Tutorial by Examples: c

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...

This error message may be produced by the OpenSSH ssh client. It means that the TCP connection between the client and the server was abnormally closed by the server immediately after being accepted. Common reasons for this message include: The SSH server process is malfunctioning--for example, it...

This error message may be produced by the OpenSSH ssh client. It means that the TCP connection between the client and the server was closed by the server immediately after being accepted. This message generally indicates the SSH server has been configured not to accept connections from the client fo...

$ rails g job user_unsubscribe

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 ...

There is no imshow in the java, you need to write a method for this. This method is a Mat2bufferedImage. Takes mat object as parameter and returns image. public static void main(String[] args) { Mat frame = new Mat(); //0; default video device id VideoCapture camera = new VideoCaptur...

1)In project.json, add below dependencies- "Serilog": "2.2.0", "Serilog.Extensions.Logging": "1.2.0", "Serilog.Sinks.RollingFile": "2.0.0", "Serilog.Sinks.File": "3.0.0" 2)In Startup.cs, add below lines in constru...

A Functor is defined in category theory as a structure-preserving map (a 'homomorphism') between categories. Specifically, (all) objects are mapped to objects, and (all) arrows are mapped to arrows, such that the category laws are preserved. The category in which objects are Haskell types and morph...

class ObserverMock implements Observer<any> { closed?: boolean = false; // inherited from Observer nextVal: any = ''; // variable I made up constructor() {} next = (value: any): void => { this.nextVal = value; }; error = (err: any): void => { console.error(err); }; ...

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To set the timezone in Codeigniter by extending date helper is an alternative way. For doing that need to follow the following two step activity. Extend date helper with the following function: if ( ! function_exists('now')) { /** * Get "now" time * * Returns tim...

simpleCLI go to simpleCLI, enter the following code java weka.classifiers.rules.ZeroR -t path/to/a-file-of-dataset Jython Example codes from Advanced Weka MOOC course lesson 5.1 # imports import weka.core.converters.ConverterUtils.DataSource as DS import weka.filters.Filter as Filter impor...

# imports import weka.core.converters.ConverterUtils.DataSource as DS import weka.classifiers.trees.J48 as J48 import os # load data data = DS.read(os.environ.get("MOOC_DATA") + os.sep + "anneal.arff") data.setClassIndex(data.numAttributes() - 1) # configure classifier...

# imports import weka.core.converters.ConverterUtils.DataSource as DS import weka.classifiers.Evaluation as Evaluation import weka.classifiers.trees.J48 as J48 import java.util.Random as Random import os # load data data = DS.read(os.environ.get("MOOC_DATA") + os.sep + "annea...

# 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...

# Note: install jfreechartOffscreenRenderer package as well for JFreeChart library # imports import weka.classifiers.Evaluation as Evaluation import weka.classifiers.functions.LinearRegression as LinearRegression import weka.core.converters.ConverterUtils.DataSource as DS import java.util.Ran...

A controlled component is bound to a value and its changes get handled in code using event based callbacks. class CustomForm extends React.Component { constructor() { super(); this.state = { person: { firstName: '', lastName: '' } } } ...

z1 = zeros(5); % Create a 5-by-5 matrix of zeroes z2 = zeros(2,3); % Create a 2-by-3 matrix

o1 = ones(5); % Create a 5-by-5 matrix of ones o2 = ones(1,3); % Create a 1-by-3 matrix / vector of size 3

i1 = eye(3); % Create a 3-by-3 identity matrix i2 = eye(5,6); % Create a 5-by-6 identity matrix