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pandas read_csv and filter columns with usecols
...ter reading.
This solution corrects those oddities:
import pandas as pd
from StringIO import StringIO
csv = r"""dummy,date,loc,x
bar,20090101,a,1
bar,20090102,a,3
bar,20090103,a,5
bar,20090101,b,1
bar,20090102,b,3
bar,20090103,b,5"""
df = pd.read_csv(StringIO(csv),
header=0,
ind...
rails - Devise - Handling - devise_error_messages
...::Error
It also appears to be defined in a higher scope (probably coming from the controller), so it can be accessed in a variety of places.
Anywhere in your Helper
module DeviseHelper
def devise_error_messages1!
resource.errors.full_messages.map { |msg| content_tag(:li, msg) }.join
end
...
What is global::?
...same name in any namespace. If you were to create an instance of the class from within another namespace whereby you defined another meaning for Foo, it would take the most local scoped. See the edit
– chrisw
Feb 22 '13 at 11:19
...
Is it possible to use “/” in a filename?
... ASCII 0x2F. ASCII is a big no-no since at least 20 years. (Unicode 1.0 is from 1991!)
– Evi1M4chine
Jun 5 '16 at 9:30
...
Multi-line EditText with Done action button
...
From the android documentation: '"textMultiLine"
Normal text keyboard that allow users to input long strings of text that include line breaks (carriage returns).' Therefore the textMultiLine attribute is not appropriate i...
How to master AngularJS? [closed]
...app
Angular-UI - Must use components for any UI development
UI-Bootstrap - From-scratch JS re-implementations of bootstrap
components as AngularJS directives
Full-Spectrum Testing with AngularJS and Karma
Bonus - Data binding in AngularJS, explained by Misko Hevery himself.
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What's the difference between emulation and simulation? [duplicate]
...fically, an emulator attempts to duplicate the entire behavior of a device from an external viewpoint. It may or may not need to duplicate the inner workings of a device to accomplish that. A simulation attempts to duplicate a specific subset of a device's behavior.
– Jay Elsto...
How do I convert a git repository to mercurial?
...using TortoiseHg, it can be enabled by using the Global Settings menu item from the TortoiseHg shell extension menu in the Extensions section under Global Settings.
– Umar Farooq Khawaja
May 2 '14 at 12:22
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PHP code to remove everything but numbers
I'm trying to remove everything from a string but just numbers (0-9).
4 Answers
4
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What is the difference between '/' and '//' when used for division?
... in the 2.x line, there is no difference for integers unless you perform a from __future__ import division, which causes Python 2.x to adopt the 3.x behavior.
Regardless of the future import, 5.0 // 2 will return 2.0 since that's the floor division result of the operation.
You can find a detailed ...