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How do I get the object if it exists, or None if it does not exist?
... go = None
What I did do, is to subclass models.Manager, create a safe_get like the code above and use that manager for my models. That way you can write: SomeModel.objects.safe_get(foo='bar').
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How do I make a Git commit in the past?
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The advice you were given is flawed. Unconditionally setting GIT_AUTHOR_DATE in an --env-filter would rewrite the date of every commit. Also, it would be unusual to use git commit inside --index-filter.
You are dealing with multiple, independent problems here.
Specifying Dates Other Tha...
Why doesn't the height of a container element increase if it contains floated elements?
...nstead.
Also if you might like to self-clear an element you can use
.self_clear:after {
content: "";
clear: both;
display: table;
}
How Does CSS Float Work?
What is float exactly and what does it do?
The float property is misunderstood by most beginners. Well, what exactly does float ...
How to make an HTML back link?
...benefit of covering the case that the referring page opened with a target="_blank" attribute on the link, which history.go(-1) does not.
– Chris Krycho
Dec 5 '12 at 3:52
4
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When to use generic methods and when to use wild-card?
...dited Feb 13 '17 at 10:13
diyoda_
4,83066 gold badges4747 silver badges8686 bronze badges
answered Aug 11 '13 at 21:21
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Need to ZIP an entire directory using Node.js
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I ended up using archiver lib. Works great.
Example
var file_system = require('fs');
var archiver = require('archiver');
var output = file_system.createWriteStream('target.zip');
var archive = archiver('zip');
output.on('close', function () {
console.log(archive.pointer() + ' to...
Nokogiri installation fails -libxml2 is missing
...c OS X (Mavericks), installing the libraries with brew and setting NOKOGIRI_USE_SYSTEM_LIBRARIES=1 before installing the gem did the trick for me.
Summarising:
If previously installed, uninstall the gem:
gem uninstall nokogiri
Use Homebrew to install libxml2, libxslt and libiconv:
brew ins...
Is there any algorithm in c# to singularize - pluralize a word?
...ly works like this:
var target = new Pluralizer();
var str = "There {is} {_} {person}.";
var single = target.Pluralize(str, 1);
Assert.AreEqual("There is 1 person.", single);
// Or use the singleton if you're feeling dirty:
var several = Pluralizer.Instance.Pluralize(str, 47);
Assert.AreEqual("Th...
How to get client's IP address using JavaScript?
...rns:
fl=4f422
h=www.cloudflare.com
ip=54.193.27.106
ts=1575967108.245
visit_scheme=https
uag=Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36 Hypothesis-Via
colo=SJC
http=http/1.1
loc=US
tls=TLSv1.3
sni=plaintext
warp=off
Limitation...
Why should I use a pointer rather than the object itself?
...inters?
The important take-home message is that you should always use the appropriate tool for the job. In almost all situations, there is something more appropriate and safer than performing manual dynamic allocation and/or using raw pointers.
Dynamic allocation
In your question, you've demonstr...