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How do you install Boost on MacOS?
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Download MacPorts, and run the following command:
sudo port install boost
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Multiple linear regression in Python
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Here is a little work around that I created. I checked it with R and it works correct.
import numpy as np
import statsmodels.api as sm
y = [1,2,3,4,3,4,5,4,5,5,4,5,4,5,4,5,6,5,4,5,4,3,4]
x = [
[4,2,3,4,5,4,5,6,7,4,8,9,8,8,6,6,5,5,5,5,5,5,5],
[4,1,2,3,4,5,6,7,5,8,7,8,7,8,7,8,7,...
What does “fragment” mean in ANTLR?
...is somewhat akin to an inline function: It makes the grammar more readable and easier to maintain.
A fragment will never be counted as a token, it only serves to simplify a grammar.
Consider:
NUMBER: DIGITS | OCTAL_DIGITS | HEX_DIGITS;
fragment DIGITS: '1'..'9' '0'..'9'*;
fragment OCTAL_DIGITS: '...
What is the easiest way to ignore a JPA field during persistence?
... edited Dec 20 '13 at 7:14
Andrey Atapin
6,69433 gold badges2525 silver badges3434 bronze badges
answered Aug 15 '09 at 13:56
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Skip callbacks on Factory Girl and Rspec
...efault should be that when I create an object the callbacks are triggered, and I should use a different parameter for the exceptional case. so FactoryGirl.create(:user) should create the user triggering the callbacks, and FactoryGirl.create(:user_without_callbacks) should create the user without th...
Regex to Match Symbols: !$%^&*()_+|~-=`{}[]:";'?,./
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/[$-/:-?{-~!"^_`\[\]]/
There are three ranges. '$' to '/', ':' to '?', and '{' to '~'. the last string of characters can't be represented more simply with a range: !"^_`[].
Use an ACSII table to find ranges for character classes.
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Android SDK manager won't open
So I installed the android sdk for Windows:
29 Answers
29
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Relational Database Design Patterns? [closed]
...lated to object oriented design.
Are there design patterns for creating and programming relational databases?
Many problems surely must have reusable solutions.
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Replacing NAs with latest non-NA value
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@BallpointBen 's comment is important and should be included in the answer. Thanks!
– Ben
Mar 6 at 16:43
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Applying a function to every row of a table using dplyr?
...it useful to use adply for scalar functions that I have to apply to each and every row.
7 Answers
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