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How can I determine whether a 2D Point is within a Polygon?
...e coordinate system scale you use for drawing. If your pixel step width is 1.0, then just choose 1.0 (yet 0.1 would have worked as well)
Now that we have the ray with its start and end coordinates, the problem shifts from "is the point within the polygon" to "how often does the ray intersects a pol...
Positioning element at center of screen
... <meta name="viewport" content="width=device-width, initial-scale=1.0">
<style>
body > div {
position: absolute;
top: 0;
bottom: 0;
left: 0;
right: 0;
display: fle...
Difference between `constexpr` and `const`
...m; }
private:
double re;
double im;
};
constexpr complex COMP(0.0, 1.0); // creates a literal complex
double x = 1.0;
constexpr complex cx1(x, 0); // error: x is not a constant expression
const complex cx2(x, 1); // OK: runtime initialization
constexpr d...
How to add a “readonly” attribute to an ?
...only" value="bar" /> validates perfectly at validator.w3.org with xhtml 1.0 strict.
– Jonas Stensved
Aug 9 '11 at 13:16
17
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How to change background color in android app
...ode in the layout.xml or /res/layout/activity_main.xml:
<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:padding="10dp"
a...
Finding the average of a list
...
@FooBarUser then you should calc k = 1.0/len(l), and then reduce: reduce(lambda x, y: x + y * k, l)
– Arseniy
May 14 '14 at 5:09
...
Find which version of package is installed with pip
...d
distribute (Current: 0.6.34 Latest: 0.7.3)
django-bootstrap3 (Current: 1.1.0 Latest: 4.3.0)
Django (Current: 1.5.4 Latest: 1.6.4)
Jinja2 (Current: 2.6 Latest: 2.8)
So combining with AdamKG 's answer :
$ pip list --outdated | grep Jinja2
Jinja2 (Current: 2.6 Latest: 2.8)
Check pip-tools too : ...
How to initialise a string from NSData in Swift
...aString = String(data: fooData, encoding: NSUTF8StringEncoding)
in Swift 1.0:
var dataString = NSString(data: fooData, encoding:NSUTF8StringEncoding)
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Using HTML and Local Images Within UIWebView
... use base64 image string.
NSData* data = UIImageJPEGRepresentation(image, 1.0f);
NSString *strEncoded = [data base64Encoding];
<img src='data:image/png;base64,%@ '/>,strEncoded
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Making an iframe responsive
...;
<meta name="viewport" content="width=device-width,initial-scale=1.0">
<style>
html body {width: 100%;height: 100%;padding: 0px;margin: 0px;overflow: hidden;font-family: arial;font-size: 10px;color: #6e6e6e;background-color: #000;} #preview-frame {width: 100%;backgroun...