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Parse rfc3339 date strings in Python? [duplicate]
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You should have a look at moment which is a python port of the excellent js lib momentjs.
One advantage of it is the support of ISO 8601 strings formats, as well as a generic "% format" :
import moment
time_string='2012-10-09T19:00:55Z'
m = moment.date(time_string, '%Y-%m-%dT%H:%M:%S...
What is polymorphism, what is it for, and how is it used?
...sing an object (like an import file) and then determining what type it is (Excel, CSV, YAML, SQL, etc. etc.). To do this one would need some sort of factory class for Class_Excel, Class_CSV to be called, or have a Reader class called. Either way, some sort of iterative if/then/else is going to hav...
How to parse a CSV file in Bash?
...to *nix tools is to convert them to TSV (tab-separated values), e.g. using Excel.
– peak
Sep 7 '15 at 3:27
It is inter...
Why would introducing useless MOV instructions speed up a tight loop in x86_64 assembly?
...derstand how branch mispredictions affect performance, take a look at this excellent answer: https://stackoverflow.com/a/11227902/1001643
Compilers typically don't have enough information to know which branches will alias and whether those aliases will be significant. However, that information ca...
Writing your own STL Container
...the C++11 standard is freely available here.
You might as well, read some excellent books which will help you understand the requirements from an perspective of user of the container. Two excellent books which struck my mind easily are:
Effective STL by Scott Meyers &
The C++ Standard Librar...
JavaScript hashmap equivalent
... use it as a key.
US state abbreviation + driver license number makes an excellent key.
Country abbreviation + passport number is an excellent key too.
Some function on fields, or a whole object, can return a unique value — use it as a key.
I used your suggestion and cached all objects using a...
Learning about LINQ [closed]
...ning LINQ) on Charlie Calvert's blog: Links to LINQ.
And also there is an excellent series of blog posts by Matt Warren on how to create your own LINQ Provider: LINQ: Building an IQueryable provider series
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MySQL combine two columns into one column
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Works for T-SQL as well, excellent and simple solution. Reduces two columns into one.
– Ryan Battistone
Feb 15 '19 at 17:55
a...
What's the fundamental difference between MFC and ATL?
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+1 I wish I could +10 this. Thanks for the excellent history description -- it's very well-written and informative! :)
– user541686
Aug 27 '11 at 4:57
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Why is `[` better than `subset`?
...is question was answered in well in the comments by @James, pointing to an excellent explanation by Hadley Wickham of the dangers of subset (and functions like it) [here]. Go read it!
It's a somewhat long read, so it may be helpful to record here the example that Hadley uses that most directly addr...