Tutorial by Examples: char

char16_t

C++11 An unsigned integer type with the same size and alignment as uint_least16_t, which is therefore large enough to hold a UTF-16 code unit. const char16_t message[] = u"你好，世界\n"; // Chinese for "hello, world\n" std::cout << sizeof(message)/sizeof(char16_t) ...

C++ • Basic Type Keywords

char32_t

C++11 An unsigned integer type with the same size and alignment as uint_least32_t, which is therefore large enough to hold a UTF-32 code unit. const char32_t full_house[] = U"🂣🂳🂨🂸🃈"; // non-BMP characters std::cout << sizeof(full_house)/sizeof(char32_t) <<...

C++ • Basic Type Keywords

Common Special Characters

Some character may be reserved for HTML and cannot be used directly as it may obstruct the actual HTML codes. For example, trying to display the left and right angle brackets (<>) in the source code may cause unexpected results in the output. Similarly, white spaces as written in the source co...

HTML • Character Entities

Character Strings

char varchar text

Microsoft SQL Server • Data Types

Unicode Character Strings

nchar nvarchar ntext

Microsoft SQL Server • Data Types

Understanding C++ string characteristics

#include <iostream> #include <string> int main() { const char * C_String = "This is a line of text w"; const char * C_Problem_String = "This is a line of text ኚ"; std::string Std_String("This is a second line of text w"); std::string...

C++ • Internationalization in C++

A password containing at least 1 uppercase, 1 lowercase, 1 digit, 1 special character and have a length of at least of 10

As the characters/digits can be anywhere within the string, we require lookaheads. Lookaheads are of zero width meaning they do not consume any string. In simple words the position of checking resets to the original position after each condition of lookahead is met. Assumption :- Considering non-wo...

Regular Expressions • Password validation regex

wchar_t

An integer type large enough to represent all characters of the largest supported extended character set, also known as the wide-character set. (It is not portable to make the assumption that wchar_t uses any particular encoding, such as UTF-16.) It is normally used when you need to store character...

C++ • Basic Type Keywords

Character code

The method charCodeAt retrieves the Unicode character code of a single character: var charCode = "µ".charCodeAt(); // The character code of the letter µ is 181 To get the character code of a character in a string, the 0-based position of the character is passed as a parameter to charCo...

JavaScript • Strings

CHAR_LENGTH()

Return the number of characters in the string Syntax: CHAR_LENGTH(str) CHAR_LENGTH('foobar') -- 6 CHAR_LENGTH('fööbar') -- 6 -- contrast with LENGTH(...) = 8

MySQL • String operations

Creating a chart

The chart consists out of HTML container and the JavaScript code that instantiates a chart in it. HTML We use a <div> element as chart container. <div id="chartdiv" style="height: 300px;"></div> JavaScript To instantiate the chart we use AmCharts.makeChar...

amcharts • Getting started with amcharts

Entering special characters in strings and regular expressions

Most printable characters can be included in string or regular expression literals just as they are, e.g. var str = "ポケモン"; // a valid string var regExp = /[Α-Ωα-ω]/; // matches any Greek letter without diacritics In order to add arbitrary characters to a string or regular expression,...

JavaScript • Escape Sequences

Pie Chart with Demo

<!doctype html> <html> <head> <style> body{ background-color:white; } #canvas{border:1px solid red; } </style> <script> window.onload=(function(){ var canvas = document.getElementById("canvas"); var ctx = canvas.getContext(&...

html5-canvas • Charts & Diagrams

Character evaluation

a Character evaluates to true if it's value is not zero, false if zero assert ! new Character((char)0) assert ! new Character('\u0000Hello Zero Char'.charAt(0)) assert new Character('Hello'.charAt(0))

groovy • Groovy Truth (true-ness)

Simple D3 Chart: Hello World!

Paste this code into an empty HTML file and run it in your browser. <!DOCTYPE html> <body> <script src="https://d3js.org/d3.v4.js"></script>  <script> //This code will visualize a data set as a simple scatt...

d3.js • Getting started with d3.js

Adding Character Counting

The TextInputLayout has a character counter for an EditText defined within it. The counter will be rendered below the EditText. Just use the setCounterEnabled() and setCounterMaxLength methods: TextInputLayout til = (TextInputLayout) findViewById(R.id.username); til.setCounterEnabled(true); til...

Android • TextInputLayout

D3.js chart with Angular v1

HTML: <div ng-app="myApp" ng-controller="Controller"> <some-chart data="data"></some-chart> </div> Javascript: angular.module('myApp', []) .directive('someChart', function() { return { restrict: 'E', scope: {dat...

d3.js • Using D3 with other frameworks

Special characters

When used inside a double-quoted string, the escape character (backtick `) reperesents a special character. `0 #Null `a #Alert/Beep `b #Backspace `f #Form feed (used for printer output) `n #New line `r #Carriage return `t #Horizontal tab `v #Vertical tab (used for pri...

PowerShell • Strings

D) You can attach a running containers volume to another containers

[root@localhost ~]# docker run -it --volumes-from vol3 8251da35e7a7 /bin/bash root@ef2f5cc545be:/# ls bin boot data dev etc home lib lib64 media mnt opt proc root run sbin srv sys tmp usr var root@ef2f5cc545be:/# ls /data abc1 abc10 abc2 abc3 abc4 abc5 abc6 abc7...

Docker • Concept of Docker Volumes

First character upper case rest lower case literals

Attribute Image capitalizes all characters of enumeration literals. The function Case_Rule_For_Names applies upper case for the first character and makes the rest lower case. with Ada.Text_IO; use Ada.Text_IO; with Ada.Strings.Maps.Constants; use Ada.Strings.Maps.Constants; with Ada.Strings.Fixed...

ada • Enumeration