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Find element's index in pandas Series
...e search value which is towards the end of the series.
Here are the speed tests on a 2013 MacBook Pro in Python 3.7 with Pandas version 0.25.3.
In [1]: import pandas as pd
In [2]: import numpy as np
...
Hibernate: hbm2ddl.auto=update in production?
...matic updates in production. Write your own patches, review them with DBA, test them, then apply them manually.
Theoretically, if hbm2ddl update worked in development, it should work in production too. But in reality, it's not always the case.
Even if it worked OK, it may be sub-optimal. DBAs are...
How to split a string in Haskell?
...ed Data.Text as T
main = print $ T.splitOn (T.pack " ") (T.pack "this is a test")
or:
{-# LANGUAGE OverloadedStrings #-}
import qualified Data.Text as T
main = print $ T.splitOn " " "this is a test"
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Reading CSV file and storing values into an array
...ic void Main(string[] args)
{
using(var reader = new StreamReader(@"C:\test.csv"))
{
List<string> listA = new List<string>();
List<string> listB = new List<string>();
while (!reader.EndOfStream)
{
var line = reader.ReadLine(...
How to overcome TypeError: unhashable type: 'list'
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@msh855 is there any size limit? I tested the dictionary with a tuple of size 100,000 and it worked fine for me (I'm using python 3.6)
– Sreram
Jan 9 at 17:19
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Spring @Transactional - isolation, propagation
...art in the same transaction.
We can easily verify the behaviour with a test and see how results differ with propagation levels:
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations="classpath:/fooService.xml")
public class FooServiceTests {
private @Autowired Transaction...
How to re-sign the ipa file?
... I would like to sign the IPA with an ad-hoc provisioning profile for beta testing, and then re-sign the exact IPA with an app submission provisioning profile for the app store.
...
Change text color based on brightness of the covered background area?
...B value.
Something like this: http://jsfiddle.net/2VTnZ/2/
var rgb = $('#test').css('backgroundColor');
var colors = rgb.match(/^rgb\((\d+),\s*(\d+),\s*(\d+)\)$/);
var brightness = 1;
var r = colors[1];
var g = colors[2];
var b = colors[3];
var ir = Math.floor((255-r)*brightness);
var ig = Math....
Inheriting class methods from modules / mixins in Ruby
...
module ClassMethods
def bar2
'bar2'
end
end
end
class Test
include Foo
end
Test.new.bar1 # => "bar1"
Test.bar2 # => "bar2"
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Remove blank lines with grep
...
I prefer using egrep, though in my test with a genuine file with blank line your approach worked fine (though without quotation marks in my test). This worked too:
egrep -v "^(\r?\n)?$" filename.txt
...