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Relatively position an element without it taking up space in document flow
...and, you can, however, make a pseudo-relative element, by creating a zero-width, zero-height, relatively positioned element, essentially solely for the purpose of creating a reference point for position, and an absolutely positioned element within that:
<div style="position: relative; width: 0; ...
How do you get the magnitude of a vector in Numpy?
...stackoverflow.com/a/19794741/1959808
– Ioannis Filippidis
Nov 18 '13 at 9:12
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How can I set the aspect ratio in matplotlib?
...th 'equal' aspect ratio:
and one with 'auto' aspect ratio:
The code provided below in the 'original answer' provides a starting off point for an explicitly controlled aspect ratio, but it seems to be ignored once an imshow is called.
Original Answer:
Here's an example of a routine that will ad...
Rails ActionMailer - format sender and recipient name/email address
...re taking user input for name and email, then unless you very carefully validate or escape the name and email, you can end up with an invalid From header by simply concatenating strings. Here is a safe way:
require 'mail'
address = Mail::Address.new email # ex: "john@example.com"
address.display_na...
When to use the brace-enclosed initializer?
...
I think the following could be a good guideline:
If the (single) value you are initializing with is intended to be the exact value of the object, use copy (=) initialization (because then in case of error, you'll never accidentally invoke an explicit constructor,...
Why always ./configure; make; make install; as 3 separate steps?
...ter to install certain libraries and files to certain directories. It is said to run ./configure, but in fact you should change it always.
For example have a look at the Arch Linux packages site. Here you'll see that any package uses a different configure parameter (assume they are using autotools...
Better explanation of when to use Imports/Depends
The " Writing R Extensions " manual provides the following guidance on when to use Imports or Depends:
4 Answers
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Maven: how to override the dependency added by a library
...cify the version in your current pom. The version specified here will override other.
Forcing a version
A version will always be honoured if it is declared in the current POM with a particular version - however, it should be noted that this will also affect other poms downstream if it is itsel...
Android set height and width of Custom view programmatically
...e programatically like that :
graphView.setLayoutParams(new LayoutParams(width, height));
This is fine if you know the exact size of the view. However, if you want a more flexible approach, you can override the onMeasure() method to measure the view more precisely depending on the space available...
What is the difference between self::$bar and static::$bar in PHP?
...
go to phpfiddle.org and run this <?php class Foo { public static $bar = 1234; public static function a( ) { echo 'static'.static::$bar; echo 'self'.self::$bar; } } class Bar extends Foo { public...