Tutorial by Examples: d

The following function reads an entire file into a new string and returns it: (defun read-file (infile) (with-open-file (instream infile :direction :input :if-does-not-exist nil) (when instream (let ((string (make-string (file-length instream)))) (read-sequence string instr...

Class Car ... ' Parameterless Constructor Public Sub Class_Initialize() distances_ = Array(0) End Sub ' Default initialization method that can be invoked without ' explicitly using the method name. Public Default Function Init(wheels) wheels_ = ...

To download NetBeans IDE just visit the NetBeans site and download the proper version of the IDE based on your OS, Architecture and technologies. You can select from the following technologies: Java SE. Supports all standard Java SE development features as well as support for NetBeans Platform ...

This example renders justified text. It adds extra functionality to the CanvasRenderingContext2D by extending its prototype or as a global object justifiedText (optional see Note A). Example rendering. Code to render this image is in the usage examples at the bottom. The Example The functi...

Renders text as justified paragraphs. REQUIRES the example Justified text Example render Top paragraph has setting.compact = true and bottom false and line spacing is 1.2 rather than the default 1.5. Rendered by code usage example bottom of this example. Example code // Requires justified...

Setup An Electron project structure usually looks like this: hello-world-app/ ├── package.json ├── index.js └── index.html Now let's create the files and initialize our package.json. $ mkdir hello-world-app && cd hello-world-app $ touch index.js $ touch index.html $ npm init N...

These two properties work in a similar fashion as the overflow property and accept the same values. The overflow-x parameter works only on the x or left-to-right axis. The overflow-y works on the y or top-to-bottom axis. HTML <div id="div-x"> If this div is too small to displa...

To get started: Install celery pip install celery configure celery (head to the remarks section) from __future__ import absolute_import, unicode_literals from celery.decorators import task @task def add_number(x, y): return x + y You can run this asynchronously by using the ....

This is how the author sets their personal PS1 variable: gitPS1(){ gitps1=$(git branch 2>/dev/null | grep '*') gitps1="${gitps1:+ (${gitps1/#\* /})}" echo "$gitps1" } #Please use the below function if you are a mac user gitPS1ForMac(){ git branch 2> ...

class ImageCreationExample { static Image createSampleImage() { // instantiate a new BufferedImage (subclass of Image) instance BufferedImage img = new BufferedImage(640, 480, BufferedImage.TYPE_INT_ARGB); //draw something on the image paintOnI...

public static void saveImage(String destination) throws IOException { // method implemented in "Creating a simple image Programmatically and displaying it" example BufferedImage img = createSampleImage(); // ImageIO provides several write methods with different outputs ...

static void setupQualityHigh(Graphics2D g2d) { g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); g2d.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY); // many other RenderingHints KEY/VALUE pairs to specify } ...

getfunc() { declare -f "$@" } function func(){ echo "I am a sample function" } funcd="$(getfunc func)" getfunc func # or echo "$funcd" Output: func () { echo "I am a sample function" }

Create a simple DataFrame. import numpy as np import pandas as pd # Set the seed so that the numbers can be reproduced. np.random.seed(0) df = pd.DataFrame(np.random.randn(5, 3), columns=list('ABC')) # Another way to set column names is "columns=['column_1_name','column_2_name','c...

To download a file from remote server to the local machine - type: scp tom@server2:$HOME/file.txt /local/machine/path/ This example shows how to download the file named file.txt from user tom's home directory to our local machine's current directory.

ps -e | less ps -e shows all the processes, its output is connected to the input of more via |, less paginates the results.

~$ ping -c 1 google.com # unmodified output PING google.com (16.58.209.174) 56(84) bytes of data. 64 bytes from wk-in-f100.1e100.net (16.58.209.174): icmp_seq=1 ttl=53 time=47.4 ms ~$ ping google.com | grep -o '^[0-9]\+[^()]\+' # modified output 64 bytes from wk-in-f100.1e100.net 64 bytes from...

String types like UnicodeString, AnsiString, WideString and UTF8String are stored in a memory using their respective encoding (see String Types for more details). Assigning one type of string into another may result in a conversion. Type string is designed to be encoding independent - you should nev...

.intel_syntax noprefix .data .align 16 hello_msg: .asciz "Hello, World!" .text .global _main _main: push rbp mov rbp, rsp lea rdi, [rip+hello_msg] call _puts xor rax, rax leave ret Assemble: clang main.s -o hello ./hello Not...

$sku = 'some-sku'; $productId = Mage::getModel('catalog/product')->getIdBySku($sku); if($productId){ //sku exists }