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Python Sets vs Lists
...
Set wins due to near instant 'contains' checks: https://en.wikipedia.org/wiki/Hash_table
List implementation: usually an array, low level close to the metal good for iteration and random access by element index.
Set implementation: https://en.wikipedia.org/wiki/Hash_table,...
Adding git branch on the Bash command prompt
...t to display Git status:
Get git-prompt script:
curl -o ~/.git-prompt.sh https://raw.githubusercontent.com/git/git/master/contrib/completion/git-prompt.sh
And customize your prompt adding the following code in your .bashrc file:
# Load Git functions
source ~/.git-prompt.sh
# Syntactic sugar fo...
What's the “big idea” behind compojure routes?
...ted on clojure web stuff yet but, I will, here's the stuff I bookmarked.
https://docs.google.com/Doc?docid=0AQqGP1CDN0uIZGhmZjJmcGZfMjNjNHIycGZu&hl=en
https://github.com/weavejester/compojure/wiki/Routes-In-Detail
http://mmcgrana.github.com/2010/03/clojure-web-development-ring.html
...
Best practice to return errors in ASP.NET Web API
...I answered this question a few blog posts have been written on the topic:
https://weblogs.asp.net/fredriknormen/asp-net-web-api-exception-handling
(this one has some new features in the nightly builds)
https://docs.microsoft.com/archive/blogs/youssefm/error-handling-in-asp-net-webapi
Update 2
Up...
Remove URL parameters without refreshing page
... );
Results
The previous two lines of code will make a URL such as:
https://domain.tld/some/randome/url/which/will/be/deleted/
To become:
https://domain.tld/my-new-url.php
Action
Now let's try a different approach. Say you need to keep the file's name. The file name comes after the la...
Invoking JavaScript code in an iframe from the parent page
...c.com, and both are using same protocol i.e. both are either on http:// or https://.
The call will fail in below mentioned cases:
Parent page and the iframe page are from different domain.
They are using different protocols, one is on http:// and other is on https://.
Any workaround to this re...
MaterialDialog 对话框增强扩展 · App Inventor 2 中文网
...打开网页.Click() {
MaterialDialog1.CreateWebViewDialog("webDialog", "https://www.example.com", true, 1, "")
}
EvaluateJSInDialogWebView 在WebView中执行JS(dialogId,jsCode)
在 WebView 对话框中执行 JavaScript 代码。执行完成后触发 AfterEvaluation 事件并返回执行...
How do I perform the SQL Join equivalent in MongoDB?
...o the aggregation pipeline is essentially identical to a left outer join:
https://docs.mongodb.org/master/reference/operator/aggregation/lookup/#pipe._S_lookup
From the docs:
{
$lookup:
{
from: <collection to join>,
localField: <field from the input documents>,
...
Does JSON syntax allow duplicate keys in an object?
...
There are 2 documents specifying the JSON format:
http://json.org/
https://tools.ietf.org/html/rfc7159
The accepted answer quotes from the 1st document. I think the 1st document is more clear, but the 2nd contains more detail.
The 2nd document says:
Objects
An object structur...
Test a weekly cron job [closed]
...g unexpected and cause breakage until the bugs are sorted out. (See also: https://stackoverflow.com/a/17805088/237059 )
A general approach to this problem is helpful to have.
One of my favorite techniques is to use a script I wrote called 'crontest'. It launches the target command inside a GNU s...