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How do SO_REUSEADDR and SO_REUSEPORT differ?
...he system will have to choose a specific port itself in that case (usually from a predefined, OS specific range of source ports). A similar wildcard exists for the source address, which can be "any address" (0.0.0.0 in case of IPv4 and :: in case of IPv6). Unlike in case of ports, a socket can reall...
How can I use break or continue within for loop in Twig template?
...
From docs TWIG docs:
Unlike in PHP, it's not possible to break or continue in a loop.
But still:
You can however filter the sequence during iteration which allows you to skip items.
Example 1 (for huge lists you...
How to apply a style to an embedded SVG?
...ort url(my-style.css)".
Of course you can directly link to the stylesheet from the svg file too, without doing any scripting. Either of the following should work:
<?xml version="1.0" encoding="UTF-8"?>
<?xml-stylesheet href="my-style.css" type="text/css"?>
<svg xmlns="http://www.w3....
Python dict how to create key or append an element to key?
...
You can use a defaultdict for this.
from collections import defaultdict
d = defaultdict(list)
d['key'].append('mykey')
This is slightly more efficient than setdefault since you don't end up creating new lists that you don't end up using. Every call to setdefa...
Why Large Object Heap and why do we care?
...the system to wait until a gen2 collection before trying to reclaim memory from even short-lived LOH objects, I can't see any performance advantage to declaring LOH objects (and any objects to which they hold references) unconditionally live during gen0 and gen1 collections. Are there some optimiza...
How do you skip a unit test in Django?
...Python's unittest module has a few decorators:
There is plain old @skip:
from unittest import skip
@skip("Don't want to test")
def test_something():
...
If you can't use @skip for some reason, @skipIf should work. Just trick it to always skip with the argument True:
@skipIf(True, "I don't...
Why does Node.js' fs.readFile() return a buffer instead of string?
...
From the docs:
If no encoding is specified, then the raw buffer is returned.
Which might explain the <Buffer ...>. Specify a valid encoding, for example utf-8, as your second parameter after the filename. Such as,...
How do you find the current user in a Windows environment?
...an get a complete list of environment variables by running the command set from the command prompt.
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What is git actually doing when it says it is “resolving deltas”?
...hat deals with making sure all of that stays consistent.
Here's a chapter from the "Git Internals" section of the Pro Git book, which is available online, that talks about this.
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How to access a preexisting collection with Mongoose?
...get access to it with mongoose I did mongoose.connect("mongodb://localhost/fromlab"); var Schema = mongoose.Schema; var User = mongoose.model("User", new Schema({}), "users"); User.find({}, function(err, doc){ console.log((doc)) })
– jack blank
Sep 21 '1...