function %like% in your current approach. I don't know if that's a...
How to fix the uninitialized constant Rake::DSL problem on Heroku?
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answered Jun 7 '11 at 9:31
KaleKale
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Java String - See if a string contains only numbers and not letters
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17 Answers
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What is the difference between BIT and TINYINT in MySQL?
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124
A TINYINT is an 8-bit integer value, a BIT field can store between 1 bit, BIT(1), and 64 bits,...
How to create a video from images with FFmpeg?
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186
See the Create a video slideshow from images – FFmpeg
If your video does not show the fr...
Bootstrap carousel multiple frames at once
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14 Answers
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What is the Ruby (spaceship) operator?
...roovy is another language that supports it. Basically instead of returning 1 (true) or 0 (false) depending on whether the arguments are equal or unequal, the spaceship operator will return 1, 0, or −1 depending on the value of the left argument relative to the right argument.
a <=> b :=
i...
Creating a CSS3 box-shadow on all sides but one
...a div inside #content with this style
#content_over_shadow {
padding: 1em;
position: relative; /* look at this */
background:#fff; /* a solid background (non transparent) */
}
and change #content style (remove paddings) and add shadow
#content {
font-size: 1.8em;
box-shado...
Best way of returning a random boolean value
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edited Aug 23 '15 at 7:45
answered Nov 4 '11 at 16:43
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