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Why does modern Perl avoid UTF-8 by default?
...ded as UTF‑8. Although once upon a time this pragma did other things, it now serves this one singular purpose alone and no other:
use utf8;
Declare that anything that opens a filehandle within this lexical scope but not elsewhere is to assume that that stream is encoded in UTF‑8 unless you tel...
while (1) vs. while(True) — Why is there a difference (in python 2 bytecode)?
... 0 (True)
6 BINARY_ADD
9 RETURN_VALUE
Now compare:
>>> dis.dis('1 + 1')
1 0 LOAD_CONST 1 (2)
3 RETURN_VALUE
It's emitting a LOAD_GLOBAL (True) for each True, and there's nothing the optimizer can do with a globa...
When to use RSpec let()?
...able, and a few of them started writing with it. I've got enough spec code now using let() that I run into some of those problems too. I find myself going to the example, and starting from the innermost example group, work myself back up. It is the same skill as using a highly meta-programmable envi...
Sublime Text 2: Trim trailing white space on demand
I know that Sublime Text 2 can delete the trailing white space on files upon saving.
5 Answers
...
How can I save an image to the camera roll?
...r your patience qegal. I haven't had a chance to revisit this issue until now. Your EDIT us super helpful. The image is in the app's bundle. There are several images in the app and they can be viewed as small thumbnails. When a small thumbnail is selected it goes to a new view and a fullscreen v...
How do I run Visual Studio as an administrator by default?
... 1. Some are not applicable because the compatibility tab is missing as of now (W10 V1803). 2. They may make VS start as an administrator, but opening a solution directly still does not start VS as an administrator.
– Hong
May 10 '18 at 20:23
...
Django: How to completely uninstall a Django app?
...py makemigrations -n drop_all_tables my_app_to_remove
The directory looks now like this:
my_app_to_remove/
my_app_to_remove/__init__.py
my_app_to_remove/migrations
my_app_to_remove/migrations/0001_initial.py
my_app_to_remove/migrations/....
my_app_to_remove/migrations/0030_drop_all_tables.py
my_ap...
Testing if object is of generic type in C#
...
I assume that you don't just want to know if the type is generic, but if an object is an instance of a particular generic type, without knowing the type arguments.
It's not terribly simple, unfortunately. It's not too bad if the generic type is a class (as it is...
Why would an Enum implement an Interface?
...plexOperators implements Operator {
// can't think of an example right now :-/
}
Now to get a list of both the Simple + Complex Operators:
List<Operator> operators = new ArrayList<Operator>();
operators.addAll(Arrays.asList(SimpleOperators.values()));
operators.addAll(Arrays.asLi...
How to write header row with csv.DictWriter?
...f writing the header row.
Simple example of using the writeheader() method now available in 2.7 / 3.2:
from collections import OrderedDict
ordered_fieldnames = OrderedDict([('field1',None),('field2',None)])
with open(outfile,'wb') as fou:
dw = csv.DictWriter(fou, delimiter='\t', fieldnames=orde...