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ruby inheritance vs mixins
...It follows that entities or things are generally best
modeled in classes, and characteristics or properties of entities or things are
best encapsulated in modules. Correspondingly, as noted in section 4.1.1, class
names tend to be nouns, whereas module names are often adjectives (Stack
versus St...
PowerMockito mock single static method and return object
...o mock a static method m1 from a class which contains 2 static methods, m1 and m2. And I want the method m1 to return an object.
...
How do you commit code as a different user?
...o add in the commits to Git while preserving the commit's original author (and date).
3 Answers
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“Invalid signature file” when attempting to run a .jar
My java program is packaged in a jar file and makes use of an external jar library, bouncy castle . My code compiles fine, but running the jar leads to the following error:
...
Get the current git hash in a Python script
...
The git describe command is a good way of creating a human-presentable "version number" of the code. From the examples in the documentation:
With something like git.git current tree, I get:
[torvalds@g5 git]$ git describe parent
v1.0.4-14-g24147...
How to use SCNetworkReachability in Swift
...the Swift language, which made it a bit confusing. I have now rewritten it and removed everything which refers to Swift 1.x. The older code can
be found in the edit history if somebody needs it.)
This is how you would do it in Swift 2.0 (Xcode 7):
import SystemConfiguration
func connectedToNetwor...
Iterating over dictionaries using 'for' loops
...:
will simply loop over the keys in the dictionary, rather than the keys and values. To loop over both key and value you can use the following:
For Python 3.x:
for key, value in d.items():
For Python 2.x:
for key, value in d.iteritems():
To test for yourself, change the word key to poop.
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How can I plot separate Pandas DataFrames as subplots?
I have a few Pandas DataFrames sharing the same value scale, but having different columns and indices. When invoking df.plot() , I get separate plot images. what I really want is to have them all in the same plot as subplots, but I'm unfortunately failing to come up with a solution to how and would...
Make .gitignore ignore everything except a few files
I understand that a .gitignore file cloaks specified files from Git's version
control. I have a project (LaTeX) that generates lots of extra files (.auth,
.dvi, .pdf, logs, etc) as it runs, but I don't want those to be tracked.
...
Do try/catch blocks hurt performance when exceptions are not thrown?
...mployee we came across a large section of code inside a try{} block. She and an IT representative suggested this can have effects on performance of the code. In fact, they suggested most of the code should be outside of try/catch blocks, and that only important sections should be checked. The Micr...