Arrow functions will throw a TypeError when used with the new keyword.
const foo = function () {
return 'foo';
}
const a = new foo();
const bar = () => {
return 'bar';
}
const b = new bar(); // -> Uncaught TypeError: bar is not a constructor...
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:
...
###### Used for both Classification and Regression examples
library(randomForest)
library(car) ## For the Soils data
data(Soils)
######################################################
## RF Classification Example
set.seed(656) ## for ...
If you have a dataframe with missing data (NaN, pd.NaT, None) you can filter out incomplete rows
df = pd.DataFrame([[0,1,2,3],
[None,5,None,pd.NaT],
[8,None,10,None],
[11,12,13,pd.NaT]],columns=list('ABCD'))
df
# Output:
# A B ...
In barplot, factor-levels are placed on the x-axis and frequencies (or proportions) of various factor-levels are considered on the y-axis. For each factor-level one bar of uniform width with heights being proportional to factor level frequency (or proportion) is constructed.
The barplot() function...
Offset(Rows, Columns) - The operator used to statically reference another point from the current cell. Often used in loops. It should be understood that positive numbers in the rows section moves right, wheres as negatives move left. With the columns section positives move down and negatives move ...
The code below calculates the value of PI using a recursive approach. Modify the MAX_PARALLEL_RECURSIVE_LEVEL value to determine at which recursion depth stop creating tasks. With this approach to create parallelism out of recursive applications: the more tasks you create, the more parallel tasks cr...
`This way you will get the newest ruby but it has its downsides. Doing it like this ruby will not be managed by any application.
!! Remember to chagne the version so it coresponds with your !!
you need to download a tarball find a link on an official website (https://www.ruby-lang.org/en/downloa...
With Azure PowerShell you can get certain functionality currently unavailable on Azure Portal, like:
Reconfigure all Traffic Manager's endpoints at once
Address other services via Azure ResourceId instead of domain name, so you don't need to set Location manually for Azure Endpoints
Prerequis...
Autodoc needs to imports your modules to work.
You can include your code path in your conf.py file.
For instance:
import os
sys.path.insert(0, os.path.abspath('../src'))
Once a model is built predict is the main function to test with new data. Our example will use the mtcars built-in dataset to regress miles per gallon against displacement:
my_mdl <- lm(mpg ~ disp, data=mtcars)
my_mdl
Call:
lm(formula = mpg ~ disp, data = mtcars)
Coefficients:
(Intercep...
app.get("/",function(req,res){
response.render("index",{ //render the index when root(/) is requested
message:"rendered view with ejs"
});
});
ActionMailer
ActionPack
ActiveRecord
ActiveResource (ActiveWebService was replaced by ActiveResource, and with that, Rails moved from SOAP to REST by default)
ActiveSupport
Railties
You can use @Value("#{expression}") to inject value at runtime, in which the expression is a SpEL expression.
Literal expressions
Supported types include strings, dates, numeric values (int, real, and hex), boolean and null.
"#{'Hello World'}" //strings
"#{3.1415926}&qu...
Donald Knuth is often quoted as saying this:
"Programmers waste enormous amounts of time thinking about, or worrying about, the speed of noncritical parts of their programs, and these attempts at efficiency actually have a strong negative impact when debugging and maintenance are considered....
