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Easy way to prevent Heroku idling?
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As an alternative to Pingdom I suggest trying Uptimerobot. It is free and offers 5 min interval site checking. It works very fine for me.
UPDATE 7th of May 2015: This will not be possible any more, as Heroku will change their free dyno to prevent keeping it alive for full...
Converting an int to a binary string representation in Java?
What would be the best way (ideally, simplest) to convert an int to a binary string representation in Java?
16 Answers
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Converting strings to floats in a DataFrame
How to covert a DataFrame column containing strings and NaN values to floats. And there is another column whose values are strings and floats; how to convert this entire column to floats.
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Adding 'serial' to existing column in Postgres
...Great answer, but keep in mind coalesce(max(a), 0)) won't work most of the time, since Ids usually start from 1. More correct way would be coalesce(max(a), 1))
– Amiko
May 28 '19 at 18:11
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Copy file or directories recursively in Python
...dst_file)
shutil.copy(src_file, dst_dir)
Should it be your first time and you have no idea how to copy files and folders recursively, I hope this helps.
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How can I remove the extension of a filename in a shell script?
What's wrong with the following code?
12 Answers
12
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Validating with an XML schema in Python
...e more than one file, there is no need to create an XMLSchema object every time, therefore:
validator.py
from lxml import etree
class Validator:
def __init__(self, xsd_path: str):
xmlschema_doc = etree.parse(xsd_path)
self.xmlschema = etree.XMLSchema(xmlschema_doc)
def v...
jQuery event to trigger action when a div is made visible
...d to the original .show() method so you don't have to trigger events every time you show something or if you need it to work with legacy code:
Jquery extension:
jQuery(function($) {
var _oldShow = $.fn.show;
$.fn.show = function(speed, oldCallback) {
return $(this).each(function() {
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Cannot resolve the collation conflict between “SQL_Latin1_General_CP1_CI_AS” and “Latin1_General_CI_
...E DATABASE_DEFAULT = otherfieldname COLLATE DATABASE_DEFAULT
Works every time. :)
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How can I set the default value for an HTML element?
... that difficult to write selected="selected"? I mean, what are you saving? Time? Size? It's negligible and if it makes the code more "compliant", why not doing it?
– xDaizu
Feb 15 '16 at 9:41
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