Tutorial by Examples: d

Because a clack request is represented as a plist, we can use pattern matching as the entry point to the clack app as a way to route request to their appropriate controllers (defvar *app* (lambda (env) (match env ((plist :request-method :get :request-uri uri) (...

Using pattern matching one can intertwine function definition and pattern matching, similar to SML. (trivia:defun-match fib (index) "Return the corresponding term for INDEX." (0 1) (1 1) (index (+ (fib (1- index)) (fib (- index 2))))) (fib 5) ;; => 8

Rails is shipped by default with ActiveRecord, an ORM (Object Relational Mapping) derived from the pattern with the same name. As an ORM, it is built to handle relational-mapping, and more precisely by handling SQL requests for you, hence the limitation to SQL databases only. However, you can stil...

This is a sample adapter code. public class SampleAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> { private static final int FOOTER_VIEW = 1; // Define a view holder for Footer view public class FooterViewHolder extends ViewHolder { public FooterViewHolder(View ite...

If your project doesn't have README.md, GitHub may parse README.rdoc to display details. If it has both, it will use README.md, silently ignoring rdoc. A README file may include- Project Title Describe briefly about your project. You may also provide project's website link, badges, community ...

Content has been moved back to good 'ol Servlets wiki page

Content has been moved back to good 'ol Servlets wiki page

Content has been moved back to good 'ol Servlets wiki page

To add a method to a button, first create an action method: Objective-C -(void) someButtonAction{ NSLog(@"Button is tapped"); } Swift func someButtonAction() { print("Button is tapped") } Now to add this action method to your button, you have to wri...

from scipy.sparse import csr_matrix A = csr_matrix([[1,0,2],[0,3,0]]) >>>A <2x3 sparse matrix of type '<type 'numpy.int64'>' with 3 stored elements in Compressed Sparse Row format> >>> A.todense() matrix([[1, 0, 2], [0, 3, 0]]) >>&g...

Sometimes it is necessary or desirable to place the legend outside the plot. The following code shows how to do it. import matplotlib.pylab as plt fig, ax = plt.subplots(1, 1, figsize=(10,6)) # make the figure with the size 10 x 6 inches fig.suptitle('Example of a Legend Being Placed Outside of...

Fired when the component or directive instance is destroyed. import { Component, OnDestroy } from '@angular/core'; @Component({ selector: 'so-ondestroy-component', templateUrl: 'ondestroy-component.html', styleUrls: ['ondestroy-component.'] }) class OnDestroyComponent implements...

Fire after the view has been fully initialized. (Only available for components) import { Component, AfterContentChecked } from '@angular/core'; @Component({ selector: 'so-aftercontentchecked-component', templateUrl: 'aftercontentchecked-component.html', styleUrls: ['aftercontentc...

Fire after the check of the view, of the component, has finished. (Only available for components) import { Component, AfterViewChecked } from '@angular/core'; @Component({ selector: 'so-afterviewchecked-component', templateUrl: 'afterviewchecked-component.html', styleUrls: ['afte...

Allows to listen for changes only on specified properties import { Component, DoCheck, Input } from '@angular/core'; @Component({ selector: 'so-docheck-component', templateUrl: 'docheck-component.html', styleUrls: ['docheck-component.'] }) class DoCheckComponent implements DoChe...

CREATE TRIGGER BooksDeleteTrigger ON MyBooksDB.Books AFTER DELETE AS INSERT INTO BooksRecycleBin SELECT * FROM deleted; GO

(in-package #:asdf-user) (defsystem #:foo :components ((:file "foo")) :in-order-to ((asdf:test-op (asdf:load-op :foo))) :perform (asdf:test-op (o c) (uiop:symbol-call :foo-tests 'run-tests))) (defsystem #:foo-tests :name "foo-test" :compo...

ASDF provides the package ASDF-USER for developers to define their packages in.

Background ============ WebStorm is lightweight yet powerful Integrated Development Environment (IDE) perfectly equipped for complex client-side development and server-side development, it is cross-platform and works on Windows, Mac OS X, and Linux. WebStorm features advanced support for JavaScri...

Example: <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title></title> </head> <body> <textarea id="content"></textarea> <input type="button" id="copy...