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What are type lambdas in Scala and what are their benefits?
..., another concrete type. Give List a String and it gives you List[String]. Etc.
So, List, Option can be considered to be type level functions of arity 1. Formally we say, they have a kind * -> *. The asterisk denotes a type.
Now Tuple2[_, _] is a type constructor with kind (*, *) -> * i.e. y...
How do I force Postgres to use a particular index?
...what qualifies for a small table? Is it something like 5000 rows, or 50000 etc?
– waffl
Jul 22 '14 at 8:46
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Checkout one file from Subversion
...py, that contains meta-information about repository, revision, attributes, etc. That metadata is stored in subdirectories named '.svn'. And single files don't have subdirectories.
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Detecting a redirect in ajax request?
...also may break down if the url gets munged (due to quoting/encoding issues etc) during the round trip... but for 99% of cases, this seems to get the job done.
On the server side, my specific case was a python application using the Pyramid web framework, and I used the following snippet:
import p...
Read a zipped file as a pandas DataFrame
...v('filename.zip')
(Of course you will need to specify separator, header, etc. if they are different from the defaults.)
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django.core.exceptions.ImproperlyConfigured: Error loading MySQLdb module: No module named MySQLdb
...lso should be same architecture) and already tried everything like pip and etc. In order fix this problem do following steps:
Download MySql for Python from here
Untar downloaded file. In terminal window do following: tar xvfz downloade.tar.
cd /to untared directory
Run sudo python setup.py instal...
How do you make a HTTP request with C++?
...why did you put what you did in the send buffer (e.g. GET / HTTP/1.1.1/... etc)? How do I find out how to format what I send?
– LazerSharks
Sep 8 '14 at 0:27
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NSInvocation for Dummies?
...So your first argument gets placed at index 2, second argument at index 3, etc...
– Dave
Jul 11 '10 at 20:47
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When to use IMG vs. CSS background-image?
...for multiple overlay images in IE6.
Use IMG with a z-index in order
to stretch a background image to fill its entire window.Note, this is no longer true with CSS3 background-size; see #6 below.
Using img instead of background-image can dramatically improve performance of animations over a backgroun...
How to remove a field from params[:something]
...he params hash is a very BAD IDEA. confuses people easily during debugging etc... use a custom hash that you pass to assign attributes, e.g. use assin_params = params.dup.delete(:company). never delete from params directly
– Dominik Goltermann
Nov 8 '13 at 10:4...