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@ -81,12 +81,12 @@ contract AcmeBank {
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// Now let's go through the basics of Solidity
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// 1. DATA TYPES AND ASSOCIATED METHOD
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// 1. DATA TYPES AND ASSOCIATED METHODS
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// uint is the data type typically used for currency (there are no doubles
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// or floats) and for dates
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uint x;
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// with 'constant', the compiler replaces each occurence with the acutal value
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// int of 256 bits, cannot be changed after instantiation
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int constant a = 8;
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@ -133,6 +133,7 @@ var a = true;
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uint x = 5;
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delete(x); // x is now 0
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// 2. DATA STRUCTURES
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// Arrays
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bytes32[5] nicknames; // static array
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@ -181,6 +182,7 @@ state = State.Created;
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// 'memory' does not persist, 'storage' does
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// Default is 'storage' for local and state variables; 'memory' for function parameters
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// 3. Variables of note
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// ** this **
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this; // the address of the current contract
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@ -209,6 +211,7 @@ block.gasLimit();
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// ** storage - A persistent storage hash (does not need to be declared) **
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storage['abc'] = 'def'; // maps 256 bit words to 256 bit words
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// 4. FUNCTIONS AND MORE
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// A. Functions
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// Simple function
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@ -290,6 +293,7 @@ function changeOwner(newOwner)
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owner = newOwner;
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}
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// 5. BRANCHING AND LOOPS
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// All basic logic blocks work - including if/else, for, while, break, continue, return
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@ -298,6 +302,7 @@ function changeOwner(newOwner)
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// Syntax is the same as javascript, but there is no type conversion from
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// non-boolean to boolean, so comparison operators must be used to get the boolean value
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// 6. OBJECTS/CONTRACTS
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// A. Calling an external contract
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@ -350,6 +355,7 @@ import "github.com/ethereum/dapp-bin/library/iterable_mapping.sol";
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// Importing is under active development and will change
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// Importing cannot currently be done at the command line
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// 7. CONTRACT DESIGN PATTERNS
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// A. Obfuscation
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@ -383,6 +389,8 @@ function remove() {
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// compilation may better handle this, but for now there are benefits to
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// planning your data structures)
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// *** EXAMPLE: Let's do a more complex example ***
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// ** START EXAMPLE **
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@ -400,7 +408,7 @@ function remove() {
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// ]
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// *** END EXAMPLE ***
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// Some final points
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// 7. NATIVE FUNCTIONS
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// Currency units
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@ -427,6 +435,7 @@ sha3("ab", "cd");
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ripemd160("abc");
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sha256("def");
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// 8. COMMON MISTAKES/MISCONCEPTIONS
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// A few common mistakes and misconceptions:
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@ -441,6 +450,7 @@ sha256("def");
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// TODO
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// 9. STYLE NOTES
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// Use 4 spaces for indentation
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// (Python's PEP8 is used as the baseline style guide, including its general philosophy)
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