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How to clone a case class instance and change just one field in Scala?
...e fully immutable, and are held in immutable collections, to be eventually modified by an Akka actor.
5 Answers
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Building a minimal plugin architecture in Python
...rectory called "plugins" which the main app can poll and then use imp.load_module to pick up files, look for a well-known entry point possibly with module-level config params, and go from there. I use file-monitoring stuff for a certain amount of dynamism in which plugins are active, but that's a ni...
How to find all the subclasses of a class given its name?
...on of a subclass hasn't been executed yet - for example, if the subclass's module hasn't been imported yet - then that subclass doesn't exist yet, and __subclasses__ won't find it.
You mentioned "given its name". Since Python classes are first-class objects, you don't need to use a string with th...
How to track untracked content?
...ns/open_flash_chart_2 as “gitlink” entry, but never defined it as a submodule. Effectively you are using the internal feature that git submodule uses (gitlink entries) but you are not using the submodule feature itself.
You probably did something like this:
git clone git://github.com/korin/op...
Is there a way of having git show lines added, lines changed and lines removed?
... diff --numstat
to get numerical diff information.
As far as separating modification from an add and remove pair, --word-diff might help. You could try something like this:
MOD_PATTERN='^.+(\[-|\{\+).*$' \
ADD_PATTERN='^\{\+.*\+\}$' \
REM_PATTERN='^\[-.*-\]$' \
git diff --word-diff --unified=0 |...
NAnt or MSBuild, which one to choose and when?
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It is worth noting that you do not need to modify the .csproj files themselves. You can use a MyProject.csproj.user file to do those modifications, leaving your .csproj file clean and pristine. MSBuild knows to look for those .user files and will import them into the ...
Iterating through directories with Python
...Another way of returning all files in subdirectories is to use the pathlib module, introduced in Python 3.4, which provides an object oriented approach to handling filesystem paths (Pathlib is also available on Python 2.7 via the pathlib2 module on PyPi):
from pathlib import Path
rootdir = Path('C...
How to manage local vs production settings in Django?
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I prefer calling the module settings_local as opposed to local_settings to group it with settings.py in alphabetical folder listings. Keep settings_local.py out of version control using .gitignore as credentials don't belong to Git. Imagine open ...
Focus-follows-mouse (plus auto-raise) on Mac OS X
... /Technically/ this works on 10.12 "macOS sierra", but lack of modifier key standards across apps and wm make another Yegge-esque tragedy. ⌘-clicking a link in browsers also opens a new tab. In Chrome, ⌘-click on a tab is also multi-select. At least ⌃⌥-click works well enoug...
Is 161803398 A 'Special' Number? Inside of Math.Random()
...ld think that a more relevant way to use the golden ratio would be to use (modulus/phi) rather than using a base-10 representation of the digits in code that has nothing to do with base 10. An interesting characteristic of phi which I didn't see on that page is that from what I can tell, for any in...