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How to unit test abstract classes: extend with stubs?
...of the Abstract class under test. Those methods can be no-op, return null, etc. as they will not be tested. The test class tests only the non-abstract public API (ie the Interface implemented by the Abstract class). For any class that extends the Abstract class you'll need additional test classes ...
Specifying and saving a figure with exact size in pixels
...the same pixel dimensions as the im array.
Note: the OP specified no axes, etc. which is what this solution does exactly. If one wants to add axes, ticks, etc. my preferred approach is to do that on a separate plot, saving with transparent=True (PNG or PDF) then overlay the latter on the image. This...
Given an RGB value, how do I create a tint (or shade)?
...ading and tinting:
For shades, multiply each component by 1/4, 1/2, 3/4, etc., of its
previous value. The smaller the factor, the darker the shade.
For tints, calculate (255 - previous value), multiply that by 1/4,
1/2, 3/4, etc. (the greater the factor, the lighter the tint), and add that to the ...
Why does Python pep-8 strongly recommend spaces over tabs for indentation?
... and b) easily dealt with by technical means (editors, conversion scripts, etc.), there is a clear way to end all discussion: choose one.
Guido was the one to choose. He didn't even have to give a reason, but he still did by referring to empirical data.
For all other purposes you can either take t...
Why is the default value of the string type null instead of an empty string?
...r null before I can safely apply methods like ToUpper() , StartWith() etc...
14 Answers
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What is `mt=8` in iTunes links for the App Store?
...nk itself (e.g. RSS Feed Generator, Search API,
Enterprise Partner Feed, etc.). This helps identify where the link
came from for your benefit, but doesn’t actually affect the end user
experience. This can be removed if necessary to tidy up the link.
Affiliate Specific Parameters
AT...
What is the best way to do a substring in a batch file?
...s is zero based, so the first character is at position 0, the second at 1, etc.
To get substrings of argument variables such as %0, %1, etc. you have to assign them to a normal environment variable using set first:
:: Does not work:
@echo %1:~10,5
:: Assign argument to local variable first:
set v...
Download the Android SDK components for offline install
...ouu will find all the list of xml files where packages are available
Fetching https://dl-ssl.google.com/android/repository/addons_list-2.xml
Fetched Add-ons List successfully
Fetching URL: https://dl-ssl.google.com/android/repository/repository-7.xml
Validate XML: https://dl-ssl.google.co...
Why Doesn't C# Allow Static Methods to Implement an Interface?
...int id) { ... }
void SomeOtherMethod()
{
//do work...
}
}
in order to use instantination for solving the static interface problem we need to do the following thing:
public class Customer: IDoSomeStaticMath
{
//create new customer
public Customer(Transaction t) { ... }
//open exi...
Calculate number of hours between 2 dates in PHP
...at it considers different timezones, leap years, leap seconds, summertime, etc. And on top of that it's very easy to use. Here's what you want with the help of this objects:
// Create two new DateTime-objects...
$date1 = new DateTime('2006-04-12T12:30:00');
$date2 = new DateTime('2006-04-14T11:30:0...