Tutorial by Examples: comp

Differnce between codes compiled with O0 and O3

I wrote a simple C code foo.c int main() { int i = 0; int j = 0; for (i = 0; i < 5; i++) { j = i + 1; } return 0; } When compiled with -O0 i.e. by disabling all compiler optimizations $ gcc -o foo.S foo.c -O0 -S I got this: .file "foo.c&...

gcc • GCC Optimizations

within the docker-compose itself

app: ... environment: - var=value

docker-compose • Environment variables external file

Using CSS3 with compass

You can find a complete reference which CSS3 components are supported on this page In order to use CSS3 in your project Compass provides mixins to support CSS3 features in every browser. On top of your Sass/Scss file you have to specify that you want to use compass @import "compass/css3"...

sass • Compass CSS3 Mixins

Request compres but prefer gzip

Request:"http://example.com" GET / HTTP/1.1 Host: example.com User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:53.0) Gecko/20100101 Firefox/53.0 Accept: text/html,application/xml;q=0.9,*/*;q=0.8 Accept-Encoding: gzip;q=1.0, compress;q=0.5 Accept-Language: en-US,en;q=0.5 Accept-E...

http-headers • Accept-Encoding: (Request)

Complete working example

add_action('rest_api_init', 'my_rest_validate_endpoint' ); function my_rest_validate_endpoint() { // Declare our namespace $namespace = 'myrest/v1'; // Register the route // Example URL matching this route: // http://yourdomain/wp-json/myrest/v1/guides/tag=europe/price=...

WordPress • REST API

Making a cURL request with passing some complex structure

When using cURL for some queries to the Docker API, it might be a bit tricky to pass some complex structures. Let's say, getting a list of images allows using filters as a query parameter, which have to be a JSON representation of map[string][]string (about the maps in Go you can find more here). H...

Docker • Docker Engine API

Improvements: Path compression

If we do many merge operations on a union-find data structure, the paths represented by the parent pointers might be quite long. Path compression, as already described in the theory part, is a simple way of mitigating this issue. We might try to do path compression on the whole data structure after...

data-structures • Union-find data structure

OpenCV code to read Images and compare

#include <opencv2/opencv.hpp> #include using namespace cv; using namespace std; int main(int argc, char** argv) { Mat image; image = imread("C:\Users\Development\Documents\Visual Studio 2013\Projects\ImageIn.bmp", CV_LOAD_IMAGE_GRAYSCALE); // Read the file if (!image.data)...

boost • BOOST- Compare Images using OpevCV

Compare two objects with reflection

public class Equatable { public string field1; public override bool Equals(object obj) { if (ReferenceEquals(null, obj)) return false; if (ReferenceEquals(this, obj)) return true; var type = obj.GetType(); if (GetType() != type) re...

.NET Framework • Reflection

Compiling with Code::Blocks (Graphical interface)

Download and install Code::Blocks here. If you're on Windows, be careful to select a file for which the name contains mingw, the other files don't install any compiler. Open Code::Blocks and click on "Create a new project": Select "Console application" and click &...

C++ • Compiling and Building

Scaffold skeleton project with `composer` and @akrabats `Slim-Skeleton`

Depending on whether you have installed composer globally or locally. Locally: php composer.phar create-project slim/slim-skeleton {my-app-name} Globally: composer create-project slim/slim-skeleton {my-app-name} If you are running a webserver (ex. Apache or nginx) point your virtualho...

slim • Getting started with slim

Detailed individual component base graphical test coverage reporting

if you want to see component's individual coverage of tests follow these steps. npm install --save-dev karma-teamcity-reporter Add `require('karma-teamcity-reporter')` to list of plugins in karma.conf.js ng test --code-coverage --reporters=teamcity,coverage-istanbul note that l...

Angular 2 • angular-cli test coverage

HTML example using requireJS CDN to include an already compiled TypeScript file.

<body onload="__init();"> ... <script src="http://requirejs.org/docs/release/2.3.2/comments/require.js"></script> <script> function __init() { require(["view/index.js"]); } </script> </body>...

TypeScript • Using Typescript with RequireJS

tsconfig.json example to compile to view folder using requireJS import style.

{ "module": "amd", // Using AMD module code generator which works with requireJS "rootDir": "./src", // Change this to your source folder "outDir": "./view", ... }

TypeScript • Using Typescript with RequireJS

Computing the Hamming weight of a vector

-- loop-based version function hw_loop(v: std_logic_vector) return natural is variable h: natural; begin h := 0; for i in v'range loop if v(i) = '1' then h := h + 1; end if; end loop; return h; end function hw_loop; -- recursive version function hw_tree(v: std_...

vhdl • Recursivity

GKEntity and GKComponent

An entity represents an object of a game like a player figure or an enemy figure. Since this object does not do much without arms and legs we can add the components to this. To create this system apple has the GKEntity and GKComponent classes. Lets assume we have the following classe for the follow...

iOS • GameplayKit

Visual Studio 2017 Editions Comparison

Visual Studio Community 2017 Free, fully-featured IDE for students, open-source and individual developer Visual Studio Professional 2017 Professional developer tools, services, and subscription benefits for small teams Visual Studio Enterprise 2017 End-to-end solution to meet demand...

visual-studio-2017 • Getting started with visual-studio-2017

Sending data from parent component to child via shared service

service.ts: import { Injectable } from '@angular/core'; @Injectable() export class AppState { public mylist = []; } parent.component.ts: import {Component} from '@angular/core'; import { AppState } from './shared.service'; @Component({ selector: 'parent-example', templ...

Angular • Sharing data among components

Send data from parent component to child component via data binding using @Input

parent.component.ts: import {Component} from '@angular/core'; @Component({ selector: 'parent-example', templateUrl: 'parent.component.html', }) export class ParentComponent { mylistFromParent = []; add() { this.mylistFromParent.push({"itemName":"Something&...

Angular • Sharing data among components

A simple component

To create a component we add @Component decorator in a class passing some parameters: providers: Resources that will be injected into the component constructor selector: The query selector that will find the element in the HTML and replace by the component styles: Inline styles. NOTE: DO NOT us...

Angular 2 • Components