Documentation.

docs/examples/blind-auction.rst

@@ -25,7 +25,7 @@ to receive their money - contracts cannot activate themselves.
 ::
 
     // SPDX-License-Identifier: GPL-3.0
-    pragma solidity >=0.5.0 <0.8.0;
+    pragma solidity >0.6.99 <0.8.0;
 
     contract SimpleAuction {
         // Parameters of the auction. Times are either
@@ -60,7 +60,7 @@ to receive their money - contracts cannot activate themselves.
         constructor(
             uint _biddingTime,
             address payable _beneficiary
-        ) public {
+        ) {
             beneficiary = _beneficiary;
             auctionEndTime = block.timestamp + _biddingTime;
         }
@@ -186,7 +186,7 @@ invalid bids.
 ::
 
     // SPDX-License-Identifier: GPL-3.0
-    pragma solidity >=0.5.0 <0.8.0;
+    pragma solidity >0.6.99 <0.8.0;
 
     contract BlindAuction {
         struct Bid {
@@ -220,7 +220,7 @@ invalid bids.
             uint _biddingTime,
             uint _revealTime,
             address payable _beneficiary
-        ) public {
+        ) {
             beneficiary = _beneficiary;
             biddingEnd = block.timestamp + _biddingTime;
             revealEnd = biddingEnd + _revealTime;

docs/examples/micropayment.rst

@@ -143,14 +143,14 @@ The full contract
 ::
 
     // SPDX-License-Identifier: GPL-3.0
-    pragma solidity >=0.4.24 <0.8.0;
+    pragma solidity >0.6.99 <0.8.0;
 
     contract ReceiverPays {
         address owner = msg.sender;
 
         mapping(uint256 => bool) usedNonces;
 
-        constructor() public payable {}
+        constructor() payable {}
 
         function claimPayment(uint256 amount, uint256 nonce, bytes memory signature) public {
             require(!usedNonces[nonce]);
@@ -340,7 +340,7 @@ The full contract
 ::
 
     // SPDX-License-Identifier: GPL-3.0
-    pragma solidity >=0.5.0 <0.8.0;
+    pragma solidity >0.6.99 <0.8.0;
 
     contract SimplePaymentChannel {
         address payable public sender;      // The account sending payments.
@@ -348,7 +348,6 @@ The full contract
         uint256 public expiration;  // Timeout in case the recipient never closes.
 
         constructor (address payable _recipient, uint256 duration)
-            public
             payable
         {
             sender = msg.sender;

docs/examples/safe-remote.rst

@@ -26,7 +26,7 @@ you can use state machine-like constructs inside a contract.
 ::
 
     // SPDX-License-Identifier: GPL-3.0
-    pragma solidity >=0.5.0 <0.8.0;
+    pragma solidity >0.6.99 <0.8.0;
 
     contract Purchase {
         uint public value;
@@ -74,7 +74,7 @@ you can use state machine-like constructs inside a contract.
         // Ensure that `msg.value` is an even number.
         // Division will truncate if it is an odd number.
         // Check via multiplication that it wasn't an odd number.
-        constructor() public payable {
+        constructor() payable {
             seller = msg.sender;
             value = msg.value / 2;
             require((2 * value) == msg.value, "Value has to be even.");

docs/examples/voting.rst

@@ -33,7 +33,7 @@ of votes.
 ::
 
     // SPDX-License-Identifier: GPL-3.0
-    pragma solidity >=0.4.22 <0.8.0;
+    pragma solidity >0.6.99 <0.8.0;
 
     /// @title Voting with delegation.
     contract Ballot {
@@ -63,7 +63,7 @@ of votes.
         Proposal[] public proposals;
 
         /// Create a new ballot to choose one of `proposalNames`.
-        constructor(bytes32[] memory proposalNames) public {
+        constructor(bytes32[] memory proposalNames) {
             chairperson = msg.sender;
             voters[chairperson].weight = 1;