Tutorial by Examples: f

In this tutorial , I will explain how to integrate Google's BigQuery API with web application. My web application is going to get the data using BigQuery and plot a graph using d3.js and Javascript. Each project on Google Developers Console has a clientID and you need to copy the clientID and put i...

Analog pins can be used to read voltages which is useful for battery monitoring or interfacing with analog devices. By default the AREF pin will be the same as the operating voltage of the arduino, but can be set to other values externally. If the voltage to read is larger than the input voltage, a ...

The libc crate is 'feature gated' and can only be accessed on nightly Rust versions until it is considered stable. #![feature(libc)] extern crate libc; use libc::pid_t; #[link(name = "c")] extern { fn getpid() -> pid_t; } fn main() { let x = unsafe { getpid() }; ...

Pure functions are self-contained, and have no side effects. Given the same set of inputs, a pure function will always return the same output value. The following function is pure: function pure(data) { return data.total + 3; } However, this function is not pure as it modifies an externa...

In the versions of YII Framework Version 1. You will set your main.php File. File Path : application_name/protected/config/main.php <?php return array( // Set Application Name 'name' => "Applicaiton Name", // Set Default Controller 'defaultC...

A named pipe is really just a special kind of file (a FIFO file) on the local hard drive. Unlike a regular file, a FIFO file does not contain any user information. Instead, it allows two or more processes to communicate with each other by reading/writing to/from this file. A named pipe works much...

Being able to understand Error/Exit codes is a fundamental skill for developers on Window's machine. Yet for many, the cryptic hexadecimal code that can be produced on an application exiting with on error can prove to be time consuming and painstaking process for the developer to track down and isol...

Pass a method into a directive. It provides a way to execute an expression in the context of the parent scope. Method will be executed in the scope of the parent, you may pass some parameters from the child scope there. You should not use {{...}} for interpolation. When you use & in a directi...

create() write() search() browse() exists() ref() ensure_one()

Let's say you have an academic system. The bounded contexts would be like this: Admission of new undergraduate students Distribution of students on classrooms considering a schedule of the courses and occupation, size and type of classrooms Management of courses, hierarchies and predecessors of...

The invoice number is used to verify the sale for publishers. Many publishers of paid asset or plugin ask for the invoice number upon request of support. The invoice number is also used as a license key to activate some asset or plugin. The invoice number can be found in two place: After you b...

if a directory contain 2 files: $ ls makefile example.txt and makefile contain the following text %.gz: % gzip $< then you can obtain example.txt.gz by typing in the shell $ make -f makefile example.txt.gz the makefile consist of only one rule that instruct make how to create a...

The following utility can be used for auto-completion of commands: $ which aws_completer /usr/bin/aws_completer $ complete -C '/usr/bin/aws_completer' aws For future shell sessions, consider add this to your ~/.bashrc $ echo "complete -C '/usr/bin/aws_completer' aws" >> ~/.b...

Main features of this Makefile : Automatic detection of C sources in specified folders Multiple source folders Multiple corresponding target folders for object and dependency files Automatic rule generation for each target folder Creation of target folders when they don't exist Dependency ma...

Consider you want to predict the correct answer for XOR popular problem. You Knew what is XOR(e.g [x0 x1] => y). for example [0 0] => 0, [0 1] => [1] and... #Load Sickit learn data from sklearn.neighbors import KNeighborsClassifier #X is feature vectors, and y is correct label(To train...

This example shows more detailed build settings: env=Environment( CPPPATH='/usr/include/boost/', CPPDEFINES=['foo'], LIBS=['bar'], SCONS_CXX_STANDARD='c++11') env.Program('hello', Glob('src/*.cpp')) This builds the executable hello from all the cpp files in src, with the f...

In this example, we rewrite url's of the form http://example.com/topic/id-seoname to a php script that takes an id as input. This example expects the rule to be in "per-directory" context. RewriteEngine on RewriteRule ^topic/([0-9]+)-[^/]*/?$ /topics.php?id=$1 [L] In this example, t...

You can use extensions for reference View, no more boilerplate after you created the views. Original Idea is by Anko Library Extensions inline fun <reified T : View> View.find(id: Int): T = findViewById(id) as T inline fun <reified T : View> Activity.find(id: Int): T = findViewById(i...

Display a live video feed taken from a webcam using OpenCV's VideoCapture class with Java, C/C++ and Python. Java import org.opencv.core.Core; import org.opencv.core.Mat; import org.opencv.videoio.VideoCapture; public class Camera { public static void main(String[] args) { // L...

Numpy provides a cross function for computing vector cross products. The cross product of vectors [1, 0, 0] and [0, 1, 0] is [0, 0, 1]. Numpy tells us: >>> a = np.array([1, 0, 0]) >>> b = np.array([0, 1, 0]) >>> np.cross(a, b) array([0, 0, 1]) as expected. While cr...