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Difference between map, applymap and apply methods in Pandas
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10 Answers
10
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How do I convert a numpy array to (and display) an image?
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240
You could use PIL to create (and display) an image:
from PIL import Image
import numpy as np
w...
I do not want to inherit the child opacity from the parent in CSS
...e 'a' is the level of transparency.
So instead of:
background-color: rgb(0,0,255); opacity: 0.5;
use
background-color: rgba(0,0,255,0.5);
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How to change navbar collapse threshold using Twitter bootstrap-responsive?
I'm using Twitter Bootstrap 2.0.1 in a Rails 3.1.2 project, implemented with bootstrap-sass. I'm loading both the bootstrap.css and the bootstrap-responsive.css files, as well as the bootstrap-collapse.js Javascript.
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Simple regular expression for a decimal with a precision of 2
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408
Valid regex tokens vary by implementation. A generic form is:
[0-9]+(\.[0-9][0-9]?)?
More co...
How can I convert a Unix timestamp to DateTime and vice versa?
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1059
Here's what you need:
public static DateTime UnixTimeStampToDateTime( double unixTimeStamp )
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How do I include negative decimal numbers in this regular expression?
...e with positive values, but I want it to also allow negative values e.g. -10, -125.5 etc.
14 Answers
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Ruby on Rails and Rake problems: uninitialized constant Rake::DSL
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A tweet from DHH earlier. Rake .9.0 breaks Rails and several other things, you need to:
gem "rake", "0.8.7"
in your Gemfile.
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CSS: bolding some text without changing its container's size
...h a little compromise, I used text-shadow instead.
li:hover {text-shadow:0px 0px 1px black;}
Here's a working example:
body {
font-family: segoe ui;
}
ul li {
display: inline-block;
border-left: 1px solid silver;
padding: 5px
}
.textshadow :hover {
text-shadow: 0px 0p...
HSL to RGB color conversion
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308
Garry Tan posted a Javascript solution on his blog (which he attributes to a now defunct mjijac...