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In Django - Model Inheritance - Does it allow you to override a parent model's attribute?
...No, it is not:
Field name “hiding” is not permitted
In normal Python class inheritance, it is permissible for a child
class to override any attribute from the parent class. In Django, this
is not permitted for attributes that are Field instances (at least,
not at the moment). If a...
How can I access the MySQL command line with XAMPP for Windows?
...
For Linux:
/opt/lampp/bin/mysql -u root -p
To use just 'mysql -u root -p' command then add '/opt/lampp/bin' to the PATH of the environment variables.
...
How do I find a “gap” in running counter with SQL?
...g and the end of every gap. I understand that I might have to write my own python script that leverages SQL (in my case MySql), but it would be nice if SQL could get me closer to what I want (I have a table with 2 million rows that has gaps, so I will need to slice it into smaller pieces and run som...
mongodb: insert if not exists
...key2':'value2', 'key3':'value3'};
coll.update(key, data, upsert=True); #In python upsert must be passed as a keyword argument
This replaces your if-find-else-update block entirely. It will insert if the key doesn't exist and will update if it does.
Before:
{"key":"value", "key2":"Ohai."}
Afte...
What are the key differences between Scala and Groovy? [closed]
...java at times. However the use case for Groovy is similar to using Ruby / Python - its for an easy to use dynamically typed scripting language where performance is typically not that much of an issue. e.g. many Groovy frameworks contain a ton of Java code for performance (like Grails)
...
Best way to include CSS? Why use @import?
...erarchy, you should do the thing that makes the most logical sense to do.
Python uses import; C uses include; JavaScript has require. CSS has import; when you need it, use it!
2. Once you get to the point where the site needs to scale, concatenate all the CSS.
Multiple CSS requests of any kind - ...
What are the uses of the exec command in shell scripts? [closed]
...er use I found quite handy and worth mentioning here because it relates to python web applications and seems something in between your (awesome) answers 2 and 3. I usually run wsgi web apps (say django or flask) through supervisor calling a gunicorn app: the latter notoriously requiring quite a few ...
Definition of “downstream” and “upstream”
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@SebNag something like this? linuxacademy.com/blog/linux/git-terms-explained
– reggaeguitar
Sep 21 '18 at 22:22
1
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When should I use mmap for file access?
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In addition to other nice answers, a quote from Linux system programming written by Google's expert Robert Love:
Advantages of mmap( )
Manipulating files via mmap( ) has a handful of advantages over the
standard read( ) and write( ) system calls. Among them are:...
HTTP GET Request in Node.js Express
... will serve you well if you need to use an HTTP client on Ruby, PHP, Java, Python, Objective C, .Net or Windows 8 as well. As far as I can tell the unirest libraries are mostly backed by existing HTTP clients (e.g. on Java, the Apache HTTP client, on Node, Mikeal's Request libary) - Unirest just pu...