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How to use referrerpolicy Attribute value ( no-referrer-when-downgrade ) with < iframe > tag in HTML ? with example

How to use referrerpolicy Attribute value ( no-referrer-when-downgrade ) with < iframe > tag in HTML ? with example Referrerpolicy Attribute value ( no-referrer-when-downgrade )    in iframe Default. The referrer header will not be sent to origins without HTTPS. Example <html> <body> <h1>The iframe referrerpolicy attribute Example</h1> <iframe src="https://www.tech.thinkforu.org/"   referrerpolicy="  no-referrer-when-downgrade  "> </iframe> </body> </html>
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Smart contract code for Anyone can send coins to each other without a need for registering with a username and password with help of Ethereum keypair

Smart contract code for Anyone can send coins to each other without a need for registering with a username and password with help of Ethereum keypair The contract allows only its creator to create new coins (different issuance schemes are possible). Anyone can send coins to each other without a need for registering with a username and password, all you need is an Ethereum keypair.  // SPDX-License-Identifier: GPL-3.0 pragma solidity ^0.8.4; contract Coin {     // The keyword "public" makes variables     // accessible from other contracts     address public minter;     mapping (address => uint) public balances;     // Events allow clients to react to specific     // contract changes you declare     event Sent(address from, address to, uint amount);     // Constructor code is only run when the contract     // is created     constructor() {         minter = msg.se...
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Tag is used to create inline frame ?

 Tag is used to create inline frame ? The <iframe> creates an inline frame, which embeds an  independent HTML document into the current document. <html> <iframe width="720" height="420"  src="https://www.thinkforu.org"  frameborder="0" allowfullscreen> </iframe> </html>
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Difference between Public vs Internal vs Private state variables in solidity programming langauge with example ?

 Difference between Public vs Internal vs Private state variables in solidity programming langauge with example ? Public state variables can be accessed internally as well as via messages. For a public state variable, an automatic getter function is generated.  Internal state variables can be accessed only internally from the current contract or contract deriving from it without using this.  Private state variables can be accessed only internally from the current contract they are defined not in the derived contract from it. Example of   Public vs Internal vs Private state variables pragma solidity ^0.5.0; contract C {    uint public data = 30;    uint internal iData= 10;        function x() public returns (uint) {       data = 3; // internal access       return data;    } } contract Caller {    C c = new C();    function f() public view returns (uint) {  ...
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How to use Local Variable for whose values are present till function is executing in solidity ?

  How to use Local Variable for whose values are present till function is executing in solidity ? pragma solidity ^0.5.0; contract SolidityTest {    uint storedData; // State variable    constructor() public  {       storedData = 10;       }    function getResult() public view returns(uint) {       uint a = 1; // local variable       uint b = 2;       uint result = a + b;       return result; //access the local variable    } }
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Syntax of writing a different font style in HTML

Syntax of writing a different font style in HTML   <!DOCTYPE html> <html> <head> <style>  p.normal {   font-style: normal; } p.italic {   font-style: italic; } p.oblique {   font-style: oblique; } p.bold { font-style: bold; } p.arial { font-style: arial; } p.c ourier { font-style:  Courier; } p.helvetica { font-style: helvetica; } p.times { font-style:times; } p.trebuchet { font-style: trebuchet; } p.v erdana { font-style:verdana; } </style> </head> <body> <h1>The font-style property</h1> <p class="bold">This sentence is in bold  style .</p> <p class="normal">This sentence is in normal style.</p> <p class="italic"> This sentence is   in italic style.</p> <p class="oblique"> This sentence is  in oblique style.</p> <p class="Arial "> This sentence is  in  Arial   style .</p> <p class=" Courier "> This sente...
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