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How to split data into training/testing sets using sample function
...row(mtcars))
## set the seed to make your partition reproducible
set.seed(123)
train_ind <- sample(seq_len(nrow(mtcars)), size = smp_size)
train <- mtcars[train_ind, ]
test <- mtcars[-train_ind, ]
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Test PHP headers with PHPUnit
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The issue is that PHPUnit will print a header to the screen and at that point you can't add mo...
Can you delete multiple branches in one command with Git?
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You can use git branch --list to list the eligible branches, and use git branch -D/-d to remov...
Could not load file or assembly 'System.Data.SQLite'
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System.Data.SQLite.dll is a mixed assembly, i.e. it contains both managed code and native code...
Does Java have a path joining method? [duplicate]
...but speed for something like this is a secondary concern, especially for a site that many people who just want to know how to do the right way are concerned. * Re implements existing Java libraries functionality * Enforces OS specific path conventions (could have been argument inject-able with de...
What is the purpose of global.asax in asp.net
...out having to try and shoe-horn that code into each and every page of your site.
You can use it by by choosing Add > New Item > Global Application Class in Visual Studio. Once you've added the file, you can add code under any of the events that are listed (and created by default, at least in ...
How do I simulate a hover with a touch in touch enabled browsers?
...htly and adding some JS.
Using jQuery to make it easy:
$(document).ready(function() {
$('.hover').on('touchstart touchend', function(e) {
e.preventDefault();
$(this).toggleClass('hover_effect');
});
});
In english: when you start or end a touch, turn the class hover_effec...
Python OpenCV2 (cv2) wrapper to get image size?
... readability, or don't want to bother typing this, you can wrap it up in a function, and give it a name you like, e.g. cv_size:
import numpy as np
import cv2
# ...
def cv_size(img):
return tuple(img.shape[1::-1])
If you're on a terminal / ipython, you can also express it with a lambda:
>...
Converting a string to int in Groovy
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Several ways to do it, this one's my favorite:
def number = '123' as int
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Which is faster : if (bool) or if(int)?
... (specifically -O3), here's what I get:
For f():
.type _Z1fi, @function
_Z1fi:
.LFB0:
.cfi_startproc
.cfi_personality 0x3,__gxx_personality_v0
cmpl $1, %edi
sbbl %eax, %eax
andb $58, %al
addl $99, %eax
ret
.cfi_e...