Before we get our hands dirty with code, I feel it is necessary to understand how data is stored in firebase. Unlike relational databases, firebase stores data in JSON format. Think of each row in a relational database as a JSON object (which is basically unordered key-value pair). So the column nam...
Adding the aurelia-configuration to a cli application sometimes produces a build error. This is caused by a missing dependency so we simply add the dependency to the build bundle.
Try the following:
npm install deep-extend --save
npm install aurelia-configuration --save
Now add the followi...
Since Proxy contains no runtime information, there is never a need to pattern-match on the Proxy constructor. So a common idiom is to abstract over the Proxy datatype using a type variable.
showread :: forall proxy a. (Show a, Read a) => proxy a -> String -> String
showread _ = (show :: a...
Go to File > Settings > Keymap and select the Keymaps option from:
Mac OS X
Emacs
Visual Studio
Eclise
Netbeans
Jbuilder
and others, to map the shortcuts to the wanted tool ones.
You can declare functions that serve as type guards using any logic you'd like.
They take the form:
function functionName(variableName: any): variableName is DesiredType {
// body that returns boolean
}
If the function returns true, TypeScript will narrow the type to DesiredType in any bl...
To compare the difference of two dates, we can do the comparison based on the timestamp.
var date1 = new Date();
var date2 = new Date(date1.valueOf() + 5000);
var dateDiff = date1.valueOf() - date2.valueOf();
var dateDiffInYears = dateDiff/1000/60/60/24/365; //convert milliseconds into years
...
# imports
import weka.classifiers.trees.J48 as J48
import weka.core.converters.ConverterUtils.DataSource as DS
import os
# load training data
data = DS.read(os.environ.get("MOOC_DATA") + os.sep + "anneal_train.arff")
data.setClassIndex(data.numAttributes() - 1)
# confi...
# imports
import weka.classifiers.bayes.BayesNet as BayesNet
import weka.core.converters.ConverterUtils.DataSource as DS
import weka.gui.graphvisualizer.GraphVisualizer as GraphVisualizer
import javax.swing.JFrame as JFrame
import os
# load data
data = DS.read(os.environ.get("MOOC_DATA...
Sometimes we don't want to load the entire XML file in order to get the information we need. In these instances, being able to incrementally load the relevant sections and then delete them when we are finished is useful. With the iterparse function you can edit the element tree that is stored while ...
add the following function into .bash_profile, save and exit
function wekaflstart() {
export R_HOME=/Library/Frameworks/R.framework/Resources
java -Xss10M -Xmx4096M -cp :weka.jar weka.gui.knowledgeflow.KnowledgeFlow "$1"
}
inside a directory with a weka.jar file, open its termin...
This helper is loaded using the following code:
$this->load->helper('array');
The following functions are available:
element()
Lets you fetch an item from an array. The function tests whether the array index is set and whether it has a value. If a value exists it is returned. If a value ...
1. Go to File --> Settings (e.g. Ctrl+Alt+S ).
2. In the left-hand pane, select Plugins.
3.On the Plugins window, click "Install JetBrains plugin" or the "Browse repositories button".
1. Go to File --> Settings (e.g. Ctrl+Alt+S ).
2. In the left-hand pane, select Plugins.
3. On the Plugins window, click "Install plugin from disk button".
4. Select the desired plugin from your local machine.
Click Apply button of the Settings/Preferences dialog.
O...
DIO streams are currently not recognized by the Event extension. There is no clean way to obtain the file descriptor encapsulated into the DIO resource. But there is a workaround:
open stream for the port with fopen();
make the stream non-blocking with stream_set_blocking();
obtain numeric file...
The cluster library contains the ruspini data - a standard set of data for illustrating cluster analysis.
library(cluster) ## to get the ruspini data
plot(ruspini, asp=1, pch=20) ## take a look at the data
hclust expects a distance matrix, not the original data. We ...
Let
df = pd.DataFrame({'col_1':['A','B','A','B','C'], 'col_2':[3,4,3,5,6]})
df
# Output:
# col_1 col_2
# 0 A 3
# 1 B 4
# 2 A 3
# 3 B 5
# 4 C 6
To get the distinct values in col_1 you can use Series.unique()
df['col_1'].unique()
# Output:
...
JSX is not meant to be interpreted by the browser. It must be first transpiled into standard Javascript. To use JSX you need to install the plugin for babel babel-plugin-transform-vue-JSX
Run the Command below:
npm install babel-plugin-syntax-jsx babel-plugin-transform-vue-jsx babel-helper-vue-jsx...
