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How to get the last N rows of a pandas DataFrame?
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This is because of using integer indices (ix selects those by label over -3 rather than position, and this is by design: see integer indexing in pandas "gotchas"*).
*In newer versions of pandas prefer loc or iloc to remove the ambiguity of ix as position or label:
df....
What's a good way to overwrite DateTime.Now during testing?
...t by right clicking on the assembly you want to create Fakes/Shims for and selecting "Add Fakes Assembly"
Finally, Here is what the test class would look like:
using System;
using ConsoleApplication11;
using Microsoft.QualityTools.Testing.Fakes;
using Microsoft.VisualStudio.TestTools.UnitTestin...
How do I pass multiple parameters into a function in PowerShell?
...est-Path $_ -PathType 'Leaf' })]
[ValidateScript({ (Get-Item $_ | select -Expand Extension) -eq ".csv" })]
[string] $Path
)
}
In this example, we are assured not only that $Path exists, but that it is a file, (as opposed to a directory) and has a .csv extension. ($_ refers to...
SQLAlchemy: how to filter date field?
... db.func.date(Chance.apply_time)>=start).count()
it is equal to:
select
count(id)
from
Chance
where
repo_id=:repo_id
and status='1'
and date(apple_time) <= end
and date(apple_time) >= start
wish can help you.
...
How can I parse a string with a comma thousand separator to a number?
... I have no idea why this answer got so many upvotes and was selected as correct, it has two serious issues. 1. It cannot handle numbers with multiple commas, e.g. parseFloat("2,000,000.00".replace(',','')) returns 2000 and 2. it fails in many regions of the world where , is a decimal ...
Entity Framework: “Store update, insert, or delete statement affected an unexpected number of rows (
...ou're actually updating the data yourself in another method in-between the select and the update), but it could be simply a race condition between two applications.
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How to disable a particular checkstyle rule for a particular line of code?
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If you prefer to use annotations to selectively silence rules, this is now possible using the @SuppressWarnings annotation, starting with Checkstyle 5.7 (and supported by the Checkstyle Maven Plugin 2.12+).
First, in your checkstyle.xml, add the SuppressWarnin...
Css pseudo classes input:not(disabled)not:[type=“submit”]:focus
...and you seem to have mixed up/missing colons and parentheses on the :not() selector.
Demo: http://jsfiddle.net/HSKPx/
One thing to note: I may be wrong, but I don't think disabled inputs can normally receive focus, so that part may be redundant.
Alternatively, use :enabled
input:enabled:not([typ...
How do I configure Notepad++ to use spaces instead of tabs?
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Go to the Preferences menu command under menu Settings, and select Language Menu/Tab Settings, depending on your version. Earlier versions use Tab Settings. Later versions use Language. Click the Replace with space check box. Set the size to 4.
See documentation: http://docs.notepa...
How will I know when to create an interface?
...oreach-type pattern", you can define complex behaviors (Count, Max, Where, Select, etc.) for any enumerable type.
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