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How do I delete rows in a data frame?
...s that you wanted to delete. However, at some later point, you go into the raw data and have a look around and reorder the data. Your row deletion code will now delete the wrong rows, and worse, you are unlikely to get any errors warning you that this has occurred.
Better strategy
A better strateg...
How do I do a bulk insert in mySQL using node.js
...
This is a fast "raw-copy-paste" snipped to push a file column in mysql with node.js >= 11
250k row in few seconds
'use strict';
const mysql = require('promise-mysql');
const fs = require('fs');
const readline = require('readline');
as...
Python str vs unicode types
... byte. Text can be encoded in a specific encoding to represent the text as raw bytes(e.g. utf-8, latin-1...).
Note that unicode is not encoded! The internal representation used by python is an implementation detail, and you shouldn't care about it as long as it is able to represent the code points ...
Sass combining parent using ampersand (&) with type selectors
...;.class { ... } } so why shouldn't you be able to do the same thing with a raw html element. Just because there was no way to do it as of the time OP posted doesn't mean he was incorrect to want the functionality to actually do it.
– Mike Mellor
Oct 3 '17 at 14...
How to pull a random record using Django's ORM?
...ust one query (assuming Postgres):
random_instance_or_none = Model.objects.raw('''
select * from {0} limit 1
offset floor(random() * (select count(*) from {0}))
'''.format(Model._meta.db_table)).first()
Be aware that this will raise an index error if the table is empty. Write yourself a mod...
Copy a file in a sane, safe and efficient way
...eate bare std::filebuf instances when no actual formatting is needed.
For raw performance, you can't beat POSIX file descriptors. It's ugly but portable and fast on any platform.
The Linux way appears to be incredibly fast — perhaps the OS let the function return before I/O was finished? In any ...
Is there a link to GitHub for downloading a file in the latest release of a repository?
... https://api.github.com/repos/porjo/staticserve/releases/latest | \
jq --raw-output '.assets[0] | .browser_download_url'
share
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How can I use Guzzle to send a POST request in JSON?
...
For Guzzle <= 4:
It's a raw post request so putting the JSON in the body solved the problem
$request = $this->client->post(
$url,
[
'content-type' => 'application/json'
],
);
$request->setBody($data); #set body!
$resp...
How do I view the SQL generated by the Entity Framework?
...r example:
- Queries, including normal LINQ queries, eSQL queries, and raw queries from methods such as SqlQuery.
- Inserts, updates, and deletes generated as part of SaveChanges
- Relationship loading queries such as those generated by lazy loading
- Parameters
- Whether or not the co...
Getting the SQL from a Django QuerySet [duplicate]
...cepted answer did not work for me when using Django 1.4.4. Instead of the raw query, a reference to the Query object was returned: <django.db.models.sql.query.Query object at 0x10a4acd90>.
The following returned the query:
>>> queryset = MyModel.objects.all()
>>> queryset...