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How to make good reproducible pandas examples
...y don't link to an external source at all...)
df = pd.read_csv('my_secret_file.csv') # ideally with lots of parsing options
Most data is proprietary we get that: Make up similar data and see if you can reproduce the problem (something small).
don't explain the situation vaguely in words, like yo...
Git-Based Source Control in the Enterprise: Suggested Tools and Practices?
...merge things manually. For example, as soon as someone makes a commit to a file you're editing locally, it will be marked as a conflict that needs to be manually resolved; now that is a maintenance nightmare.
With git, most of the time there won't be any merge conflicts because git can actually merg...
How would you implement an LRU cache in Java?
...ason I don't always use a library is because I don't always want every war file to be 80MB, and I write libraries so I tend to make the libs plug-able with a good enough solution in place and someone can plug-in another cache provider if they like. :)
I never know when someone might need Guava or e...
SQL injection that gets around mysql_real_escape_string()
...ring literals are quoted using double-quote " characters.
This was filed as bug #72458 and has been fixed in MySQL v5.7.6 (see the section headed "The Saving Grace", below).
This is another, (perhaps less?) obscure EDGE CASE!!!
In homage to @ircmaxell's excellent answer (really, this is s...
Why would you use an ivar?
...becomes a problem to the whole process. And such a problem is nothing a profiler will easily show because a profiler is about finding critical hot spots, but none of these inefficiencies are hot spots on their own. The CPU time is just averagely spread among them, yet each of them only has such a ti...
Why does this loop produce “warning: iteration 3u invokes undefined behavior” and output more than 4
...ing the generated assembly code.
Here is the full assembly listing:
.file "a.cpp"
.section .text$_ZNKSt5ctypeIcE8do_widenEc,"x"
.linkonce discard
.align 2
LCOLDB0:
LHOTB0:
.align 2
.p2align 4,,15
.globl __ZNKSt5ctypeIcE8do_widenEc
.def __ZNKSt5ctypeIcE8do_w...
ReactJS Two components communicating
...he LeftPanel component.
To test it, just copy the code into two separated files and run the index.html. Then select a month and see how the number of days changes.
dates.js
/** @jsx React.DOM */
var monthsLength = [0,31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];
var MONTHS_ARR = ...
RegEx for matching UK Postcodes
...hat aren't covered fairly easily.
Royal Mail releases the Postcode Address File (PAF), this includes BFPO which I'm not sure Code-Point Open does. It's updated regularly but costs money (and they can be downright mean about it sometimes). PAF includes the full address rather than just postcodes and ...
C++11 introduced a standardized memory model. What does it mean? And how is it going to affect C++ p
...they got the link from Herb Sutter, posted as is, and he later removed the files; but that's just a speculation...).
– eran
Aug 30 '16 at 6:06
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...
A simple explanation of Naive Bayes Classification
...uy a computer.
The code below exactly answers that question.
Just create a file called named new_dataset.csv and paste the following content.
Age,Income,Student,Creadit_Rating,Buys_Computer
<=30,high,no,fair,no
<=30,high,no,excellent,no
31-40,high,no,fair,yes
>40,medium,no,fair,yes
>40,l...